IBM System x3250 Installation Manual

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

Contents

Removing the coverTo remove the cover, complete the following steps:1. Read the safety information that begins on page v and “Installation guidelines”on page 7.2. Turn off the server and all attached devices.3. Disconnect all external cables and power cords.Cover-releasebutton4. Press the cover-release button.5. Slide the cover back approximately 1.27 cm (0.5 inches); then, lift it off theserver.Attention: For proper cooling and airflow, replace the cover before turning on theserver. Operating the server for extended periods of time (more than 30 minutes)with the cover removed might damage server components.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 installingDIMMs: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 26).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, it must be installed 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 inChapter 2. Installing optional devices 9