HP rp3440 User Service Guide, Sixth Edition - HP 9000 rp3410/rp3440 - Page 70

Installing Additional System Memory The server has 12 memory sockets for installing DDR SDRAM memory modules. System memory DIMMs are located on the system board. WARNING! Ensure that the server is powered off and all the power sources have been disconnected from the server before removing or replacing the system memory. Voltages are present at various locations within the server whenever an AC power source is connected. This voltage is present even when the main power switch is in the off position. Failure to observe this warning can result in personal injury or damage to equipment. CAUTION: Observe all ESD safety precautions before attempting this procedure. Failure to follow ESD safety precautions can result in damage to the server. Supported DIMM Sizes Supported DIMM sizes are as follows: • 256 MB • 512 MB • 1 GB • 2 GB) • 4 GB (HP 9000 rp3440 only). If 4 GB DIMMs are used, only one configuration (8 X 4 GB in the first eight sockets) is supported. Dissimilar DIMM sizes can be used across the entire system board (except when 4 GB DIMMs are used) but both DIMMs in a pair (first group of four, connectors 0A and 0B of HP 9000 rp3410) and all four DIMMs of any quad must be identical. 70 Installing the System