Lenovo ThinkSystem SR645 ServerProduct Guide

The Lenovo ThinkSystem SR645 is a 2-socket 1U server that features the AMD EPYC 7002 "Rome" family of processors. With up to 64 cores per processor and support for the new PCIe 4.0 standard for I/O, the SR645 offers the ultimate in two-socket server performance in a space-saving 1U form factor. The server is ideal for dense workloads that can take advantage of GPU processing and high-performance NVMe drives.

Suggested uses: HPC, database, virtualization, and VDI

Figure 1. Lenovo ThinkSystem SR645

The SR645 server offers onboard NVMe PCIe ports that allow direct connections to 12x NVMe SSDs, which frees up PCIe slots and helps lower NVMe solution acquisition costs.

The server has been designed to take advantage of the features of the EPYC 7002 "Rome" processors, such as the full performance of 280W 64-core processors, support for 3200 MHz memory and PCIe Gen 4.0 support. Competitive servers that are based on the older EPYC 7001 "Naples" designs may not be able to offer these performance features.

Combining performance and flexibility, the SR645 server is a great choice for enterprises of all sizes. The server offers a broad selection of drive and slot configurations and offers high performance features that industries such as finance, healthcare and telco need. Outstanding reliability, availability, and serviceability (RAS) and high-efficiency design can improve your business environment and can help save operational costs.

Scalability and performance

The SR645 offers numerous features to boost performance, improve scalability and reduce costs: 

• Supports the AMD EPYC 7002 family of processors
• Supports processors with up to 64 cores and 128 threads, core speeds of up to 3.7 GHz, and TDP ratings of up to 280W.
• Support for up to 32 TruDDR4 memory DIMMs with two processors (16 DIMMs per processor). Each processor has 8 memory channels and 2 DIMMs per channel. With 1 DIMM installed per channel (8 DIMMs total), memory operates at 3200 MHz. Using Performance+ RDIMMs, the server supports 2 DIMMs per channel (16 DIMMs total) operating at 3200 MHz.
• Using 128GB 3DS RDIMMs, the server supports up to 4TB of system memory.
• Supports up to three single-width GPUs, each up to 75W for substantial processing power in a 1U system.
• Supports up to 12x 2.5-inch hot-swap drive bays, by using combinations of front-accessible (up to 10 bays) and rear-accessible (2 bays).
• Supports four 3.5-inch drive bays for lower-cost high-capacity HDD storage. 2.5-inch and 3.5-inch drive bays can be mixed if desired.
• Supports 12x NVMe drives without oversubscription of PCIe lanes (1:1 connectivity) and without the need for additional NVMe adapters. The use of NVMe drives maximizes drive I/O performance, in terms of throughput, bandwidth, and latency.
• Supports 12x SATA drives using the onboard SATA controller (no additional adapter needed), enabling lower cost, high capacity storage solution for cold storage workloads.
• Supports 12x SAS drives using a variety of support RAID controllers or SAS HBAs.
• Supports high-speed RAID controllers from Broadcom providing 12 Gb SAS connectivity to the drive backplanes. A variety of PCIe 3.0 and PCIe 4.0 RAID adapters are available.
• Supports up to two externally accessible 7mm hot-swap drives with RAID functionality for operating system boot functions or data storage
• Supports M.2 drives for convenient operating system boot functions or data storage. Available M.2 adapters support either one M.2 drive or two M.2 drives in a RAID 1 configuration for performance and reliability.
• The server has a dedicated industry-standard OCP 3.0 small form factor (SFF) slot, with a PCIe 4.0 x16 interface, supporting a variety of Ethernet network adapters. Simple-swap mechanism with thumbscrews and pull-tab enables tool-less installation and removal of the adapter. Supports shared BMC network sideband connectivity to enable out-of-band systems management.
• The server offers PCI Express 4.0 I/O expansion capabilities that doubles the theoretical maximum bandwidth of PCIe 3.0 (16GT/s in each direction for PCIe 4.0, compared to 8 GT/s with PCIe 3.0). A PCIe 4.0 x16 slot provides 64 GB/s bandwidth, enough to support a 400GbE network connection.
• Up to three PCIe 4.0 slots, all with rear access, plus an internal bay for a cabled RAID adapter or HBA, plus a slot dedicated to the OCP adapter.

Availability and serviceability

The SR645 provides many features to simplify serviceability and increase system uptime:

• The server uses ECC memory and supports memory RAS features including Single Device Data Correction (SDDC, also known as Chipkill), Patrol/Demand Scrubbing, DRAM Address Command Parity with Replay, and DRAM Uncorrected ECC Error Retry.
• The server offers hot-swap drives, supporting RAID redundancy for data protection and greater system uptime.
• Available M.2 RAID Boot Adapters support RAID-1 which can enable two SATA or two NVMe M.2 drives to be configured as a redundant pair.
• The server has up to two hot-swap redundant power supplies and up to eight hot-swap redundant fans to provide availability for business-critical applications.
• The power-source-independent light path diagnostics uses LEDs to lead the technician to failed (or failing) components, which simplifies servicing, speeds up problem resolution, and helps improve system availability.
• Solid-state drives (SSDs) offer more reliability than traditional mechanical HDDs for greater uptime.
• Proactive Platform Alerts (including PFA and SMART alerts): Processors, voltage regulators, memory, internal storage (SAS/SATA HDDs and SSDs, NVMe SSDs, M.2 storage, flash storage adapters), fans, power supplies, RAID controllers, server ambient and subcomponent temperatures. Alerts can be surfaced through the XClarity Controller to managers such as Lenovo XClarity Administrator, VMware vCenter, and Microsoft System Center. These proactive alerts let you take appropriate actions in advance of possible failure, thereby increasing server uptime and application availability.
• The built-in XClarity Controller continuously monitors system parameters, triggers alerts, and performs recovery actions in case of failures to minimize downtime.
• Built-in diagnostics in UEFI, using Lenovo XClarity Provisioning Manager, speed up troubleshooting tasks to reduce service time.
• Lenovo XClarity Provisioning Manager supports diagnostics and can save service data to a USB key drive or remote CIFS share folder for troubleshooting and reduce service time.
• Auto restart in the event of a momentary loss of AC power (based on power policy setting in the XClarity Controller service processor)
• Offers a diagnostics port on the front of the server to allow you to attach an external diagnostics handset for enhanced systems management capabilities.
• Support for the XClarity Administrator Mobile app running on a supported smartphone and connected to the server through the service-enabled USB port, enables additional local systems management functions.
• Three-year or one-year customer-replaceable unit and onsite limited warranty, 9 x 5 next business day. Optional service upgrades are available.

