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getting degraded message on Nas display
Hello I have RN31400 – ReadyNAS 300 Series 4 The power to the building went off yesterday and when we went to reboot the Nas I am now getting a degraded message on the front of the NAS. Does anyo...
brade wrote:
Could this mean one of the hard drives has failed and that is causing the message?
The degraded message means one drive has dropped out of the array. You''ve lost RAID redundancy, so if another drive drops out for any reason the volume will fail, and you will lost all the files.
If the drive is no longer detected, then of course it will not resync, so the array will not become redundant again on its own.
The logs will give some better clues on what is going on. It is possible that the drive failed. But there are some other possibilities:
- the bay the drive is in might have failed
- The disk driver might have taken down the SATA interface for that bay for some (unknown) reason.
- ???
Which is why I suggested downloading and examining the logs. There is a lot more information in them than you will see in the admin web ui.
You should confirm that the drive that is grayed out is actually the one that is no longer in the array. Once that is confirmed, you can remove it (keeping the NAS running) and test the disk in a Windows PC using vendor tools (WDC's dashboard software, or Seagate's Seatools).
Note that if you for any reason pull out the wrong drive, the volume will fail immediately.
Thanks Stephen
In that graphic it only showing me 3 of the 4 harddrives. There is no syncing message. Could this mean one of the hard drives has failed and that is causing the message?
brade wrote:
Could this mean one of the hard drives has failed and that is causing the message?
The degraded message means one drive has dropped out of the array. You''ve lost RAID redundancy, so if another drive drops out for any reason the volume will fail, and you will lost all the files.
If the drive is no longer detected, then of course it will not resync, so the array will not become redundant again on its own.
The logs will give some better clues on what is going on. It is possible that the drive failed. But there are some other possibilities:
- the bay the drive is in might have failed
- The disk driver might have taken down the SATA interface for that bay for some (unknown) reason.
- ???
Which is why I suggested downloading and examining the logs. There is a lot more information in them than you will see in the admin web ui.
You should confirm that the drive that is grayed out is actually the one that is no longer in the array. Once that is confirmed, you can remove it (keeping the NAS running) and test the disk in a Windows PC using vendor tools (WDC's dashboard software, or Seagate's Seatools).
Note that if you for any reason pull out the wrong drive, the volume will fail immediately.
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