IBM x3500 User Guide - Page 51
System, Summary
UPC - 883436005760
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1 and DIMM connector 4. However, the size, speed, type, and technology of the DIMMs that you install in DIMM connector 7 and DIMM connector 10 must match each other. - The following table shows the DIMM upgrade configuration sequence for operating in non-mirroring mode (normal mode). Table 4. 5. DIMM upgrade configuration sequence in non-mirroring mode Number of DIMMs DIMM connectors 2 1, 4 4 1, 4, 7, 10 6 1, 4, 7, 10, 2, 5 8 1, 4, 7, 10, 2, 5, 8, 11 10 1, 4, 7, 10, 2, 5, 8, 11, 3, 6 12 1, 4, 7, 10, 2, 5, 8, 11, 3, 6, 9, 12 v The amount of usable memory is reduced depending on the system configuration. A certain amount of memory must be reserved for system resources. To view the total amount of installed memory and the amount of configured memory, run the Configuration/Setup Utility program and select System Summary from the menu. For additional information, see Chapter 3, "Configuring the server," on page 49. v The following tables show examples of maximum memory capacity when the server operates in mirroring and non-mirroring modes, using identical single-rank, x8 technology or double-rank, x4 technology DIMMs. The memory capacity is dependent on the size and technology of the DIMMs that you install. Table 5. Example of the memory capacity when identical x8 technology single-rank DIMMs are used DIMMs installed x8 single-rank technology Memory available in Memory available in mirroring mode non-mirroring mode 8 512 MB 2 GB 4 GB 8 1 GB 4 GB 8 GB 8 2 GB 8 GB 16 GB Table 6. Example of the memory capacity when identical x4 technology double-rank DIMMs are used DIMMs installed x4 double-rank technology Memory available in Memory available in mirroring mode non-mirroring mode 8 512 MB 8 GB 16 GB 8 1 GB 16 GB 32 GB v When you restart the server after you add or remove a DIMM, the server displays a message that the memory configuration has changed. v If a problem with a DIMM is detected, light path diagnostics lights the system-error LED on the front of the server, indicating that there is a problem, and guides you to the defective DIMM. When this occurs, first identify the defective DIMM; then, remove and replace the DIMM. Chapter 2. Installing optional devices 37