Manageability and security

Systems management features simplify local and remote management of the SR645:

• The server includes an XClarity Controller (XCC) to monitor server availability. Optional upgrade to XCC Advanced to provide remote control (keyboard video mouse) functions. Optional upgrade to XCC Enterprise enables the additional support for the mounting of remote media files (ISO and IMG image files), boot capture, and power capping.
• Lenovo XClarity Administrator offers comprehensive hardware management tools that help to increase uptime, reduce costs and improve productivity through advanced server management capabilities.
• UEFI-based Lenovo XClarity Provisioning Manager, accessible from F1 during boot, provides system inventory information, graphical UEFI Setup, platform update function, RAID Setup wizard, operating system installation function, and diagnostic functions.
• Support for Lenovo XClarity Energy Manager which captures real-time power and temperature data from the server and provides automated controls to lower energy costs.
• An integrated industry-standard Unified Extensible Firmware Interface (UEFI) enables improved setup, configuration, and updates, and simplifies error handling.
• Support for industry standard management protocols, IPMI 2.0, SNMP 3.0, Redfish REST API, serial console via IPMI
• An integrated hardware Trusted Platform Module (TPM) supporting TPM 2.0 enables advanced cryptographic functionality, such as digital signatures and remote attestation.
• Administrator and power-on passwords help protect from unauthorized access to the server.
• Supports AMD Secure Root-of-Trust, Secure Run and Secure Move features to minimize potential attacks and protect data as the OS is booted, as applications are run and as applications are migrated from server to server.
• Supports Secure Boot to ensure only a digitally signed operating system can be used.
• Industry-standard Advanced Encryption Standard (AES) NI support for faster, stronger encryption.
• Additional physical security features are a chassis intrusion switch (standard in all models) and a lockable front bezel (optional).

Energy efficiency

The SR645 offers the following energy-efficiency features to save energy, reduce operational costs, and increase energy availability:

• Energy-efficient planar components help lower operational costs.
• High-efficiency power supplies with 80 PLUS Platinum and Titanium certifications
• Low-voltage 1.2 V DDR4 memory offers energy savings compared to 1.35 V and 1.5 V DDR3 DIMMs.
• Solid-state drives (SSDs) consume as much as 80% less power than traditional spinning 2.5-inch HDDs.
• The server uses hexagonal ventilation holes, which can be grouped more densely than round holes, providing more efficient airflow through the system and thus keeping your system cooler.
• Optional Lenovo XClarity Energy Manager provides advanced data center power notification and analysis to help achieve lower heat output and reduced cooling needs.

The following figure shows the architectural block diagram of the SR645, showing the major components and their connections.

Figure 5. SR645 system architectural block diagram

The following table lists the standard specifications.

ThinkSystem SR645 models can be configured by using the Lenovo Data Center Solution Configurator (DCSC).

Configure-to-order (CTO) models are used to create models with factory-integrated server customizations. For CTO models, two base CTO models are available for the SR645 as listed in the following table, CTO1WW and CTOLWW:

• The CTO1WW base CTO model is for general business and is selectable by choosing General Purpose mode in DCSC.
• The CTOLWW base model is intended for High Performance Computing (HPC) and Artificial Intelligence (AI) configurations and solutions, including configurations for Lenovo Scalable Infrastructure (LeSI), and is enabled using either the HPC & AI LeSI Solutions mode or HPC & AI ThinkSystem Hardware mode in DCSC. CTOLWW configurations can also be built using System x and Cluster Solutions Configurator (x-config).

Preconfigured server models may also be available for the SR645, however these are region-specific; that is, each region may define their own server models, and not all server models are available in every region.

The following table lists the base CTO models of the ThinkSystem SR645 server.

Models of the SR645 are defined based on whether the server has 2.5-inch drive bays at the front (called the 10x 2.5" chassis or simply the 2.5-inch chassis) or whether it has 3.5-inch drive bays at the front (called the 3.5-inch chassis). For models, the feature codes for these chassis bases are as listed in the following table.

The following tables list the available models, grouped by region.

• Models for Australia and New Zealand
• Models for South East Asian countries (ASEAN)
• Models for EMEA countries
• Models for Hong Kong, Taiwan, Korea (HTK)
• Models for India
• Models for Japan
• Models for Latin American countries (except Brazil)
• Models for USA and Canada

Refer to the Specifications section for information about standard features of the server.

The SR645 supports processors in the second-generation AMD EPYC family of processors. The server supports one or two processors.

Topics in this section:

• Processor options
• One-processor configurations
• Thermal restrictions based on processor

Processor options

The table below lists the AMD processors that are currently supported.

All supported processors have the following characteristics:

• Second-generation AMD EPYC processors (formerly codenamed "Rome")
• 7 nm process technology
• Eight DDR4 memory channels
• 128 PCIe 4.0 I/O lanes, 64 lanes available for PCIe and NVMe devices

The following table lists the features of the supported processors.

† The maximum single-core frequency at with the processor is capable of operating
* This processor supports 8 memory channels at 3200 MHz, however performance is optimized for 4 channels at 2666 MHz
** Processors with a P suffix are single-socket capable processors

The server uses Lenovo TruDDR4 memory operating at up to 3200 MHz. The processors have 8 memory channels and support 2 DIMMs per channel, for a total of 16 DIMMs. The server supports up to 4TB of memory using 32x 128GB 3DS RDIMMs and two processors.

The server supports memory speeds up to 3200 MHz, based on the memory type and the number of DIMMs installed per channel, as listed in the following table.

The following table lists the memory options that are available for the server.

Lenovo TruDDR4 memory uses the highest quality components that are sourced from Tier 1 DRAM suppliers and only memory that meets the strict requirements of Lenovo is selected. It is compatibility tested and tuned to maximize performance and reliability. From a service and support standpoint, Lenovo TruDDR4 memory automatically assumes the system warranty, and Lenovo provides service and support worldwide.

The following rules apply when selecting the memory configuration:

• The server supports RDIMMs and 3DS-RDIMMs.
• Mixing of RDIMMs and 3DS-RDIMMs is not supported.
• Mixing of Performance+ and non-Performance+ DIMMs is not supported
• Mixing x4 and x8 DIMMs is supported, but not in the same channel
• Mixing of DIMM rank counts is supported. Follow the required installation order installing the DIMMs with the higher rank counts first.
• Mixing of DIMM capacities is supported, however only two different capacities are supported across all channels of the processor (eg 32GB and 64GB). Follow the required installation order installing the larger DIMMs first.
• Memory mirroring and memory rank sparing are not supported.

The SR645 supports 4x 3.5-inch or 12x 2.5-inch drive bays or a combination of drive bays, depending on the selected chassis and backplane configuration. The server also supports configurations without any drive bays if desired.

All drives are hot-swap and are accessible from the front or from the rear.

The server also supports one or two M.2 drives, installed in an M.2 adapter.

In this section:

• NVMe drive support
• Front drive bays
• Rear drive bays
• Supported drive bay combinations
• Controller selections
• Field upgrades
• RAID flash power module (supercap) support
• M.2 drives
• 7mm drives

NVMe drive support

The SR645 supports NVMe drives to maximize storage performance:

• In 2.5-inch front drive configurations, the server supports up to 12 NVMe drives without oversubscription (that is, each x4 drive has a full x4 connection (4 lanes) to the processor), 10 drives at the front and 2 drives at the rear.
• In 3.5-inch front drive configurations, two 2.5-inch NVMe drives are supported at the rear of the server.

The specifics of these configurations are covered in the Supported drive bay combinations and Controller selections sections.

In addition, the SR645 supports two 7mm NVMe drives for use as boot drives. These two drives are connected via separate RAID controller connected to a single PCIe 3.0 x2 host interface. See the 7mm drives section for details.

