Lenovo SR635 Rack Server

Lenovo SR635 Rack Server

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SKU: SR635

The Lenovo ThinkSystem SR635 is a 1-socket 1U server that features the AMD EPYC 7002 "Rome" and AMD EPYC 7003 "Milan" families of processors. With up to 64 cores per processor and support for the PCIe 4.0 standard for I/O,...

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The Lenovo ThinkSystem SR635 is a 1-socket 1U server that features the AMD EPYC 7002 "Rome" and AMD EPYC 7003 "Milan" families of processors. With up to 64 cores per processor and support for the PCIe 4.0 standard for I/O, the SR635 offers the ultimate single-socket server performance in a space-saving 1U form factor. With up to 128 PCIe lanes, the server is ideal for dense workloads that can take advantage of GPU processing and high-performance NVMe drives.

The SR635 has been designed to take advantage of the features of the EPYC 7002 and 7003 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.

Scalability and performance

  • Supports the AMD EPYC 7002 and EPYC 7003 families family of processors
  • Supports processors with up to 64 cores and 128 threads, core speeds of up to 4.1 GHz, and TDP ratings of up to 280W.
  • Support for up to 16 TruDDR4 memory DIMMs, with 8 memory channels and 2 DIMMs per channel. With 1 DIMM installed per channel (8 DIMMs total), memory operates at up to 3200 MHz. With 2 DIMMs per channel (16 DIMMs total), memory operates at up to 2933 MHz.
  • Using 128GB DIMMs, the server supports up to 2TB of system memory.
  • Supports up to three single-width GPUs, each up to 75W. A 3:1 ratio of GPUs to CPUs means substantial processing power is available with just one CPU.
  • Supports up to 16x 2.5-inch hot-swap drive bays, by using combinations of front-accessible (up to 10 bays), mid-accessible (4 bays), and rear-accessible (2 bays).
  • Supports four 3.5-inch drive bays for lower-cost high-capacity storage. 2.5-inch and 3.5-inch drive bays can be mixed in several combinations.
  • Supports 16x 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 RAID adapters are available, with cache and support for 16 drives on a single controller.
  • 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. A 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 double 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.
  • A total of up to four PCIe 4.0 slots (3 with rear access, 1 internal for a RAID adapter) plus a slot dedicated to the OCP adapter.

Availability and serviceability

  • 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.
  • The M.2 SATA RAID Boot Adapter supports RAID-1 which enables two installed M.2 drives to be configured as a redundant pair.
  • The server has up to two hot-swap redundant power supplies and seven 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.
  • The built-in ASPEED AST2500 baseboard management controller (BMC) continuously monitors system parameters, triggers alerts, and performs recovery actions in case of failures to minimize downtime.
  • Proactive Platform Alerts: Voltage regulators, memory, fans, power supplies, server ambient, and subcomponent temperatures. Alerts can be surfaced through the BMC to managers such as Lenovo XClarity Administrator. These proactive alerts let you take appropriate actions in advance of possible failure, thereby increasing server uptime and application availability.
  • Web-based ThinkSystem System Manager (TSM) provides remote access to the BMC for remote management.
  • Lenovo XClarity Provisioning Manager Lite (LXPM Lite) tool can be used to install an operating system on the server and perform system diagnostics.
  • 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

  • Supports Lenovo XClarity Provisioning Manager Lite (LXPM Lite) for system setup and firmware upgrades.
  • 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.
  • Support for Lenovo XClarity Energy Manager, which captures real-time power and temperature data from the server and integrates with Redfish-based applications to provide automated controls to lower energy costs.
  • 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.

Energy efficiency

  • 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.

Form Factor/Depth

1U / 778 mm (30.6 inches)

Processor

CChoice of one AMD EPYC™ 7002 Generation processor, up to 280W

Memory

16x DDR4 memory slots; Maximum 2TB using 128GB 3DS RDIMMs; Up to 1 DPC at 3200MHz, 2 DPC at 2933MHz

Drive Bays

Up to 4x 3.5” or 16x 2.5” drives; Supports 16x NVMe drives with 1:1 connection (no oversubscription)

RAID Support

Hardware RAID with flash cache; HBAs

Power Supply

Two hot-swap/redundant power supplies: 550W/750W/1100W AC 80 PLUS Platinum; or 750W AC 80 PLUS Titanium

Network Interface

OCP 3.0 mezz adapter, PCIe adapters

Slots

3x PCIe 4.0 x16 rear slots, 1x OCP 3.0 adapter slot, 1x PCIe x8 internal slot

Ports

Front: 2x USB 3.1 G1 ports, 1x VGA (optional)
Rear: 1x VGA, 2x USB 3.1 G1, 1x Serial port; 1x RJ-45 1Gb for dedicated management

Systems Management

ASPEED AST2500 BMC, Partial XClarity support

Operating Systems

Microsoft Windows Server, SUSE Linux Enterprise Server, Red Hat Enterprise Linux, VMware vSphere.


Part Code

SR635

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