I have been attempting to follow the manual procedure for relacing a disk to increase capacity, as set out here:

Replacing a disk to increase capacity

 

The procedure works as expected until the step that reads ‘Assign the (larger) replacement drive to the slot previously used for the drive you are upgrading’.

 

At this point the slot/disk ID indicates the old disk is being emulated and the disk is ‘not installed’, while the replacement disk appears in ‘Unassigned Disk Devices’ with options to clear and pre-clear. I do not see any option to assign the replacement disk to the slot it is physically in.

 

The replacement disk has come from a different Unraid server and was previously in use. It still has the original file system and data files.

 

Both parity disks have been successfully upgraded, but using new disks.

 

I’m wondering whether I’m using the correct procedure for this sort of replacement or whether  I’ve missed part of it.

Thanks in advance for any guidance.  

11 minutes ago, PFT1 said:

At this point the slot/disk ID indicates the old disk is being emulated and the disk is ‘not installed’, while the replacement disk appears in ‘Unassigned Disk Devices’ with options to clear and pre-clear. I do not see any option to assign the replacement disk to the slot it is physically in.

Have you stopped the array before trying to assign the replacement disk?   Your description makes it seem you have may have omitted this step as if you had at that point the disk would not be showing as 'emulated' and you would not have the other disk under Unassigned Devices.?   If that is not the case then please post your system's diagnostics zip file after attempting the replacement so we can get a better view of what is going on.

 

Yes. That was the problem. After stopping the array the replacement disk appeared for assignment in its slot and after restart the data-rebuild began.

Simple operator error.

 

Many thanks for your prompt and expert response.