Front drive bays

The front drive bay zone supports the following configurations:

• 3.5-inch drive bays
  • No backplane and no drives (supports field upgrades)
  • 4x 3.5-inch SAS/SATA
  • 4x 3.5-inch AnyBay
• 2.5-inch drive bays
  • No backplane and no drives (supports field upgrades)
  • 4x 2.5-inch hot-swap SAS/SATA
  • 8x 2.5-inch hot-swap SAS/SATA
  • 6x 2.5-inch hot-swap SAS/SATA + 4x hot-swap AnyBay
  • 6x 2.5-inch hot-swap SAS/SATA + 4x hot-swap NVMe
  • 6x 2.5-inch hot-swap SAS/SATA + 2x hot-swap AnyBay + 2x hot-swap NVMe
  • 10x 2.5-inch hot-swap AnyBay
  • 10x 2.5-inch hot-swap NVMe
  • 8x 2.5-inch hot-swap NVMe + 2x hot-swap NVMe

These configurations are shown in the following figure. The feature codes listed correspond to the feature codes listed in the table below the figure.

Figure 6. SR645 front drive bay configurations

The backplanes used to provide these drive bays are listed in the following table.

The backplanes used to provide these drive bays are listed in the following table.

* Backplanes are available as part numbers for field upgrades using upgrade kits, as described in the Field upgrades section below.

The use of rear drive bays has the following configuration rules:

• With 2.5-inch rear drive bays, only slot 1 is available. Slot 2 and 3 are not available
• With 7mm rear drive bays, slots 1 and 2 are available and slot 2 is a low profile slot. Slot 3 is not available.
• 7mm drive enclosure is connected to onboard NVMe port and cannot be connected to any installed RAID adapter or HBA
• GPUs are not supported

Controller selections

This section helps you determine with storage adapter are supported for your desired drive bay configuration.

In the tables, the controllers are grouped as follows:

• RAID 8i corresponds to any of the following:
  • ThinkSystem RAID 530-8i PCIe 12Gb Adapter
  • ThinkSystem RAID 930-8i 2GB Flash PCIe 12Gb Adapter
  • ThinkSystem RAID 940-8i 4GB Flash PCIe Gen4 12Gb Adapter
  • ThinkSystem RAID 940-8i 8GB Flash PCIe Gen4 12Gb Adapter
• RAID 16i corresponds to any of the following:
  • ThinkSystem RAID 530-16i PCIe 12Gb Adapter
  • ThinkSystem RAID 930-16i 4GB Flash PCIe 12Gb Adapter
  • ThinkSystem RAID 940-16i 8GB Flash PCIe Gen4 12Gb Adapter
• RAID 16i Int corresponds to the following:
  • ThinkSystem RAID 940-16i 8GB Flash PCIe Gen4 12Gb Internal Adapter
• HBA 8i corresponds to the following:
  • ThinkSystem 430-8i SAS/SATA 12Gb HBA
• HBA 16i corresponds to the following:
  • ThinkSystem 430-16i SAS/SATA 12Gb HBA
• HBA 16i Int corresponds to the following:
  • ThinkSystem 440-16i SAS/SATA PCIe Gen4 12Gb Internal HBA
• OB SATA (onboard SATA) corresponds to the following in CTO orders:
  • Onboard SATA AHCI Mode, feature AVUX
• OB NVMe (onboard NVMe) corresponds to the following in CTO orders:
  • Non RAID NVMe, feature BC4V

* No support if using RAID 940-16i Internal or HBA 440-16i Internal
** No support if using Onboard SATA

The following table lists the cables included in each front drive bay cable kit.

When adding drive bays, you will also need to add the appropriate storage controller(s). Consult the tables in the Controller selections section to determine what controller sections are supported and what additional controllers you will need. Controllers are described in the Controllers for internal storage section.

RAID flash power module (supercap) support

If you plan to add one of the RAID adapters that includes a RAID flash power module (supercap) as a field upgrade, then you will also need to order a Supercap installation kit for the power module. For CTO orders, the components in the installation kit are automatically derived when you select the RAID adapter. The adapters that this applies to are as follows:

• ThinkSystem RAID 930-8i 2GB Flash PCIe 12Gb Adapter
• ThinkSystem RAID 930-16i 4GB Flash PCIe 12Gb Adapter
• ThinkSystem RAID 940-8i 4GB Flash PCIe Gen4 12Gb Adapter
• ThinkSystem RAID 940-8i 8GB Flash PCIe Gen4 12Gb Adapter
• ThinkSystem RAID 940-16i 8GB Flash PCIe Gen4 12Gb Adapter
• ThinkSystem RAID 940-16i 8GB Flash PCIe Gen4 12Gb Internal Adapter

There are up to three possible locations for supercaps, depending on the front drive bays (2.5-inch or 3.5-inch) and the size of the processor heatsinks. Details are summarized in the following table. Location references are shown in the figure below.

The locations where supercaps are installed is shown in the following figure.

Figure 8. Location of the supercaps in the SR645

When adding a RAID adapter and supercap as a field upgrade, order the supercap installation kit list listed in the following table.

Supported drives are listed in the Internal drive options section.

For further details about M.2 components, see the ThinkSystem M.2 Drives and M.2 Adapters product guide:
https://lenovopress.com/lp0769-thinksystem-m2-drives-adapters

The following table lists the ordering information for the 7mm drive bays.

Each drive bay kit supports 1 or 2 drives and includes an integrated controller providing RAID functions.

The ThinkSystem 1U 7mm Drive Kit w/ SATA RAID has the following features:

• Supports 1 or 2 SATA hot-swap drives; drives are 7mm high and 2.5-inches wide
• Integrated controller based on the Marvell 88SE9230 SATA RAID Controller
• PCIe 2.0 x2 host interface to the server system board
• Provides 6 Gbps SATA connectivity to the drives
• Supports JBOD, RAID-0 and RAID-1
• Management and configuration support via UEFI and OS-based tools
• Supports monitoring and reporting of events and temperature through I2C
• Firmware update via Lenovo firmware update tools

The ThinkSystem 1U 7mm Drive Kit w/ NVMe RAID has the following features:

• Supports 1 or 2 NVMe hot-swap drives; drives are 7mm high and 2.5-inches wide
• Integrated controller based on the Marvell 88NR2241 NVMe RAID Controller
• PCIe 3.0 x2 host interface to the server system board
• Provides PCIe 3.0 x1 connectivity to each drive
• Supports RAID-0 and RAID-1 (JBOD is not supported)
• Management and configuration support via UEFI and OS-based tools
• Supports monitoring and reporting of events and temperature through I2C
• Firmware update via Lenovo firmware update tools

The following figure shows the ThinkSystem 1U 7mm Drive Kit w/ NVMe RAID.

