10. Firmly press the DIMM straight down into the connector by applying pressureon both ends of the DIMM simultaneously. The retaining clips snap into thelocked position when the DIMM is firmly seated in the connector.Note: If there is a gap between the DIMM and the retaining clips, the DIMMhas not been correctly inserted; open the retaining clips, remove theDIMM, and then reinsert it.If you have other devices to install or remove, do so now. Otherwise, go to“Completing the installation” on page 45.Installing drivesThe following notes describe the type of drives that the server supports and otherinformation that you must consider when you install a drive. For a list of supporteddrives, see http://www.ibm.com/servers/eserver/serverproven/compat/us/.v To confirm that the server supports the drive that you are installing, seehttp://www.ibm.com/systems/info/x86servers/serverproven/compat/us/.v Locate the documentation that comes with the drive and follow those instructionsin addition to the instructions in this chapter.v Make sure that you have all the cables and other equipment that are specified inthe documentation that comes with the drive.v Select the bay in which you want to install the drive.v The server supports one ultra-slim SATA optical drive.v Check the instructions that come with the drive to determine whether you have toset any switches or jumpers on the drive. If you are installing a SATA hard diskdrive, be sure to set the SATA ID for that device.v The server supports four 2.5-inch simple-swap hard disk drives or two 3.5-inchsimple-swap hard drive disk drives.v The electromagnetic interference (EMI) integrity and cooling of the server areprotected by having all bays and PCI and PCI Express slots covered oroccupied. When you install a drive, PCI, or PCI Express adapter, save the EMCshield and filler panel from the bay or PCI adapter or PCI Express adapter slotcover in the event that you later remove the device.Installing a simple-swap hard disk driveSimple-swap hard disk drives are not hot-swappable. Disconnect all power from theserver before you remove or install a simple-swap hard disk drive.To install asimple-swap hard disk drive, complete the following steps.Notes:1. If you have only one hard disk drive, install it in the left drive bay.2. 3TB hard disk drives are not supported in OS 4690.1. Read the safety information that begins on page “Safety” on page vii and“Installation guidelines” on page 25.2. Make sure that the server top cover is in place and fully closed.3. Turn off the server and peripheral devices, and disconnect the power cord andall external cables.4. Remove the filler panel from the bay.5. Install the hard disk drive:v To install a 3.5-inch simple-swap hard disk drive, pull the loops of the drivetray toward each other, and slide the drive into the server until the driveconnects to the backplate. Release the loops of the drive tray.34 IBM System x3250 M4 Type 2583: Installation and User’s Guide