QNAP NAS Community Forum

Qnap TS-210 Turbo NAS - Help needed to add new disk to degraded raid.

I had a disk issue with "Disk 1" of a 2 disk RAID1 volume. I ordered and replaced the faulty disk. The device now boots and shows the "Mirrored disk volume" as in a degraded state. The new drive shows up under "Physical Disks" but there is no option to add this disk to the degraded volume, either through "Volume management" or "RAID Management" in the UI.

I've tried connecting via SSH/Putty however I'm not sure how to prepare the new disk and add it as a spare in /dev/md0.

Any help appriecatted.

EDIT: The degraded volume is running from the original Disk 2, disk 1 has been replaced with a new (identical model) disk. I've considered swapping the original disk 2 to the disk 1 bay and adding the replacement disk in the disk 2 slot.... however this seems counter intuitive and against everything i've ever done on an Enterprise raid Don't want to loose my data!

those units are a pain, because they don't have hot swappable drive bays.

in order for the NAS to add the drive to the RAID1 it needs to be hotswapped (not shutdown)

try to remove the drive and format it (drive dock and computer) then reinsert it and it might get added to the RAID

To be clear, with the unit open, power it up with the new disk disconnected and once booted, slide the new disk in? That sounds fine in theory but in practice, the fact that the unit doesn't seem to be designed with that in mind I have great concerns as to what may happen if it's not designed to be "hot-swappable". I learned that lesson once unplugging a LPT: port that fried a motherboard

Is there another option involving SSH?

If someone at QNAP could confirm dolbyman's suggestion?

QNAP doesn't come here (besides presales) .. so no need to ask them (unless you open a ticket with their support website)

btw SATA connectors are designed for hotplugging , you can see the (dis)connect sequence on the drive connector

Now that the RAID is degraded, format the drive and cold swap it (as I suggested) ..see if that works

Ok i'll try the format + cold swap now - Just any old windows file system?

anything is fine, as it will be formatted again by the qnap

So formatted drive, replaced it in the Qnap and it did what it did before, disk formatted and ready but no options to add the disk to the raid volume and nothing happening automatically.

Should I know try a "Hot Swap" ?

you can try a hotswap (make sure you delete it again before you try)

otherwise time to open a ticket with qnap

So blanked/formatted disk, started up with only disk 2 (original) and new disk 1 sitting but not plugged into slot 1. Started up, logged into Web UI, slotted in disk 1 - same again, disk takes a little time then shows up as "Ready" but no options to add disk or do anything..... support time i take it?

support is your best bet then .. ya