Memory
Installing and removing DIMMs
When you change the amount of memory in this server, memory must be added to, or removed from memory boards (see “Installing and removing memory boards” on page 85).
When you upgrade your server memory, make sure that you install the correct type of memory. Your server supports from 512 MB to 64 GB total memory. Supported DIMM sizes include 256 MB, 512 MB, 1 GB, 2 GB and 4 GB.
Memory modules must be identical in each bank. Use only
Caution
On each memory board, memory modules must be installed in pairs, to completely fill each bank, and the banks must be filled in order. If you have memory installed incorrectly, your server will not start up.
Memory boards must be populated using the following guidelines:
■Each memory board has two DIMM banks (a pair of DIMM sockets), and a bank may consist of one or two ranks (a pair of
■Bank 1 - DIMM sockets 1A and 1B
■Bank 2 - DIMM sockets 2A and 2B
■Within a memory bank, DIMMs must be installed in identical pairs.
■Same size
■Same manufacturer
■Same number of devices on the DIMMs
■DIMM banks must be populated in order on each memory board, starting with Bank 1 (sockets 1A and 1B).
■Dual rank DIMMs must be populated before single rank DIMMs.
■For best memory performance, use identical DIMMs on each memory board.
■Use only DDR2 DIMMs. No other DIMMs will fit into the DIMM sockets.
■Use only DIMMs with
■The maximum DIMM height is
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