Figure 10. ThinkSystem 1U 7mm Drive Kit w/ NVMe RAID

The SR645 offers a variety of controller options for internal drives:

• For 2.5-inch and 3.5-inch drives:
  • Onboard SATA ports (feature AVUX)
  • Onboard NVMe ports (feature BC4V)
  • RAID adapters and HBAs for SAS/SATA drives (PCIe slot-based)
  • RAID adapters and HBAs for SAS/SATA drives (cabled in a dedicated space)
• For 7mm drive bays in the rear of the server (see the 7mm drives section)
  • SATA controller integrated into the 7mm drive bay enclosure
  • NVMe controller integrated into the 7mm drive bay enclosure
• For M.2 drives internal to the server (see M.2 drives section)
  • SATA controller integrated on the M.2 SATA 2-Bay RAID Enablement Kit
  • NVMe controller integrated on the M.2 NVMe 2-Bay RAID Enablement Kit

As well as supporting RAID adapters and HBAs that install in a PCIe slot, the SR645 with 2.5-inch front drive bays supports a custom adapter that is mounted in the server and cabled to one of the onboard NVMe ports. The HBA 440-16i Internal Adapter and RAID 940-16i Internal Adapter are installed in a mount between the front 2.5-inch drive bays and the system fans, as shown in the following figure. The Internal Adapters are not supported with 3.5-inch front drives due to a lack of physical space.

Figure 11. ThinkSystem RAID 940-16i Internal Adapter (front drive backplane removed to show the adapter)

The following table lists the adapters used for the internal storage of the server.

* Only supported with 2.5-inch front drive bays. Not supported in configurations with 3.5-inch front drive bays.

Configuration notes:

• Supercap support limits the number of RAID adapters installable: The table lists whether the adapter includes a power module (supercap) to power the flash memory. The server supports between 1 and 3 supercaps depending on the server configuration as described in the RAID flash power module (supercap) support section. The number of supercaps supported also determines the maximum number of RAID adapters with flash that can be installed in the server.
• Field upgrades: If you are adding a RAID adapter with supercap to the server as a field upgrade, you may need a supercap holder as described in the RAID flash power module (supercap) support section.
• 7mm drive support: The storage adapters listed in the table below do not provide connectivity to the 7mm drive bays that are optionally available at the rear of the server. The 7mm drives have their own independent RAID controller. See the 7mm drives section for details.
• RAID 530-8i firmware: If you plan to use the RAID 530-8i in the server, it must have firmware 50.3.0-1032 or later applied before it can be used in the server. If the adapter you plan to use has older firmware (for example, you are using an adapter you previously purchased), it must first be upgrade by installing it in another server and upgrading the firmware there. For more information, see Support tip HT509177.

The onboard SATA controller has the following features:

• Controller integrated into the AMD processor
• JBOD only; no RAID support
• Supports up to 12 SATA drives in the SR645
• Supports HDDs and SSDs; can be mixed

For specifications about the RAID adapters and HBAs supported by the SR645, see the ThinkSystem RAID Adapter and HBA Reference, available from:
https://lenovopress.com/lp1288-lenovo-thinksystem-raid-adapter-and-hba-reference#sr645-support=SR645

For more information about each of the adapters, see the product guides in the RAID adapters or HBA sections of the Lenovo Press web site:
https://lenovopress.com/servers/options/raid
https://lenovopress.com/servers/options/hba

The following tables list the hard disk drive and solid-state drive options for the internal disk storage of the server.

The server does not supports any internal backup units, such as tape drives or RDX drives. External backup units are available as described in the External backup units section.

The server supports the external USB optical drive listed in the following table.

The drive is based on the Lenovo Slim DVD Burner DB65 drive and supports the following formats: DVD-RAM, DVD-RW, DVD+RW, DVD+R, DVD-R, DVD-ROM, CD-RW, CD-R, CD-ROM.

The server supports a total of up to 3 PCIe 4.0 slots, all with rear access, plus a dedicated OCP 3.0 SFF slot for networking. Slot availability is based on riser selection. The use of slot 3 requires that both processors be installed.

• Slot 1: PCIe 4.0 x16 LP (CPU 1)
• Slot 2: PCIe 4.0 x16 LP or FHHL (CPU 1)
• Slot 3: PCIe 4.0 x16 LP (CPU 2)

Slots 1 and 2 are also available as PCIe 3.0 adapter slots, using a lower-cost PCIe 3.0 riser, if desired.

The following figure shows the locations of the rear-accessible slots for each configuration selection. The OCP slot in located in the lower-left corner.

Figure 12. SR645 slot configurations

The slots and riser cards are as follows:

• Riser 1: Slots 1 & 2
  • Slot 1: Low Profile, PCIe 4.0 x16
  • Slot 2: Low Profile or FHHL, PCIe 4.0 x16 (not available in configuration C in the above figure)
• Riser 2: Slot 3 (requires CPU 2)
  • Slot 3: Low Profile, PCIe 4.0 x16 (only available in configuration A)

The riser cards and slot brackets used to provide the above slot combinations in configure-to-order (CTO) configurations are listed in the following table.

Field upgrades

Slot configurations can also be ordered as field upgrades using option part numbers, as listed in the following table.

The server has a dedicated OCP 3.0 SFF slot with PCIe 4.0 x16 host interface. See Figure 3 for the location of the OCP slot.

The following table lists the supported OCP adapters. One port can optionally be shared with the XCC management processor for Wake-on-LAN and NC-SI support. Only 1 OCP card can be installed in the server.

* The maximum ambient temperature supported is 35°C

For more information, including the transceivers and cables that each adapter supports, see the list of Lenovo Press Product Guides in the Networking adapters category:
https://lenovopress.com/servers/options/ethernet

The following table lists additional supported network adapters that can be installed in the regular PCIe slots.

* See ConnectX-6 thermal requirements below

The following thermal requirement apply to ConnectX-6 adapters:

• The high performance cooling fans must be installed. See the Cooling section for details.
• The use of high-TDP processors may not be supported, depending on the configuration. See the Thermal restrictions by processor section for details.
• The maximum ambient temperature supported is 35°C. If the adapter uses 100Gb Active Optical Cables (AOCs), the maximum ambient temperature supported is reduced to 30°C.

For more information, including the transceivers and cables that each adapter supports, see the list of Lenovo Press Product Guides in the Networking adapters category:
https://lenovopress.com/servers/options/ethernet

The following table lists the Fibre Channel HBAs supported by the SR645.

For more information, see the list of Lenovo Press Product Guides in the Host bus adapters category:
https://lenovopress.com/servers/options/hba

The following table lists SAS HBAs and RAID adapters supported by SR645 server for use with external storage.

Configuration rules

The RAID 930-8e uses a flash power module (supercap), which can be installed in one of the locations as shown in the following figure.

Figure 13. Potential locations of all supercaps in the SR645 (2.5-inch drive configuration and standard heatsinks)

The number of 930-8e RAID adapters supported is based on how many supercaps can be installed in the server. The number and location of the supercaps is determined based on the front drive configuration used and which processor heatsinks are installed, as listed in the following table.

Note: If an internal 930i RAID adapter with flash power modules is installed, the maximum number of 930-8e adapters supported is reduced by 1.

For more information, see the list of Lenovo Press Product Guides in the Host bus adapters and RAID adapters categories:
https://lenovopress.com/servers/options/hba
https://lenovopress.com/servers/options/raid

The following table compares the specifications of the external SAS HBAs and RAID adapters.

* SAS HBAs support SEDs (self-encrypting drives) by using software on the server and simply passing SED commands through the HBA to the drives. SED support by RAID controllers is provided using the built-in MegaRAID SafeStore functionality of the adapter.

The SR645 supports the PCIe Flash Storage adapters listed in the following table.

