If Linux NAS has damaged HDD, what can we do to replace HDD?
Don’t worry! If Linux NAS is under RAID 1, 5, 10 modes, and encounter single hard drive display [Warning] status or the RAID mode display [Downgrade] status.
You can use PDM [Space Management> Create hot spare] function, then you can replace damaged hard drive and restore all the storage space.
For more details, please refer to the following introduction!
Review HDD Status
When we log in to PDM, if there’s a damaged hard drive, you will see the HDD status display [Warning] sign.
Then we have to replace that abnormal hard drive. Please go to [Settings> HDD Management> Space Management] and you should see the hard drives status and information.
Then, prepare a hard drive you want to replace, this hard drive’s capacity should be larger or equal to the smallest member capacity in RAID.
Click [Eject] to eject the hard drive display [Warning].
(Note: The replace hard drive do not need brand new one, but it cannot be the other RAID’s member. So we suggested user should format that hard drive before replacement).
Confirm that damaged hard drive has ejected and the storage space status should display [Downgrade]. Take out that damaged hard drive and replace to the new hard drive, then click [Rescan Space].
After rescanning process completed, click [Create] hot spare and choose the hard drive we just put in and click [Confirm].
(Note: If PDM cannot detect the new hard drive, please reload the page and click [Rescan Space] again then click [Create] hot spare).
After hot spare process completed, the storage space status will change to [Rebuild], then we only need to wait for the rebuilding process complete.
(Note: During the rebuilding process, please do not take the hard drive out or turn off NAS power).
Completed rebuild process and you should see the RAID status changes to [Good], and all the HDD status is displaying [Good] too, this means we already replace the damaged hard drive and restore the storage space completely.