Chapter 3: Maintenance38 Avaya CMS Dell R720 and R620 Computer Hardware Installation October 2015Maintaining disk drivesThis section includes the following topics:● Prerequisites on page 38● Required references on page 38● Replacing a disk drive on page 38PrerequisitesIf possible, do a CMSADM backup before you add or replace a disk drive. See your CMSSoftware Installation, Maintenance, and Troubleshooting document for this procedure.Required referencesThe following references are required when doing procedures in this section:● The CMS Software Installation, Maintenance, and Troubleshooting document for yourCMS release.● Dell PowerEdge™ R720 Server and Dell PowerEdge™ R620 Server at the Delldocumentation Web site:http://www.dell.comReplacing a disk driveThis procedure describes how to replace a disk drive.To remove a disk drive:Note:Note: This procedure should be followed multiple times if replacing multiple disk drives.1. Dell SAS disks are hot-swappable. However, if the customer has the LOW system, it onlyhas one disk. So you cannot apply hot-swapping to LOW systems. Follow the instructionsin Software Installation, Maintenance, and Troubleshooting for your version of CMS tocomplete the procedures before removal of the disk.2. Locate the disk drive to be removed. A map of drive locations is located on the front rightside of the system.3. Press the drive button to release the drive latch.