For details about these adapters, see the Lenovo Press product guides in the Flash Adapters category:
https://lenovopress.com/servers/options/ssdadapter

Configuration rules

The following configuration requirements must be met when installing flash storage adapters:

• GPU adapters are not supported
• Performance fans are required and will be derived by the configurator for configure-to-order builds.
• When adding Flash adapters as field upgrades, you will be required to replace all standard fans with performance fan modules. See the Cooling section for ordering information.

The SR645 supports the following graphics processing units (GPUs).

* See configuration rules below

For information about these GPUs, see the ThinkSystem GPU Summary, available at:
https://lenovopress.com/lp0768-thinksystem-thinkagile-gpu-summary

Configuration rules

The following configuration requirements must be met when installing GPUs:

• All GPUs installed must be identical
• Rear drive bays bays are not supported
• With 225W processors:
  • 2 GPUs maximum (slot 1 and 3)
• With 280W processors:
  • 2 GPUs maximum (slot 1 and 3)
  • Only 4x 2.5-inch SAS/SATA front drive configuration supported
• Flash storage adapters are not supported.
• Maximum ambient temperature is 30°C
• Performance fans are required and will be derived by the configurator for configure-to-order builds.
• When adding GPUs as field upgrades, you will be required to replace all Standard fans with Performance fans. See the Cooling section for ordering information.

The SR645 server has up to eight 40 mm dual-rotor hot-swap fans. Six fans are needed when one processor is installed and eight fans are required when two processors are installed. The server offers N+2 redundancy. The server also has one additional fan integrated in each of the two power supplies.

Depending on the configuration, the server will need either Standard fans (21K RPM) or Performance fans (24K RPM)

Under the following conditions, Standard fans can be used:

• Processor with 120W TDP, and the following requirements:
  • No GPUs
  • No InfiniBand CX-6 adapters
  • No rear drives (2.5-inch or 7mm)
• Processor TDP ≤ 170W, and the following requirements:
  • No GPUs
  • No InfiniBand CX-6 adapters
  • No rear drives (2.5-inch or 7mm)
  • 4x 2.5-inch front drive backplane or 8x 2.5-inch front drive backplane

If any conditions are not met, Performance fans are required.

Ordering information for the fans is listed in the following table.

The SR645 supports up to two redundant hot-swap power supplies.

The power supply choices are listed in the following table. Both power supplies used in server must be identical.

Dual-voltage power supplies are auto-sensing and support both 110V AC (100-127V 50/60 Hz) and 220V AC (200-240V 50/60 Hz) power. For China customers, all power supplies support 240V DC.

All supported AC power supplies have a C14 connector. The -48V DC power supply has a Weidmuller TOP 4GS/3 7.6 terminal as shown in the following figure.

Figure 14. ThinkSystem 1100W -48V DC v2 Power Supply

Power supply options do not include a line cord. For server configurations, the inclusion of a power cord is model dependent. Configure-to-order models can be configured without power cords if desired.

For the -48V DC Power Supply, the following power cable is supported.

The server contains an integrated service processor, XClarity Controller (XCC), which provides advanced control, monitoring, and alerting functions. The XCC is based on the Pilot4 XE401 baseboard management controller (BMC) using a dual-core ARM Cortex A9 service processor.

• Local management
• System status with XClarity Mobile
• Remote management
• Lenovo XClarity Provisioning Manager
• Lenovo XClarity Administrator
• Lenovo XClarity Essentials
• Lenovo XClarity Energy Manager
• Lenovo Capacity Planner

Configuration rules for the Pull-out operator panel:

• Only supported with configurations with 8x 2.5-inch drive bays
• Not available as a field upgrade. The component is CTO or on pre-configured models only

Figure 17. External Diagnostics Handset

Ordering information for the External Diagnostics Handset with is listed in the following table.

The front of the server also houses an information pull-out tab (also known as the network access tag). See Figure 2 for the location. A label on the tab shows the network information (MAC address and other data) to remotely access the service processor.

The steps to connect the mobile device are as follows:

1. Enable USB Management on the server, by holding down the ID button for 3 seconds (or pressing the dedicated USB management button if one is present)
2. Connect the mobile device via a USB cable to the server's USB port with the management symbol
3. In iOS or Android settings, enable Personal Hotspot or USB Tethering
4. Launch the Lenovo XClarity Mobile app

Remote management

The server offers a dedicated RJ45 port at the rear of the server for remote management via the XClarity Controller management processor. The port supports 10/100/1000 Mbps speeds.

Remote server management is provided through industry-standard interfaces:

• Intelligent Platform Management Interface (IPMI) Version 2.0
• Simple Network Management Protocol (SNMP) Version 3 (no SET commands; no SNMP v1)
• Common Information Model (CIM-XML)
• Representational State Transfer (REST) support
• Redfish support (DMTF compliant)
• Web browser - HTML 5-based browser interface (Java and ActiveX not required) using a responsive design (content optimized for device being used - laptop, tablet, phone) with NLS support

IPMI via the Ethernet port (IPMI over LAN) is supported, however it is disabled by default. For CTO orders you can specify whether you want to the feature enabled or disabled in the factory, using the feature codes listed in the following table.

There are two XClarity Controller upgrades available for the server, Advanced and Enterprise.

Lenovo XClarity Controller Advanced adds the following remote control functions:

• Remotely viewing video with graphics resolutions up to 1600x1200 at 75 Hz with up to 23 bits per pixel, regardless of the system state
• Remotely accessing the server using the keyboard and mouse from a remote client
• Capturing blue-screen errors
• International keyboard mapping support
• LDAP-based authentication

Lenovo XClarity Controller Enterprise enables the following additional features:

• Boot Capture
• Remote mounting of CD-ROM (ISO) and diskette (IMG) files as virtual drives
• Virtual console collaboration - Ability for up to 6 remote users to be log into the remote session simultaneously
• Power capping
• License for XClarity Energy Manager

Because Lenovo XClarity Administrator does not require any agent software to be installed on the managed endpoints, there are no CPU cycles spent on agent execution, and no memory is used, which means that up to 1GB of RAM and 1 - 2% CPU usage is saved, compared to a typical managed system where an agent is required.

For more information about Lenovo XClarity Administrator, including ordering part numbers, see the Lenovo XClarity Administrator Product Guide: https://lenovopress.com/tips1200-lenovo-xclarity-administrator

For more information about all the available Lenovo XClarity Integrators, see the Lenovo XClarity Administrator Product Guide: https://lenovopress.com/tips1200-lenovo-xclarity-administrator

The SR645 server offers the following electronic security features:

• Secure Boot function of the AMD EPYC processor
• Firmware signature processes compliant with FIPS and NIST requirements
• Administrator and power-on password
• Integrated Trusted Platform Module (TPM) supporting TPM 2.0
• Optional Nationz TPM 2.0, available only in China (CTO only)

The server is NIST SP 800-147B compliant.

The SR645 server also offers the following physical security features:

• Chassis intrusion switch
• Optional lockable front security bezel

The optional lockable front security bezel is shown in the following figure and includes a key that enables you to secure the bezel over the drives and system controls thereby reducing the chance of unauthorized or accidental access to the server.

Figure 18. Lockable front security bezel

The dimensions of the security bezel are:

• Width: 437 mm (17.2 in.)
• Height: 43 mm (1.3 in.)
• Width: 23 mm (0.9 in.)

The following table lists the security options for the SR645.

