Replacing a Hard DriveUse this procedure to replace a failed hard drive.PrerequisitesUse SupportAssist to send diagnostic data to Dell Technical Support Services.About this taskHard drives can be replaced one at a time without shutting down the expansion enclosure.Steps1. Remove the front bezel.A solid amber light appears next to the failed hard drive, indicating that the drive is ready to beremoved.2. Press the release button to open the hard drive carrier release handle.3. Slide the hard drive out until it is free of the hard drive slot.Figure 11. Replacing a Hard Drive1. Hard drive carrier release handle 2. Hard drive indicators3. Hard drive carrier 4. Hard drive slot4. Press the release button on the replacement hard drive to open the hard drive carrier release handle.NOTE: Hold the hard drive by the plastic part of the hard drive carrier or the handle.5. Insert the hard drive carrier into the hard drive slot until the carrier make contact with the backplane.CAUTION: Do not remove the hard drive blanks that are installed in hard drive slots that arenot occupied. The hard drive blanks ensure proper cooling of the expansion enclosure.6. Close the hard drive carrier handle to lock the hard drive in place.NOTE: Allow several seconds for the expansion enclosure to recognize the hard drive anddetermine its status. When the hard drive is functioning properly, the status indicator turnsgreen. In addition, the hard drive indicator turns green in the Dell Storage Client.7. Replace the front bezel.8. In the Dell Storage Client, make sure that the replacement hard drive is recognized and shown as upand running.If the Dell Storage Client informs you that some hard drives are not assigned, see the Dell StorageClient Administrator’s Guide for instructions about managing unassigned hard drives.18 Replacing SC400/SC420 Expansion Enclosure Components