Replace disk in RAID

[2Drunk2WrkRite]

I had a RAID array setup with 4 1tb disks. I wanted to replace each disk in the array one by one as to not go through the trouble of restarting from scratch but I can't seem to find the option. When I go to the RAID options it looks like it's going to wipe my RAID disks to build a new array but obviously this wouldn't be what I want. Maybe I'm missing some obvious and easy solution here? Thanks.

[Jocko]

Hi

Yes you should be able to replace one by one your disk in the raid if it is not a raid0 (no redundancy) but a raid1

So can you post a screen capture of the "edit volume" menu (when you click on the volume name link from the main disk setup menu)

There is information how to replace a disk in its help page

[2Drunk2WrkRite]

Looks like it doesn't show as a volume...

[2Drunk2WrkRite]

Also, looks like I put this in the wrong place. Was supposed to be the 5big v2

[Jocko]

Hi

So I moved your topic in the right forum.

According with your screen capture, it seems the firmware detects at least a raid on sd[abcd] but not its related volume. I need more information about this point.

First, information how did you build it. Manually or by using the firmware (setup job)?And what actions did you make previously the screen capture ? Did you change the disk order, for example ? I think yes because to have a vol-D on disk-E is amazing.

Now get information on its current state. Please to post all the following output:

Code: Select all

cat /boot.log
gdisk -l /dev/sda
gdisk -l /dev/sdb
gdisk -l /dev/sdc
gdisk -l /dev/sdd

mount

cat /proc/mdstat
cat /etc/mdadm.conf
file -bs /dev/md0
mdadm --examine /dev/sd[abcd]8


[2Drunk2WrkRite]

I didn't realize the position of the disks would matter... I went ahead and re-installed the firmware on the disks I actually wanted. Thank you for your help and for running this site. I'm really happy to have an alternative to the original firmware that came with this.

[Jocko]

Hi

Indeed with a raid we have to keep the disk order as the one used to build it : the raid can not be assembled without it. It is why the volume was missing. On nas booting, the firmware failed to assemble it and there was no raid device.