Cisco Systems UCS C210 manual Installing DIMMs, Memory Performance Guidelines and Population Rules

Chapter

Installing DIMMs

This section includes the following sections:

•Memory Performance Guidelines and Population Rules, page 3-21

•DIMM Installation Procedure, page 3-24

Note To ensure the best server performance, it is important that you are familiar with memory performance guidelines and population rules before you install or replace memory modules.

Memory Performance Guidelines and Population Rules

This section describes the type of memory that the server requires and its effect on performance. The following topics are covered:

•Supported DIMMs, page 3-21

•Banks and Channels, page 3-21

•Memory Population Rules, page 3-23

•Memory Mirroring and RAS, page 3-24

Supported DIMMs

The qualified and supported part numbers for this component are subject to change over time. For the most up-to-date list of replaceable components, see the following URL and then scroll to Technical Specifications:

http://www.cisco.com/en/US/products/ps10493/products_data_sheets_list.html

Note Non-ECC UDIMMs do not support temperature sensors.

Banks and Channels

Each Channel is identified by a letter—A, B, C for one CPU, and D, E, F for the other CPU. Each bank is identified by a numbers, either 1 or 2. For example DIMM slots A1, B1, and C1 belong to Bank–1, while A2, B2, C2 belong to Bank–2. Note that each slot within Bank 1 is blue, while each slot within Bank 2 is black.

Figure 3-11shows how banks and channels are physically laid out on the motherboard. The DIMM slots on the right (channels A, B, and C) are associated with CPU1, while the DIMM slots on the left (channels D, E, and F) are associated with CPU2.

	Cisco UCS C210 Server Installation and Service Guide
OL-20887-02		3-21