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In the table:
Green = No restriction to the number of X6 Compute Nodes that are installable.
Yellow = Some bays must be left empty in the chassis.
Table 4. Maximum number of X6 Compute Nodes that are installable based on the power supplies that
are installed and the power redundancy policy that is used
2100 W power supplies installed
N+1, N=5
TDP
6 power
rating
supplies
x280, x480, or x880 X6 with 2 sockets
105 W
7
130 W
7
155 W
7
x480 or x880 X6 with 4 sockets
105 W
3
130 W
3
155 W
3
x880 X6 with 8 sockets
105 W
1
130 W
1
155 W
1
Scalability
The X6 compute nodes can scale to a 4-socket or 8-socket complex depending on the processor that is
installed into the node:
An x880 X6 node with Intel Xeon E7-8800 v2 family processors can scale up to an 8-socket
configuration, and supports 2-socket, 4-socket, and 8-socket configurations. All the processors in
these 2-socket, 4-socket, and 8-socket configurations must be identical.
An x480 X6 node with Intel Xeon E7-4800 v2 family processors can scale up to a 4-socket
configuration, and supports 2-socket and 4-socket configurations. All the processors in these 2-socket
and 4-socket configurations must be identical.
An x280 X6 node with Intel Xeon E7-2800 v2 family processors supports only 2-socket configurations.
The processors in 2-socket configurations must be identical.
The scaled X6 compute nodes are connected together through a front interconnect system. The
interconnection has a QPI bus plus the sideband signals that are needed for correct operation.
Flex System X6 Compute Node (7903)
N+1, N=4
N+1, N=3
5 power
4 power
supplies
supplies
7
6
7
5
7
5
3
3
3
3
3
2
1
1
1
1
1
1
2500 W power supplies installed
N+N, N=3
N+1, N=5
6 power
6 power
supplies
supplies
6
7
6
7
5
7
3
3
3
3
3
3
1
1
1
1
1
1
N+1, N=4
N+1, N=3
5 power
4 power
supplies
supplies
7
7
7
7
7
7
3
3
3
3
3
3
1
1
1
1
1
1
N+N, N=3
6 power
supplies
7
7
7
3
3
3
1
1
1
11
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