Cisco Cisco C880 M4 Server
Appendix F Component Mounting Conditions
F.2
F.2
DIMM
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C122-E175-01EN
Appendix F Component Mounting
Conditions
This appendix describes the mounting conditions of components for the Cisco C880 server.
F.1
CPU
This section describes the number of CPUs that can be mounted and the criteria for mixing different types of
CPU.
CPU.
CPU mounting criteria
-
Two CPUs must be mounted in a SB.
CPU mixing condition
-
In the system, all CPUs must have the same frequency, cache size, core number, power, QPI rate, and
scale.
scale.
F.2
DIMM
This section describes the number of DIMMs that can be mounted and the criteria for mixing different types of
DIMM.
DIMM.
DIMM mounting conditions
-
At least two DIMMs are required per CPU.
-
Up to 24 DIMMs can be mounted per CPU.
-
DIMMs must be mounted in the following units:
two DIMMs when normal mode, four DIMMs when full mirror mode or partial mirror mode, and six DIMMs
when spare mode.
two DIMMs when normal mode, four DIMMs when full mirror mode or partial mirror mode, and six DIMMs
when spare mode.
DIMM mixing criteria
DIMM criteria for Cisco C880 M4 server (E7-8800 v3 CPU).
-
16GB DIMMs and 32 GB DIMMs cannot be mixed in an SB or system.
-
32GB RDIMMs and 32 GB LRDIMMs cannot be mixed in an SB or system.
TABLE F.1 Relationship between DIMM size and mutual operability (within an SB)
DIMM size
16 GB RDIMM
32 GB RDIMM
32 GB LRDIMM
16 GB RDIMM
Supported
Not supported
Not supported
32 GB RDIMM
Not supported
Supported
Not supported
32 GB LRDIMM
Not supported
Not supported
Supported
TABLE F.2 Relationship between DIMM size and mutual operability (within the system)
DIMM size
16 GB
32 GB
16 GB
Supported
Not supported
32 GB
Not supported
Supported
DIMM criteria for Cisco C880 M4 server (E7-8800 v2 CPU).
-
16GB DIMMs and 32 GB DIMMs cannot be mixed in an SB or system.
TABLE F.3 Relationship between DIMM size and mutual operability (within an SB)
DIMM size
16 GB
32 GB
16 GB
Supported
Not supported
32 GB
Not supported
Supported