* Not available as a field upgrade. The component is CTO or on pre-configured models only.

The following table lists the rack installation options that are available for the SR645.

The VGA Upgrade Kit allows you to upgrade your server by adding a VGA video port to the front of the server (if the server does not already come with a front VGA port). When the front VGA is in use, the rear VGA port is automatically disabled.

The following table summarizes the rail kit features and specifications.

* CMA mounting brackets are not preinstalled on the rail. The CMA mounting brackets are contained in the CMA option kit package and you will need to install the CMA mounting brackets first. For detailed instructions, refer to the documentation that comes with the CMA option kit.
** If you want to install the rails and a 0U PDU into the same rack, the rack must meet the height and depth requirements as described in ThinkSystem Rail Support Matrix.
‡ For best performance, it is recommended that you install the rails to the racks with a 719-mm distance (28.31-inch, Lenovo rack default distance) between the front and rear mounting flanges.
† Measured when mounted on the rack, from the front surface of the front mounting flange to the rear most point of the rail. Rail is in closed position.

The server supports the following operating systems:

• Microsoft Windows Server 2016
• Microsoft Windows Server 2019
• Red Hat Enterprise Linux 7.6
• Red Hat Enterprise Linux 7.7
• Red Hat Enterprise Linux 7.8
• Red Hat Enterprise Linux 8.1
• Red Hat Enterprise Linux 8.2
• SUSE Linux Enterprise Server 12 SP5
• SUSE Linux Enterprise Server 12 Xen SP5
• SUSE Linux Enterprise Server 15 SP1
• SUSE Linux Enterprise Server 15 SP2
• SUSE Linux Enterprise Server 15 Xen SP1
• SUSE Linux Enterprise Server 15 Xen SP2
• VMware ESXi 6.7 U3
• VMware ESXi 7.0
• VMware ESXi 7.0 U1

For a complete list of supported, certified and tested operating systems, plus additional details and links to relevant web sites, see the Operating System Interoperability Guide: https://lenovopress.com/osig#servers=sr645-7d2y-7d2x

For configure-to-order configurations, the server can be preloaded with VMware ESXi installed on M.2 cards. Ordering information is listed in the following table.

You can download supported VMware vSphere hypervisor images from the following web page and load it on the M.2 drives or 7mm drives using the instructions provided:
https://vmware.lenovo.com/content/custom_iso/

The SR645 has the following overall physical dimensions, excluding components that extend outside the standard chassis, such as EIA flanges, front security bezel (if any), and power supply handles:

• Width: 440 mm (17.3 inches)
• Height: 43 mm (1.7 inches)
• Depth: 773 mm (30.4 inches)

The following table lists the detailed dimensions. See the figure below for the definition of each dimension.

Figure 19. Server dimensions

The server has the following weight:

• Maximum weight: 20.2 kg (44.6 lb)

The server has the following electrical specifications for AC input power supplies:

• Input voltage:
  • 100 to 127 (nominal) Vac, 50 Hz or 60 Hz
  • 200 to 240 (nominal) Vac, 50 Hz or 60 Hz
  • 180 to 300 Vdc (China only)
• Inlet current:
  • 100-127 V:
    • 500W power supply: 5.7 A
    • 750W Platinum power supply: 8.4 A
    • 750W Titanium power supply: Not supported
    • 1100W power supply: 12 A*
    • 1800W power supply: Not supported
  • 200-240 V:
    • 500W power supply: 2.7 A
    • 750W Platinum power supply: 4.1 A
    • 750W Titanium power supply: 4.0 A
    • 1100W power supply: 6.0 A
    • 1800W power supply: 10 A

* In China, this power supply cannot exceed 10 A current.

Electrical specifications for DC input power supply:

• Input voltage: -48 to -60 Vdc
• Inlet current (1100W power supply): 26 A

The SR645 server complies with ASHRAE Class A2 specifications with most configurations, and depending on the hardware configuration, also complies with ASHRAE Class A3 and Class A4 specifications. System performance may be impacted when operating temperature is outside ASHRAE A2 specification.

The restrictions to ASHRAE A2 (10-35°C) support are as follows:

• The use of Mellanox ConnectX-6 adapters with Active Optical Cables (AOCs) requires the ambient temperature be no more than 30°C
• 3x GPUs + 10x 2.5-inch front drives + 180W or 200W TDP processors requires the ambient temperature be no more than 30°C
• 2x GPUs + 280W TDP Processors requires the ambient temperature be no more than  30°C
• Rear 2.5-inch drives + 8x 2.5-inch or 4x 3.5-inch front drives + 180W or 200W TDP processors requires the ambient temperature be no more than 30°C

To comply with ASHRAE A3 (5-40°C) and A4 (5-45°C) specifications, the server models must meet the following hardware configuration requirements:

• Processor TDP ≤ 170W
• No DIMMs of 128GB or larger capacity
• No NVMe drives
• No NVMe M.2 drives
• No rear drive bays
• No mid drive bays
• No PCIe flash storage adapters
• No OCP adapters of 10GbE or faster
• No Mellanox ConnectX-6 HDR and HDR100 adapters
• No GPUs

The server is supported in the following environment:

• Air temperature:
  • Operating:
    • ASHRAE Class A2: 10°C to 35°C (50°F to 95°F); the maximum ambient temperature decreases by 1°C for every 300 m (984 ft) increase in altitude above 900 m (2,953 ft).
    • ASHRAE Class A3: 5°C to 40°C (41°F to 104°F); the maximum ambient temperature decreases by 1°C for every 175 m (574 ft) increase in altitude above 900 m (2,953 ft).
    • ASHRAE Class A4: 5°C to 45°C (41°F to 113°F); the maximum ambient temperature decreases by 1°C for every 125 m (410 ft) increase in altitude above 900 m (2,953 ft).
  • Server off: 5°C to 45°C (41°F to 113°F)
  • Shipment/storage: -40°C to 60°C (-40°F to 140°F)
• Maximum altitude: 3,050 m (10,000 ft)
• Relative Humidity (non-condensing):
  • Operating
    • ASHRAE Class A2: 8% to 80%; maximum dew point: 21°C (70°F)
    • ASHRAE Class A3: 8% to 85%; maximum dew point: 24°C (75°F)
    • ASHRAE Class A4: 8% to 90%; maximum dew point: 24°C (75°F)
  • Shipment/storage: 8% to 90% 

The server has the following acoustic noise emissions declaration:

• Sound power level (L_WAd):
  • Idling: 6.0 Bel (Typical), 7.0 Bel (GPU rich), 7.5 Bel (Storage rich)
  • Operating: 6.5 Bel (Typical), 7.6 Bel (GPU rich), 7.5 Bel (Storage rich)
• Sound pressure level (L_pAm):
  • Idling: 43 dBA (Typical), 53 dBA (GPU rich), 59 dBA (Storage rich)
  • Operating: 49 dBA (Typical), 59 dBA (GPU rich), 59 dBA (Storage rich)

Notes:

• The sound levels were measured in controlled acoustical environments according to procedures specified by ISO7779 and are reported in accordance with ISO 9296.
• The declared acoustic sound levels are based on following configurations, which may change slightly depending on configuration/conditions, for example OCP cards such as the Broadcom 57454 and the Marvell 41132 adapters.
  • Typical: 2x 155W CPU, 32x 32GB RDIMM, 10x 2.5" HDD, RAID 930-8i, 10/25GbE SFP28 2-port OCP,  2x 750W PSU
  • GPU rich: 2x 155W CPU, 32x 64GB RDIMM, 10x 2.5" HDD, RAID 930-16i, 10/25GbE SFP28 2-port OCP, 2x T4 GPU, 2x 1100W PSU
  • Storage rich: 2x 155W CPU, 32x 64GB RDIMM, 12x 2.5" HDD, 930-16i RAID, 10/25GbE SFP28 2-port OCP, 2x 750W PSU

The SR645 has a 1-year or 3-year warranty based on the machine type of the system:

• 7D2Y - 1 year warranty
• 7D2X - 3 year warranty

The standard warranty terms are customer-replaceable unit (CRU) and onsite (for field-replaceable units FRUs only) with standard call center support during normal business hours and 9x5 Next Business Day Parts Delivered.

