Lenovo ThinkSystem SR550

Lenovo's value 2-socket 2U rack server (machine types 7X03/7X04) for 1st and 2nd Gen Intel Xeon Scalable processors up to 125 W, with 12 DIMM slots (up to 768 GB), up to 12 LFF or 16 SFF SAS/SATA drives and up to six PCIe 3.0 slots. Suits storage-heavy file, backup and general business workloads on a budget.

Memory

Slots: 12 DIMM (6 per processor; 6 channels per CPU, 1 DIMM per channel)
Types: TruDDR4 RDIMM (8/16/32/64 GB); 64 GB LRDIMM with 1st Gen CPUs only; RDIMMs and LRDIMMs cannot be mixed
Speed: Up to 2933 MHz with 2nd Gen CPUs, 2666 MHz with 1st Gen (lowest of DIMM and CPU speed)
Max: 768 GB (12 × 64 GB RDIMM with 2nd Gen, or 12 × 64 GB LRDIMM with 1st Gen); 384 GB with 32 GB RDIMMs on 1st Gen
Protection: ECC, SDDC (x4), ADDDC (x4, Gold/Platinum), mirroring, rank sparing, patrol/demand scrubbing

Storage

3.5" chassis: 8 × 3.5" SATA simple-swap, 8 × 3.5" SAS/SATA hot-swap, or 12 × 3.5" SAS/SATA hot-swap
2.5" chassis: 8 or 16 × 2.5" SAS/SATA hot-swap (one or two 8-bay backplanes)
NVMe: Not listed; SAS/SATA only
Controllers: Onboard SATA (C622 PCH) AHCI or Intel RSTe software RAID for simple-swap bays; 12 Gb RAID 530/540/5350/730/930/9350/940 adapters (up to two 8i or one 16i, up to 8 GB flash cache); 430/440 HBAs
M.2 boot: One M.2 connector: Single M.2 Boot Adapter (1 SATA drive) or Dual M.2 Boot Adapter (2 drives, RAID-1 by default)
Optical: None internal; external USB DVD RW option

Graphics

Onboard: Matrox G200 (16 MB) in the XClarity Controller, max 1920×1200 at 60 Hz, 32 bpp
GPU adapters: None listed in the product guide

Expansion

Slot 1: PCIe 3.0 x16 (double-wide) or x8, full-height half-length (riser 1)
Slot 2: PCIe 3.0 x8, full-height half-length (riser 1; not present when slot 1 is x16)
Slot 3: PCIe 3.0 x8 or ML2 x8, full-height half-length (riser 1)
Slot 4: PCIe 3.0 x8, low profile, vertical slot on the system board
Slot 5: PCIe 3.0 x16, full-height half-length (riser 2; needs CPU 2)
Slot 6: PCIe 3.0 x8, full-height half-length (riser 2)
LOM: Dedicated LOM card slot
Riser options: Riser 1: x8/x8/x8, x8/x8/x8ML2 or x16/x8 FH. Riser 2: (x16/x8)/(x16/x16) FH riser kit
Serial port: Optional COM Port Upgrade Kit (DB-9) replaces slot 4

Networking

Onboard: 2 × 1 GbE RJ-45 on the Intel X722 in the C622 PCH (no 10/100 Mb)
LOM: Optional LOM card for 2 more ports: 2 × 1 GbE RJ-45, 2 × 10GBASE-T or 2 × 10 GbE SFP+
ML2: Slot 3 with the x8/x8/x8ML2 riser: 2 × 10 GbE (SFP+ or RJ-45) ML2 adapters (no NC-SI sideband in the SR550)
PCIe: 1/10/25 GbE adapters, Omni-Path, 16 Gb Fibre Channel HBAs (8 Gb in PRC/Asia Pacific)
Management: 1 × RJ-45 10/100/1000 Mb XClarity Controller port

Power

PSU options: 550 W Platinum, 750 W Platinum, 750 W Titanium (200-240 V), 1100 W -48 V DC (special bid)
Redundancy: 1 or 2 hot-swap PSUs, N+N depending on configuration; both must be identical
Connector: AC PSUs use C14 inlets
Max load: 722 W (550 W PSU), 984 W (750 W Platinum)
Cooling: 3 (one CPU) or 4 (two CPUs) non-hot-swap fans, N+1; M.2 Thermal Kit needed with M.2 5100/5300/5400 SSDs in 12 × LFF models

