IBM System x3250 User Manual

Also see for System x3250: Installation and user guide Installation guide Specifications Problem determination and service guide

Contents

4. Attach the drive retention clip to the side of the drive.5. Slide the drive into the CD/DVD drive bay until the drive clicks into place.If you have other devices to install or remove, do so now. Otherwise, go to“Completing the installation” on page 32.Installing a memory moduleThe following notes describe the types of dual inline memory modules (DIMMs) thatthe server supports and other information that you must consider when you installDIMMs:v The server supports 512 MB, 1 GB, and 2 GB DIMMs, for a maximum of 8 GB ofsystem memory. See http://www.ibm.com/servers/eserver/serverproven/compat/us/ for a list of memory modules that you can use with the server.v The amount of usable memory will be reduced depending on the systemconfiguration. A certain amount of memory must be reserved for systemresources. Use the system summary in the Configuration/Setup Utility program toview the total amount of installed memory and the amount of configured memory(see “Using the Configuration/Setup Utility program” on page 38).v The server comes with one 512 MB DIMM installed in DIMM connector 1. Somemodels come with a second 512 MB DIMM installed in DIMM connector 3. If oneDIMM is installed, when you install an additional DIMM, you must install it inDIMM connector 3, and it must be the same size, speed, type, and technology asthe DIMM that is installed in DIMM connector 1. You can mix compatible DIMMsfrom various manufacturers. The third and fourth DIMMs must be installed as apair, in DIMM connectors 2 and 4.v If you install a pair of DIMMs in DIMM connectors 2 and 4, they do not have tobe the same size, speed, type, and technology as the DIMMs that are installed inDIMM connectors 1 and 3. However, the size, speed, type, and technology of theDIMMs that you install in DIMM connectors 2 and 4 must match each other.v Install only double-data-rate II (DDR II), PC2-5300, unbuffered synchronousdynamic random-access memory (SDRAM) with error correcting code (ECC)DIMMs. These DIMMs must be compatible with the latest PC2-5300 SDRAMunbuffered DIMM specification.v If you install a pair of 2 GB DIMMs and a pair of other-size DIMMs, the 2 GBDIMMs must be installed as the first pair (in DIMM connectors 1 and 3).v When you restart the server after you add or remove a DIMM, a message isdisplayed indicating that the memory configuration has changed.28 IBM System x3250 Types 4364 and 4365: User’s Guide