Lenovo’s additional support services provide a sophisticated, unified support structure for your data center, with an experience consistently ranked number one in customer satisfaction worldwide. Available offerings include:

• Premier Support

  Premier Support provides a Lenovo-owned customer experience and delivers direct access to technicians skilled in hardware, software, and advanced troubleshooting, in addition to the following:

  • Direct technician-to-technician access through a dedicated phone line
  • 24x7x365 remote support
  • Single point of contact service
  • End to end case management
  • Third-party collaborative software support
  • Online case tools and live chat support
  • On-demand remote system analysis
• Warranty Upgrade (Preconfigured Support)

  Services are available to meet the on-site response time targets that match the criticality of your systems.

  • 3, 4, or 5 years of service coverage
  • 1-year or 2-year post-warranty extensions
  • Foundation Service: 9x5 service coverage with next business day onsite response. YourDrive YourData is an optional extra (see below).
  • Essential Service: 24x7 service coverage with 4-hour onsite response or 24-hour committed repair (available only in select countries). Bundled with YourDrive YourData.
  • Advanced Service: 24x7 service coverage with 2-hour onsite response or 6-hour committed repair (available only in select countries). Bundled with YourDrive YourData.
• Managed Services

  Lenovo Managed Services provides continuous 24x7 remote monitoring (plus 24x7 call center availability) and proactive management of your data center using state-of-the-art tools, systems, and practices by a team of highly skilled and experienced Lenovo services professionals.

  Quarterly reviews check error logs, verify firmware & OS device driver levels, and software as needed. We’ll also maintain records of latest patches, critical updates, and firmware levels, to ensure you systems are providing business value through optimized performance.

• Technical Account Management (TAM)

  A Lenovo Technical Account Manager helps you optimize the operation of your data center based on a deep understanding of your business. You gain direct access to your Lenovo TAM, who serves as your single point of contact to expedite service requests, provide status updates, and furnish reports to track incidents over time. In addition, your TAM will help proactively make service recommendations and manage your service relationship with Lenovo to make certain your needs are met.

• Enterprise Server Software Support

  Enterprise Software Support is an additional support service providing customers with software support on Microsoft, Red Hat, SUSE, and VMware applications and systems. Around the clock availability for critical problems plus unlimited calls and incidents helps customers address challenges fast, without incremental costs. Support staff can answer troubleshooting and diagnostic questions, address product comparability and interoperability issues, isolate causes of problems, report defects to software vendors, and more.

• YourDrive YourData

  Lenovo’s YourDrive YourData is a multi-drive retention offering that ensures your data is always under your control, regardless of the number of drives that are installed in your Lenovo server. In the unlikely event of a drive failure, you retain possession of your drive while Lenovo replaces the failed drive part. Your data stays safely on your premises, in your hands. The YourDrive YourData service can be purchased in convenient bundles and is optional with Foundation Service. It is bundled with Essential Service and Advanced Service.

• Health Check

  Having a trusted partner who can perform regular and detailed health checks is central to maintaining efficiency and ensuring that your systems and business are always running at their best. Health Check supports Lenovo-branded server, storage, and networking devices, as well as select Lenovo-supported products from other vendors that are sold by Lenovo or a Lenovo-Authorized Reseller.

Examples of region-specific warranty terms are second or longer business day parts delivery or parts-only base warranty.

If warranty terms and conditions include onsite labor for repair or replacement of parts, Lenovo will dispatch a service technician to the customer site to perform the replacement. Onsite labor under base warranty is limited to labor for replacement of parts that have been determined to be field-replaceable units (FRUs). Parts that are determined to be customer-replaceable units (CRUs) do not include onsite labor under base warranty.

If warranty terms include parts-only base warranty, Lenovo is responsible for delivering only replacement parts that are under base warranty (including FRUs) that will be sent to a requested location for self-service. Parts-only service does not include a service technician being dispatched onsite. Parts must be changed at customer’s own cost and labor and defective parts must be returned following the instructions supplied with the spare parts.

Lenovo Services is a dedicated partner to your success. Our goal is to reduce your capital outlays, mitigate your IT risks, and accelerate your time to productivity.

Here’s a more in-depth look at what we can do for you:

• Asset Recovery Services

  Asset Recovery Services (ARS) helps customers recover the maximum value from their end-of-life equipment in a cost-effective and secure way. On top of simplifying the transition from old to new equipment, ARS mitigates environmental and data security risks associated with data center equipment disposal. Lenovo ARS is a cash-back solution for equipment based on its remaining market value, yielding maximum value from aging assets and lowering total cost of ownership for your customers. For more information, see the ARS page, https://lenovopress.com/lp1266-reduce-e-waste-and-grow-your-bottom-line-with-lenovo-ars.

• Assessment Services

  An Assessment helps solve your IT challenges through an onsite, multi-day session with a Lenovo technology expert. We perform a tools based assessment which provides a comprehensive and thorough review of a company's environment and technology systems. In addition to the technology based functional requirements, the consultant also discusses and records the non-functional business requirements, challenges, and constraints. Assessments help organizations like yours, no matter how large or small, get a better return on your IT investment and overcome challenges in the ever-changing technology landscape.

• Design Services

  Professional Services consultants perform infrastructure design and implementation planning to support your strategy. The high-level architectures provided by the assessment service are turned into low level designs and wiring diagrams, which are reviewed and approved prior to implementation The implementation plan will demonstrate an outcome-based proposal to provide business capabilities through infrastructure with a risk-mitigated project plan.

• Basic Hardware Installation

  Lenovo experts can seamlessly manage the physical installation of your server, storage, or networking hardware. Working at a time convenient for you (business hours or off shift), the technician will unpack and inspect the systems on your site, install options, mount in a rack cabinet, connect to power and network, check and update firmware to the latest levels, verify operation, and dispose of the packaging, allowing your team to focus on other priorities.

• Deployment Services

  When investing in new IT infrastructures, you need to ensure your business will see quick time to value with little to no disruption. Lenovo deployments are designed by development and engineering teams who know our Products & Solutions better than anyone else, and our technicians own the process from delivery to completion. Lenovo will conduct remote preparation and planning, configure & integrate systems, validate systems, verify and update appliance firmware, train on administrative tasks, and provide post-deployment documentation. Customer’s IT teams leverage our skills to enable IT staff to transform with higher level roles and tasks.

