Troubleshooting guide

28
Cisco UCS B200 M3 Blade Server Installation and Service Note
OL-26624-01
Memory and Performance
Memory and Performance
This section describes the type of memory that the B200 M3 blade server requires, and its effect on
performance. The following topics are covered:
• Supported DIMMs, page 28
• Memory Arrangement, page 28
• Memory Performance, page 31
• Memory Mirroring and RAS, page 31
Supported DIMMs
The DIMMs that are supported in this blade server are constantly being updated. A list of currently
supported and available DIMMs is in the specification sheets at this URL:
http://www.cisco.com/en/US/products/ps10280/products_data_sheets_list.html
Cisco does not support third-party memory DIMMs, and in some cases their use may irreparably damage
the server and require an RMA and down time.
Memory Arrangement
The blade server contains 24 DIMM slots—12 for each CPU. Each set of 12 DIMM slots is arranged into
four channels, where each channel has three DIMMs (see Figure 20 and Figure 21).
Figure 20 Memory Slots within the Blade Server
1 Channels A-D for CPU 1 2 Channels E-H for CPU 2
331374
CPU 1
CPU 2
1 1 2 2