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Lenovo ThinkSystem SN550

End of saleServersblade
Lenovo ThinkSystem SN550blade2 × SFF 2.5" bays

The Lenovo ThinkSystem SN550 is a half-wide 2-socket blade server engineered for the Flex System Enterprise Chassis. Powered by 1st and 2nd Generation Intel Xeon Scalable processors, it delivers high compute density, 24 DIMM slots, and unified I/O mezzanine fabric connectivity for enterprise private clouds and consolidated virtualization clusters.

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Specifications

BrandLenovo
FamilyThinkSystem SN
Form factorblade
ReleasedJul 2017
End of saleDec 2022
End of supportDec 2027
ProcessorUp to 2x 1st or 2nd Gen Intel Xeon Scalable processors up to 28 cores each (up to 205W TDP)
Memory24x DDR4 DIMM slots (12 per CPU) supporting up to 3TB DDR4-2933 ECC RDIMM/LRDIMM
Drive baysUp to 2x 2.5-inch SAS/SATA/NVMe hot-swap SSDs plus dual internal M.2 boot drives
Expansion slots2x PCIe 3.0 x16 I/O mezzanine slots connecting to Flex System midplane fabric switches
NetworkMezzanine I/O cards supporting dual or quad-port 10GbE, 25GbE, or 16Gb/32Gb Fibre Channel
Power supplyShared power and cooling delivered through the Flex System Enterprise Chassis
ManagementLenovo XClarity Controller (XCC)

Generations

Compatible parts

Memory

Hard drives

Works together

How the Lenovo ThinkSystem SN550 connects to servers, storage and the network: 4 ways, with the parts and products on each path.

Fibre Channel SANiSCSI and NVMe/TCP over EthernetDirect-attached SASFile storage (NFS and SMB)

Fibre Channel SAN

Match the speed: 16Gb and 32Gb FC HBAs, switches and array ports work together, and each generation also runs one or two speeds below its own (a 32Gb port runs at 16Gb and 8Gb).

Adapters for the server (check the fit list)

Switches

Storage

Optics

Fibre Channel SAN: how it fits together

iSCSI and NVMe/TCP over Ethernet

Keep the speed the same at all three points: a 25GbE server, a 25GbE switch port and a 25GbE array port. Mixed speeds work but the slowest link sets the pace.

Adapters for the server (check the fit list)

Switches

Storage

Optics

iSCSI and NVMe/TCP over Ethernet: how it fits together

Direct-attached SAS

12Gb SAS uses Mini-SAS HD (SFF-8644) connectors; older 6Gb gear uses Mini-SAS (SFF-8088). Adapter cables exist, but the link runs at the slower speed.

Adapters for the server (check the fit list)

Storage

Direct-attached SAS: how it fits together

File storage (NFS and SMB)

Front-end ports face the clients; back-end ports (on scale-out systems) connect the nodes to each other and need their own switch pair.

Adapters for the server (check the fit list)

Switches

Storage

Optics

File storage (NFS and SMB): how it fits together

Plan and size it

Check compatibility with Lenovo

Before you buy, confirm the exact configuration against the vendor's own lists: firmware levels, operating systems, adapters and optics that Lenovo has tested with the Lenovo ThinkSystem SN550.

Equivalent models from other brands

FAQ

What chassis accommodates the ThinkSystem SN550 blade?

The SN550 installs exclusively into the 14-bay Flex System Enterprise Chassis.

How many SN550 server blades fit into one Flex System chassis?

Up to 14 half-wide SN550 blade servers fit into a single 10U Flex System Enterprise Chassis.

Buying or selling ThinkSystem SN550?

New, refurbished or used. Tell us the quantity and condition and we connect you with a vetted reseller in your region, usually within one working day.

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Sources