1. Collect and store information about the S5300 device and export the DB.
2. Log in to MML, open BST function, enable bad track mark function, input bst enable 1 (1 is open, 2 is closed, 3 is for viewing).
3. Determine the first failed disk from the alarm information, and the RAID group degradation and failure time points.
4. Pull out the faulty disk to make the RAID group invalid.
5. Insert the other disk except the one that failed first.
6. Enter the mml of the master and enter the following command revive to insert the disk revive disk 3,3 Note: If the raid group is in the degraded state (showrg view RAID group status), revive raidlun 4 Note: Restore all the RAID groups LUN.
7. Remind users to back up data.
8. Replace the uninserted disk and wait for the automatic rebuild to complete.
