Internal Storage - Lenovo ThinkSystem SR650 Product Manual

If memory mirroring is used, then DIMMs must be installed in pairs (a minimum of one pair per each processor),
and both DIMMs in a pair must be identical in type and size.
If memory rank sparing is used, then a minimum of one quad-rank DIMM or two single-rank or dual-rank DIMMs
must be installed per populated channel (the DIMMs do not need being identical). In rank sparing mode, one rank
of a DIMM in each populated channel is reserved as spare memory. The size of a rank varies depending on the
DIMMs installed.
SDDC, memory mirroring, and memory rank 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 memory options available for the SR650 server.
Table 12. Memory options
Description
RDIMMs - 2666 MHz
ThinkSystem 8GB TruDDR4 2666 MHz (1Rx8 1.2V) RDIMM
ThinkSystem 16GB TruDDR4 2666 MHz (1Rx4 1.2V) RDIMM
ThinkSystem 16GB TruDDR4 2666 MHz (2Rx8 1.2V) RDIMM
ThinkSystem 32GB TruDDR4 2666 MHz (2Rx4 1.2V) RDIMM
LRDIMMs - 2666 MHz
ThinkSystem 64GB TruDDR4 2666 MHz (4Rx4 1.2V) LRDIMM
3DS RDIMMs - 2666 MHz
ThinkSystem 128GB TruDDR4 2666 MHz (8Rx4 1.2V) 3DS RDIMM
* The maximum quantity shown is with one processor / two processors

Internal storage

The SR650 server supports the following internal drive bay configurations:
1. Up to 16 SFF and 2 LFF hot-swap drive bays:
a. 8x 2.5" SAS/SATA + 8x 2.5" SAS/SATA + 2x 3.5" SAS/SATA (rear)
b. 4x 2.5" SAS/SATA & 4x 2.5" AnyBay + 8x 2.5" SAS/SATA + 2x 3.5" SAS/SATA (rear)
c. 4x 2.5" SAS/SATA & 4x 2.5" AnyBay + 4x 2.5" SAS/SATA & 4x 2.5" AnyBay +
2x 3.5" SAS/SATA (rear)
2. Up to 24 SFF and 2 LFF hot-swap drive bays:
a. 8x 2.5" SAS/SATA + 8x 2.5" SAS/SATA + 8x 2.5" SAS/SATA + 2x 3.5" SAS/SATA (rear)
b. 4x 2.5" SAS/SATA & 4x 2.5" AnyBay + 8x 2.5" SAS/SATA + 8x 2.5" SAS/SATA +
2x 3.5" SAS/SATA (rear)
c. 4x 2.5" SAS/SATA & 4x 2.5" AnyBay + 4x 2.5" SAS/SATA & 4x 2.5" AnyBay + 8x 2.5" SAS/SATA +
2x 3.5" SAS/SATA (rear)
d. 4x 2.5" SAS/SATA & 4x 2.5" AnyBay + 4x 2.5" SAS/SATA & 4x 2.5" AnyBay + 4x 2.5" SAS/SATA &
4x 2.5" AnyBay (no rear drive bays)
3. Up to 10 LFF SAS/SATA hot-swap drive bays: 8x 3.5" SAS/SATA (front) + 2x 3.5" SAS/SATA (rear)
4. Up to 14 LFF hot-swap drive bays:
a. 12x 3.5" SAS/SATA (front) + 2x 3.5" SAS/SATA (rear)
b. 8x 3.5" SAS/SATA & 4x 3.5" AnyBay (front) + 2x 3.5" SAS/SATA (rear)
In addition, the SR650 server models can be configured with one or two internal M.2 SATA SSDs. The server also
supports configurations without drive bays.
Lenovo AnyBay is a unique drive bay type that allows a choice of drive interface types in the same drive bay: SAS
drives, SATA drives, or U.2 NVMe PCIe drives.
Lenovo ThinkSystem SR650 Server
Part Feature Maximum
number code supported*
7X77A01301 AUU1 12 / 24
7X77A01302 AUNB 12 / 24
7X77A01303 AUNC 12 / 24
7X77A01304 AUND 12 / 24
7X77A01305 AUNE 12 / 24
7X77A01307 AUNF 12 / 24
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