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Chassis support
The SN550 server is supported in the Flex System chassis as listed in the following table.
Table 11. Chassis support
Chassis models
8721-HC1 based:
8721-A1x, LRx, DCx
8721-K1G, E1Y, E2Y
8721-HC2 based:
8721-ALx, DLx
8721-E3Y, E4Y
7385-DCx
Note: CMM2 firmware should be 1.6.1 or later to support ThinkSystem compute nodes
Up to 14 SN550 servers can be installed in the chassis; however, the actual number that can be installed
in a chassis depends on the following factors:
TDP power rating for the processors that are installed in the SN550
Number of power supplies that are installed in the chassis
Capacity of the installed power supplies (2100 W or 2500 W)
Chassis power redundancy policy that is used (N+1 or N+N)
The following table provides guidelines about what number of SN550 servers can be installed. For more
information, use the Power Configurator, which is found at the following website:
https://datacentersupport.lenovo.com/us/en/solutions/lnvo-pwrconf
The following color coding was used In the table:
Green = No restriction on the number of SN550 servers that can be installed
Yellow = Some bays must be left empty in the chassis
Table 12. Maximum number of SN550 servers that can be installed based on installed power supplies and
power redundancy policy used
SN550 CPU
2100 W power supplies installed
TDP rating
N+1, N=5
6 power
supplies
70 W
14
85 W
14
105 W
14
125 W
14
130 W
14
140 W
14
150 W
14
165 W
14
Lenovo ThinkSystem SN550 Server
Description
Lenovo Flex System Enterprise Chassis
with CMM (68Y7030) standard
Lenovo Flex System Enterprise Chassis
with CMM2 (00FJ669) standard
Lenovo Flex System Carrier-Grade Chassis
N+1, N=4
N+1, N=3
5 power
5 power
supplies
supplies
14
11
14
11
14
11
14
11
13
11
13
11
12
11
12
11
2500 W power supplies installed
N+N, N=3
N+1, N=5
6 power
6 power
supplies
supplies
11
14
11
14
11
14
11
14
11
14
11
14
11
14
11
14
Supports SN550
No
Yes
No
N+1, N=4
N+1, N=3
N+N, N=3
5 power
4 power
6 power
supplies
supplies
supplies
14
14
14
14
14
14
14
14
14
14
13
14
14
12
13
14
12
13
14
12
12
14
11
12
16
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