Ports

Front: 1 × USB 2.0 with XClarity Controller access, 1 × USB 3.0, optional VGA (EIA latch with VGA kit)
Rear: 2 × USB 3.0, 1 × VGA, 2 × 1 GbE RJ-45, 1 × XCC 1 GbE RJ-45, optional DB-9 serial

Physical

Form factor: 2U rack
Dimensions: 445 mm W × 87 mm H × 764 mm D (17.5 × 3.4 × 30.1 in); 482 mm wide across the EIA flanges
Weight: 19 kg minimum, 26 kg maximum
Machine types: 7X03 (1-year warranty), 7X04 (3-year warranty)
Environment: ASHRAE A2 (10-35 °C); A3/A4 with two PSUs and no fan failure
Rails: Tool-less or screw-in slide rails (optional 2U CMA) or tool-less friction rail

Management

BMC: Lenovo XClarity Controller (XCC) Standard, upgradable to Advanced or Enterprise (Pilot 4)
Tools: XClarity Provisioning Manager, XClarity Essentials, XClarity Administrator, XClarity Integrators, XClarity Energy Manager, Capacity Planner
IPMI: IPMI over LAN supported but disabled by default (can be enabled in CTO orders)
Security: TPM 1.2/2.0, power-on/admin passwords, secure firmware updates, optional lockable bezel; TCM / Nationz TPM in PRC
Announced: Product guide first published 2017-07-11 (2nd Gen guide 2019-04-02)
Withdrawn: 1st Gen CPU configurations 2021-02-02; server withdrawn from marketing 2023-10-13

Operating systems

2nd Gen CPUs: Windows Server 2016/2019/2022; RHEL 7.6-7.9, 8.0-8.9, 9.0-9.3; SLES 12 SP4/SP5, 15-15 SP5; Ubuntu 22.04 LTS; VMware ESXi 6.5 U2 through 8.0 U3
1st Gen CPUs: Adds Windows Server 2012 R2 and version 1709; RHEL 6.9/6.10 and 7.3-7.5; SLES 11 SP4, 12 SP2/SP3; ESXi 6.0 U3, 6.5, 6.5 U1, 6.7

Processors

Intel Xeon Bronze 3204
Intel Xeon Bronze 3206R
Intel Xeon Silver 4208
Intel Xeon Silver 4209T
Intel Xeon Silver 4210
Intel Xeon Silver 4210R
Intel Xeon Silver 4214
Intel Xeon Silver 4214R
Intel Xeon Silver 4214Y
Intel Xeon Silver 4215
Intel Xeon Silver 4216
Intel Xeon Gold 5215
Intel Xeon Gold 5215M
Intel Xeon Gold 5215L
Intel Xeon Gold 5217
Intel Xeon Gold 5218
Intel Xeon Gold 5218B
Intel Xeon Gold 5218R
Intel Xeon Gold 5218T
Intel Xeon Gold 5220
Intel Xeon Gold 5220S
Intel Xeon Gold 5220T
Intel Xeon Gold 5222
Intel Xeon Gold 6209U
Intel Xeon Gold 6222V
Intel Xeon Gold 6226
Intel Xeon Gold 6230
Intel Xeon Gold 6230N
Intel Xeon Gold 6230T
Intel Xeon Gold 6238T
Intel Xeon Platinum 8253
Intel Xeon Platinum 8256
Intel Xeon Bronze 3104
Intel Xeon Bronze 3106
Intel Xeon Silver 4108
Intel Xeon Silver 4109T
Intel Xeon Silver 4110
Intel Xeon Silver 4112
Intel Xeon Silver 4114
Intel Xeon Silver 4114T
Intel Xeon Silver 4116
Intel Xeon Silver 4116T
Intel Xeon Gold 5115
Intel Xeon Gold 5117
Intel Xeon Gold 5118
Intel Xeon Gold 5119T
Intel Xeon Gold 5120
Intel Xeon Gold 5120T
Intel Xeon Gold 5122
Intel Xeon Gold 6126
Intel Xeon Gold 6126T
Intel Xeon Gold 6128
Intel Xeon Gold 6130
Intel Xeon Gold 6130T
Intel Xeon Gold 6138
Intel Xeon Gold 6138T
Intel Xeon Platinum 8153
Intel Xeon Platinum 8156