Cisco Cisco UCS B22 M3 Blade Server Datenbogen
Product Notes
Memory notes, allowable configurations, and rules/guidelines
Table 2.
DIMM Installation Order
DIMM Population Rules
Preferred
DIMM Population Order
DIMM per CPU
Install in Slots
Install only in matched pairs. Memory for this server is sold in pairs that are
matched in size, speed, manufacturer, and other parameters, and mixing
DIMMs that are not matched can cause the memory to not be recognized by
the system.
matched in size, speed, manufacturer, and other parameters, and mixing
DIMMs that are not matched can cause the memory to not be recognized by
the system.
2 (blue)
(B0, B1)
Make sure the latches are fully seated into the DIMM.
4 (blue)
(B0, B1) - (D0, D1)
This blade server needs at least one matched pair of DIMMs attached to CPU 1
or CPU 2. Both CPUs can boot and run from a single DIMM pair.
or CPU 2. Both CPUs can boot and run from a single DIMM pair.
8 (blue, white)
(B0, B1) - (D0, D1) - (A0, A1) - (C0, C1)
DIMMs installed in slots for an absent CPU are not recognized. For optimal
performance, distribute DIMMs evenly across both CPUs.
performance, distribute DIMMs evenly across both CPUs.
16 (blue, white
yellow, black)
yellow, black)
(B0, B1) - (D0, D1) - (A0, A1) - (C0, C1)
(B2, B3) - (D2, D3) - (A2, A3) - (C2, C3)
The UCS B230 contains 32 memory DIMM slots. Each CPU has 16 DIMM slots organized in pairs.
The B230 M1 blade server needs at least one matched pair of DIMMs attached to CPU 1 or CPU 2.
Both CPUs can boot and run from a single DIMM pair. The DIMM pairs must be identical (the same size, speed,
and manufacturer) and are sold in appropriately matched pairs, but one DIMM pair on a CPU can be different from
other pairs.
The DIMMs installed in slots for an absent CPU are not recognized.
Memory DIMM’s should be installed evenly across the installed CPUs, though it is not a requirement.
Memory Arrangement
DIMM slots are color-coded blue, white, yellow, and black, and it is recommended that the memory be installed
memory in that order.
Figure 5 shows how the DIMMs slots are laid out on the blade server motherboard. A CPU uses the DIMM slots
directly to the right or the left of the CPU. Note that the arrangement for CPU 2 and CPU 1 is not identical.
Contents:
© 2011 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information.
Page 12 of 15