Chapter 11: Solving Problems ● 140Forcing a Logical Drive with Multiple Drive Failures Back OnlineIf multiple disk drives fail in the same logical drive, you may be able to recover the data byforcing the logical drive back online. For instance, if two drives fail in a RAID 5, forcing itonline may allow you to access the data, depending on which disk drives failed.Caution: This procedure is not guaranteed to successfully recover your logical drive. Thepreferred and surest way to recover your data is to restore the failed logical drive from backup.Before using this procedure, check all connectors (cables, power, and so on), then try restoringthe logical drive by performing a bus rescan or restarting the server.To force a logical drive online:1 In the Logical Devices View, select the failed logical drive.2 In the menu bar, select Actions, then click Force online.3 Click Yes to confirm, then click OK.4 If Adaptec Storage Manager successfully forces the logical drive online, check it for dataand file system integrity. If some disks are still missing from the logical drive, reinsert orreplace them and allow Adaptec Storage Manager to rebuild the logical drive. Then verifythat drive status has returned to Optimal.Note: If the operation fails, follow the on-screen prompts to try the Advanced options forforcing the logical drive online. Only expert users should try the Advanced options.Removing a Failed Disk Drive’s IconNote: You can only complete this task on disk drives that are not included in any logical drive.When a disk drive fails, it may still appear in Adaptec Storage Manager although it is no longeravailable. To see an accurate representation of your storage space and make it easier to monitoryour disk drives, you can remove a failed disk drive from the Physical Devices View.In the Physical Devices View, right-click the failed disk drive, then click Remove failed drive.Rebuilding Logical DrivesA hot-swap rebuild occurs when a controller detects that a failed disk drive in a logical drive hasbeen removed and then reinserted.To start a hot-swap rebuild:1 Following manufacturer’s instructions, gently pull the failed disk drive from the serverwithout fully removing it, then wait for it to spin down fully before continuing.2 If there is nothing wrong with the disk drive, reinstall it, following manufacturer’sinstructions.If necessary, replace the failed disk drive with a new disk drive of equal or larger size.3 The controller detects the reinserted (or new) disk drive and begins to rebuild the logicaldrive.
