IBM 887022X Maintenance Manual - Page 116
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v When installing or removing DIMMs, it must be done in pairs and in the following order: Table 5. Memory installation order Port Bank Pair 1 1 1 2 1 2 1 2 3 2 2 4 1 3 5 2 3 6 1 4 7 2 4 8 Slot Number 1, 3 9, 11 5, 7 13, 15 2, 4 10, 12 6, 8 14, 16 Bank 1 Bank 2 Bank 1 Bank 2 DIMM error indicators are built into each handle. Bank 3 Bank 4 Port 1 Bank 3 Bank 4 Port 2 Figure 57. DIMM banks v Each pair or bank of DIMMs must be of the same size and clock speed. v When you install or remove a bank of DIMMs, the server configuration information changes. Therefore, you must change and save the new configuration information by using the Configuration/Setup Utility program. When you restart the server, the system displays a message indicating that the memory configuration has changed. Start the Configuration/Setup Utility program and select Save Settings (see "Starting the Configuration/Setup Utility program" on page 14). v The illustrations in this document might differ slightly from your hardware. 106 xSeries 445 Type 8870: Hardware Maintenance Manual and Troubleshooting Guide