Unfail a Disk92 DD400 Series Restorer User GuideUnfail a DiskTo change a disk status from failed to available, use the disk unfail disk-ID command.Use the command when doing a hot-swap replacement of a failed disk. The new disk in the “failed”slot is seen as failed until it is unfailed.disk unfail disk-IDCheck All DisksTo check that the Data Domain OS and hardware recognize all the disks, use the disk beaconall operation. The operation causes the LED on the right for all disks to flash green. Use the(Control) c key sequence to turn off the operation. Administrative users only.disk beacon allIdentify a Physical Disk in the ChassisThe disk beacon disk-id operation causes the LED on the right for the target disk to flashgreen. Use the (Control) c key sequence to turn off the operation. Administrative users only.disk beacon disk-idFor example, to flash the LED for disk3:# disk beacon disk3Display Disk StatusThe disk show summary operation displays the number of disks in use and failed, the numberof spare disks available, and whether a RAID disk group reconstruction is underway. Note that theRAID portion of the display could show one or more disks as failed while the Operational portionof the display could show all drives as “operating nominally.” A disk can be physically functionaland available, but not currently in use by RAID, possibly because of operator intervention.disk show summaryOn a restorer using external storage, the display shows only the number and state of the LUNsaccessed by the restorer. The remainder of the display is not valid.The display for a restorer using internal disks is similar to the following:# disk show summaryConfiguration: 15 drives presentRAID: 14 drives are “in use”
