Internal Storage - Lenovo thinkserver rd550 Product Manual

The following memory protection technologies are supported:
ECC
Lockstep (SDDC x4/x8)
Memory mirroring
Memory sparing
Patrol scrubbing
Demand scrubbing
If lockstep or memory mirroring is used, RDIMMs must be installed in pairs (a minimum of one pair per each
processor), and both RDIMMs in a pair must be identical in type, size, and rank.
If memory sparing is used, one rank of a DIMM in each populated channel is reserved as spare memory;
therefore, single-rank DIMMs cannot be used. DIMMs in a pair must be identical in type, size, and rank.
Lockstep, memory mirroring, and memory sparing modes are mutually exclusive. Only one operational
memory mode can be enabled on the server, and it is a system-wide setting.
The following table lists available memory options for the RD550.
Table 5. Memory options
Description
RDIMMs
Lenovo ThinkServer 4GB DDR4-2133MHz (1Rx8) RDIMM
Lenovo ThinkServer 8GB DDR4-2133MHz (1Rx4) RDIMM
Lenovo ThinkServer 16GB DDR4-2133MHz (2Rx4) RDIMM
Lenovo ThinkServer 32GB DDR4-2133MHz (2Rx4) RDIMM
LRDIMMs
Lenovo ThinkServer 32GB DDR4-2133MHz (4Rx4) LRDIMM

Internal storage

The RD550 server supports the following internal storage configurations:
Server models without any drive bays that can be upgraded to 4x 3.5-inch SAS/SATA hot-swap
drive bays
Server models with 4x 3.5-inch SAS/SATA hot-swap drive bays that can be expanded with 2x 2.5-
inch SATA hot-swap rear drive bays
Server models with 12x 2.5-inch SAS/SATA hot-swap drive bays; two of these SAS/SATA drive
bays can be converted to 2x 2.5" AnyBay drive bays.
The 3.5-inch drive bay models of the RD550 also support an optional internal optical drive.
Lenovo ThinkServer RD550 (E5-2600 v3)
Part number Maximum
supported
4X70F28588 24 (12 per CPU)
4X70F28589 24 (12 per CPU)
4X70F28590 24 (12 per CPU)
4X70G88311 24 (12 per CPU)
4X70F28591 24 (12 per CPU)
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