If you have other devices to install or remove, do so now. Otherwise, go to“Completing the installation” on page 38.Installing a memory module (DIMM)The following notes describe the types of dual inline memory modules (DIMMs) thatthe server supports and other information that you must consider when you installDIMMs:v The server supports up to four unbuffered 512 MB, 1 GB, and 2 GB DIMMs, fora maximum of 8 GB of system memory. See http://www.ibm.com/servers/eserver/serverproven/compat/us/ for a list of memory modules that you can use with theserver.Note: Because some memory is reserved for system operation, the actualusable memory size that is reported by the operating system is less thanthe total installed size.v The server comes with a minimum of two 512 MB DIMMs or two 1 GB DIMMs,installed in connectors 1 and 3 or connectors 2 and 4. When you installadditional DIMMs, you must install two identical DIMMs at a time, in the ordershown in the following table, to maintain performance.Table 3. DIMM installation sequenceDIMMs DIMM connectors2 DIMMs 1 and 34 DIMMs 1, 3, 2, 4DIMM connector 1DIMM connector 2DIMM connector 3DIMM connector 4v Each DIMM in a pair must be the same size, speed, type, and technology toensure that the server will operate correctly.Chapter 2. Installing optional devices 31