• Integration, Migration, and Expansion Services

  Move existing physical & virtual workloads easily, or determine technical requirements to support increased workloads while maximizing performance. Includes tuning, validation, and documenting ongoing run processes. Leverage migration assessment planning documents to perform necessary migrations.

Some service options may not be available in all countries. For more information, go to https://www.lenovo.com/systems/services. For information about Lenovo service upgrade offerings that are available in your region, contact your local Lenovo sales representative or business partner.

The server conforms to the following standards:

• Energy Star 3.0
• FCC: Verified to comply with Part 15 of the FCC Rules, Class A
• Canada ICES-003, issue 6, Class A
• UL/IEC 62368-1
• CAN/CSA-C22.2 No. 62368-1
• NOM-019
• Argentina IEC 62368-1
• Japan VCCI, Class A
• Australia/New Zealand AS/NZS CISPR 32, Class A; AS/NZS 60950.1
• IEC 60950-1 & IEC 62368-1 (CB Certificate and CB Test Report)
• China CCC (GB4943.1), GB9254 Class A, GB17625.1
• Taiwan BSMI CNS13438, Class A; CNS14336-1; section 5 of CNS15663
• Korea KN32, Class A; KN35
• Russia, Belorussia and Kazakhstan, EAC: TP TC 004/2011 (for Safety); TP TC 020/2011 (for EMC); TP EAC 037/2016 (for RoHS)
• CE Mark (EN55032 Class A, EN60950-1, EN62368-1, EN55024, EN55035, EN61000-3-2, (EU) 2019/424, EN 50581-1 and EN61000-3-3)
• CISPR 32, Class A
• TUV-GS (EN62368-1, EK1-ITB2000, AfPS GS 01 PAK Par. 3.1)
• India BIS certification

The server supports attachment to external drive enclosures using a RAID controller with external ports or a SAS host bus adapter. Adapters supported by the server are listed in the SAS adapters for external storage section.

Note: Information provided in this section is for ordering reference purposes only. For the operating system and adapter support details, refer to the interoperability matrix for a particular storage enclosure that can be found on the Lenovo Data Center Support web site:
http://datacentersupport.lenovo.com

For details about supported drives, adapters, and cables, see the following Lenovo Press Product Guides:

• Lenovo Storage D1212 and D1224
  http://lenovopress.com/lp0512
• Lenovo Storage D3284
  http://lenovopress.com/lp0513

Lenovo offers the ThinkSystem DE Series and ThinkSystem DM Series external storage systems for high-performance storage. See the DE Series and DM Series product guides for specific controller models, expansion enclosures and configuration options:

• ThinkSystem DE Series Storage
  https://lenovopress.com/storage/thinksystem/de-series#rt=product-guide
• ThinkSystem DM Series Storage
  https://lenovopress.com/storage/thinksystem/dm-series#rt=product-guide

The server supports both USB-attached RDX backup units and SAS-attached tape drives.

The following table lists the available external SAS tape backup options.

Tip: Verify the end-to-end support of an IBM tape backup solution through the IBM System Storage Interoperation Center (SSIC): http://www.ibm.com/systems/support/storage/ssic

For more information, see the list of Product Guides in the Backup units category:
https://lenovopress.com/servers/options/backup

The following table lists the external RDX backup options available.

For more information, see the Lenovo RDX USB 3.0 Disk Backup Solution product guide:
https://lenovopress.com/tips0894-rdx-usb-30

Lenovo offers the ThinkSystem DB Series of Fibre Channel SAN switches and directors for high-performance storage expansion. See the DB Series product guides for models and configuration options:

• ThinkSystem DB Series SAN Switches and Directors:
  https://lenovopress.com/storage/switches/rack#rt=product-guide

The following table lists the uninterruptible power supply (UPS) units that are offered by Lenovo.

† Only available in China and countries in the Asia Pacific region.

For more information, see the list of Product Guides in the UPS category:
https://lenovopress.com/servers/options/ups

The following table lists the power distribution units (PDUs) that are offered by Lenovo.

* Not available in USA and Canada

For more information, see the Lenovo Press documents in the PDU category:
https://lenovopress.com/servers/options/pdu

The following table lists the supported rack cabinets.

For specifications about these racks, see the Lenovo Rack Cabinet Reference, available from:
https://lenovopress.com/lp1287-lenovo-rack-cabinet-reference

For more information, see the list of Product Guides in the Rack cabinets category:
https://lenovopress.com/servers/options/racks

The following table lists the supported KVM consoles, keyboards, and KVM switches.

For more information, see the list of Product Guides in the KVM Switches and Consoles category:
http://lenovopress.com/servers/options/kvm

Lenovo Financial Services reinforces Lenovo’s commitment to deliver pioneering products and services that are recognized for their quality, excellence, and trustworthiness. Lenovo Financial Services offers financing solutions and services that complement your technology solution anywhere in the world.

We are dedicated to delivering a positive finance experience for customers like you who want to maximize your purchase power by obtaining the technology you need today, protect against technology obsolescence, and preserve your capital for other uses.

We work with businesses, non-profit organizations, governments and educational institutions to finance their entire technology solution. We focus on making it easy to do business with us. Our highly experienced team of finance professionals operates in a work culture that emphasizes the importance of providing outstanding customer service. Our systems, processes and flexible policies support our goal of providing customers with a positive experience.

We finance your entire solution. Unlike others, we allow you to bundle everything you need from hardware and software to service contracts, installation costs, training fees, and sales tax. If you decide weeks or months later to add to your solution, we can consolidate everything into a single invoice.

Our Premier Client services provide large accounts with special handling services to ensure these complex transactions are serviced properly. As a premier client, you have a dedicated finance specialist who manages your account through its life, from first invoice through asset return or purchase. This specialist develops an in-depth understanding of your invoice and payment requirements. For you, this dedication provides a high-quality, easy, and positive financing experience.

For your region specific offers please ask your Lenovo sales representative or your technology provider about the use of Lenovo Financial Services. For more information, see the following Lenovo website:

https://www.lenovo.com/us/en/landingpage/lenovo-financial-services/

For more information, see these resources:

• Lenovo ThinkSystem SR645 product page:
  https://www.lenovo.com/us/en/data-center/servers/racks/ThinkSystem-SR645-Server/p/77XX7SR352S
• Interactive 3D Tour of the ThinkSystem SR645:
  https://lenovopress.com/lp1290
• Lenovo Press video walk-through of the ThinkSystem SR645:
  https://lenovopress.com/lp1292
• ThinkSystem SR645 drivers and support
  http://datacentersupport.lenovo.com/products/servers/thinksystem/sr645/7d2x/downloads
• Lenovo Hardware Installation & Removal Videos on the SR645:
  • YouTube: https://www.youtube.com/playlist?list=PLYV5R7hVcs-DY1RaWHYM4xDloAwuBQHR0
  • Youku: https://list.youku.com/albumlist/show/id_52339628
• Lenovo ThinkSystem SR645 product publications:
  http://thinksystem.lenovofiles.com/help/index.jsp
  • Quick Start
  • Rack Installation Guide
  • Setup Guide
  • Hardware Maintenance Manual
  • Messages and Codes Reference
  • Memory Population Reference
• ServerProven hardware compatibility:
  http://www.lenovo.com/us/en/serverproven