IBM 8685 - eServer xSeries 255, Installation Manual

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Configuration/Setup Utility program assigns the Hot Spare Memory bank
according to your server configuration. If your server has a two-way interleaved
configuration, the Hot Spare Memory bank becomes the DIMMs in connectors D2
and D8. If your server has a four-way interleaved configuration, the Hot Spare
Memory bank becomes the DIMMs in connectors D1, D2, D7, and D8. See the
User’s Guide on the IBM xSeries Documentation CD for further details about
enabling the Hot Spare Memory feature.
When you install DIMMs, install them in the order listed in Table 2.
Table 2. DIMM installation order
Interleaving Number of DIMMs Install DIMMs in these connectors
Two-way 2 D2, D8 (standard)
Two-way 4 D2, D8 (standard) (Hot Spare memory
bank for two-way interleaving)
D4, D10
Two-way 6 D2, D8 (standard) (Hot Spare memory
bank for two-way interleaving)
D4, D10
D6, D12
Four-way 4 D2, D8, D1, D7
Four-way 8 D2, D8, D1, D7 (Hot Spare memory bank
for four-way interleaving)
D4, D10, D3, D9
Four-way 12 D2, D8, D1, D7 (Hot Spare memory bank
for four-way interleaving)
D4, D10, D3, D9
D6, D12, D5, D11
Complete the following steps to install a DIMM.
1. Review the information beginning with “Safety” on page v through “Handling
static-sensitive devices” on page x.
2. Turn off the server and disconnect all power cords and external cables.
3. Remove the top cover.
4. Remove the air baffle.
5. Remove the memory-board assembly from the server and open the airflow
guide.
Chapter 2. Installing options
13