Removed — Indicates that the controller cannot communicate with the disk. This state may occur when the disk was part of a virtual disk but has lost communication with the controller. A user may have removed the disk or it may have lost power. A disk that is in Removed state will no longer be displayed by Array Manager after a system reboot or stopping and restarting the Array Manager service.

Does that imply that once a disk is removed it will never be displayed again, even after the state has changed?  Seems highly unlikely, and if it is the case, then I would claim that the management software is downright bad.

If the state goes from removed to another state, I would expect that (especially) after a reboot or service restart the management software would recognize that change and display the correct state of the disks on the array.

What I read here is that if a disk is in a removed state when the management software starts, then it won't display that disk until it's replaced and the management service restarted.  If nothing else, reslotting or replacing the drive should correct the amber light on the enclosure.

Yep, you're probably right. 

Reslotted Drive 0, did not boot up. Waited overnight in vain hope the drive was being rebuild. Remove drive, now boots OK. Is drive beyond hope?

 

 

You can go to most hard drive manufacturer websites and download diagnostics utilities.  I would run some diagnostics on the hard drive just to verify if something is wrong with it.

Yep, try a low level format and then hopefully it will rebuild.

Tested Ok, Where do I go from here. Should I format it and put the drive back into the NAS?

 

Ron

How do I get the formated disk to rebuild and the missing disk deleted. It now shows this:

0 Empty (Formattted)

1 Data

2 Data

3 Data

Missing Disk

Ron