HP LH4r HP Netserver LXr 8000 Installation Guide - Page 54
Removing DIMMs
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Chapter 5 Installing Additional Memory Removing DIMMs You may need to remove a bank of DIMM modules to downsize your memory configuration, or to replace a defective DIMM. Follow these guidelines for removing DIMMs. • If reducing the number of DIMMs on the board, remove them only in increments of one full bank (four DIMMs). • When you finish removing DIMMs, the remaining DIMMs should be arranged on the board in one of the configurations shown in Figures 5-4 and 5-5. • When removing banks of DIMMs from a system with DIMMs on both memory boards, make sure that both boards have identical DIMM configurations when you finish. (But if you are reducing the system to its minimum memory configuration (four DIMMs) put all four DIMMs on the main memory board and leave the secondary memory board empty. See "Memory Configuration Guidelines," earlier in this chapter. ) See "Memory Configuration Guidelines" for the complete DIMM placement guidelines. Follow these steps to remove a bank of four DIMMs from the memory board: 1. Log off all users. Back-up files. Follow instructions in your network operating system (NOS) documentation to gracefully shut down all networking software and applications. 2. Press the power switch on the HP NetServer's control panel when prompted by the operating system. Normally, this is the complete procedure. NOTE The power supplies will continue to provide standby current to the NetServer until the power cable is disconnected. 3. Disconnect the power cables and signal cables, and if necessary, label them to support reassembly. 4. Remove the front bezel. See Chapter 3 for details. 5. Remove the memory board. See "Removing and Replacing the Memory Board" earlier in this chapter. 6. Determine which bank of DIMMs you wish to remove. 46