IBM 8841 - eServer xSeries 236 Option Installation Manual

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Table 2. DIMM installation sequence (continued)Pair DIMM connectors Pair DIMM connectors3 5 and 6 4 7 and 8v The second pair does not have to contain DIMMs of the same size, speed, type,and technology as the first pair.v The server supports Chipkill ™ memory if all DIMMs are type x4 and larger than512 MB. Using any 256 MB DIMMs, or any DIMM that is not of type x4, disablesChipkill memory.Table 3. Chipkill memory supported configurationsDIMM type Minimum DIMM sizex4 512 MBv The server supports Online-Spare memory. See Table 4 for the supportedOnline-Spare memory configurations.Table 4. Online-Spare memory supported configurationsSystemDIMM Pair DIMM connectorsOnline-SpareDIMM Pair DIMM connectors1 1 and 2 2 3 and 43 5 and 6 4 7 and 8v You do not have to save new configuration information when installing orremoving DIMMs. The only exception is if you replace a faulty DIMM that wasmarked as Disabled in the Memory Settings menu. In this case, you mustre-enable that memory row in the Configuration/Setup Utility program or reloadthe default memory settings. See the User’s Guide on the IBM xSeriesDocumentation CD for more information.v When you restart the server after adding or removing a DIMM, the serverdisplays a message that the memory configuration has changed.The following illustration shows how to install a pair of DIMMs on the system board.DIMM 8DIMM 7DIMM 6DIMM 5DIMM 4DIMM 3DIMM 2DIMM 1Chapter 2. Installing options 35