IBM 86625RY Hardware Maintenance Manual - Page 242

Memory modules Adding memory to the server is an easy way to make programs run faster. You can increase the amount of memory in the server by installing options called memory-module kits. Each kit contains one industry-standard, dual-inline memory module (DIMM). The server uses a non-interleaved memory configuration. The server comes with a memory module installed on the memory board in connector J1, the connector nearest the top of the server. Install additional memory modules in connectors J5, J2, J6, J3, J7, J4, and J8, in that order. (See the following illustration for memory connector locations.) If you mix DIMM sizes, install the largest-sized DIMM in connector J1, the next-largest-sized DIMM in connector J5, and so forth. Notes 1. The memory-module kit sizes available for the server are 128 MB, 256 MB, and 512 MB. The server supports a minimum of 128 MB and a maximum of 4 GB of system memory. 2. Install only 3.3 V, 168-pin, 8-byte, registered DIMMs. Only 100 MHz, 72-bit, registered, synchronous, error correcting code (ECC), x4 configuration DIMM memory is supported for the 128 MB, 256 MB, and 512 MB DIMMs. 3. Installing or removing memory modules changes the configuration information in the server. Therefore, after installing or removing a DIMM, you must save the new configuration information in 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 "Configuration/Setup Utility main menu" on page 22 for more information. Refer to the following illustrations of the processor support tray and the processor board while you perform the steps in this procedure. Note For simplicity, the illustrations show only the processor support tray and processor board; you do not need to remove the processor support tray and processor board to install a memory module. 234 Netfinity Server HMM