Hi All-

 

I want to remove one of the TB drives that I'm selling to a friend. (Disk 13)

I've moved the data over to an external and deleted the data from disk13 in unRAID.

I have unassigned the drive, but what do I do now for the space to show up without it saying Disk missing?

I'm sure it's an easy process, but I don't want to lose any of the data from the other 11 drives.

 

Thanks for any help!

Hi All-

 

I want to remove one of the TB drives that I'm selling to a friend. (Disk 13)

I've moved the data over to an external and deleted the data from disk13 in unRAID.

I have unassigned the drive, but what do I do now for the space to show up without it saying Disk missing?

I'm sure it's an easy process, but I don't want to lose any of the data from the other 11 drives.

 

Thanks for any help!

Stop the array

Un-assign the drive on the devices page

Go back to the main page and check the checkbox under the "Restore" button.

Press the "Restore" button. Parity will be calculated on the remaining drives.  (It is not labeled very well, it actually saves a new configuration based on the currently assigned and working drives.  It does not "restore" anything)

Please note that there is no way to remove a disk from the array without losing your parity protection for a while.  After you press the restore button, parity will be invalidated.  When you start the array, parity will be recalculated.  When it is done, parity protection will be in force again.

 

(I say there is no way, but there actually is a way.  It is pretty involved and time consuming though.  The process Joe L. communicated will get the disk out of the machine much quicker.)

 

For anyone interested in removing a disk, I would suggest doing a full parity check the night before to ensure that you don't have bad sectors that would make rebuilding parity problematic.  (The parity check will actually correct (remap) bad sectors if it finds any.)

This worked perfectly!

Thanks again (I'm always a little worried about the restore button)

... and to complete this thread, for future readers, here's the FAQ entry for this question.  It includes a link to a special procedure developed by our very own Brian, and hinted at above, that allows removal of a drive while protecting the parity info.  Although this procedure is dangerous, with a number of steps that must be carefully taken, it is extremely well described, step by step, with a complete pictorial guide.