S e n d d o c u m e n t c o m m e n t s t o u c s - d o c f e e d b a c k @ c i s c o . c o m
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Cisco UCS B250 Extended Memory Blade Server Installation and Service Note
OL-22474-03
Memory and Performance
Note
This server does not support odd numbers of DIMMs in a channel, or a configuration of 6 DIMMs per
channel. These are the only three supported DIMM configurations for a channel. The DIMMs are sold
in matched pairs which must be installed in the pairs shown in
Table 7
. Mixing pairs, even otherwise
identical sets within a channel, will lead to memory errors.
Figure 14
shows a logical view of DIMMs and Channels.
Figure 14
Logical DIMMs and Channels
Each CPU in a Cisco UCS B250 blade server supports 2 logical DIMMs (up to 8 physical DIMMs) and
3 channels.
DIMMs can be used in the extended memory blade server in a 2 DIMM per Channel (2 DPC)
configuration, a 4 DIMM per channel (4 DPC), or in an 8 DIMMs per Channel (8 DPC) configuration
using the slots described in
Table 7
. The physical layout of the slots is shown in
Figure 15
.
