Unplugged NAS w/ RAID 1, Help Repairing Storage Pool

I’m hoping someone with more technical knowledge can help with my issue. my Ugreen NAS got briefly unplugged during use. I have about 4.5 TB of data on one drive with a RAID 1 backup on the second drive.

When the NAS got turned back on, I got an alert that my storage pool is degraded even though both of my drives are fine. It is telling me to repair my storage pool via Hard Drive 1. However, when I tell my drive to begin the repair storage pool function, it attempts before saying my request has timed out and to try again.

Does anyone know how I get the “Repair Storage Pool” task to actually run? I’m a little freaked out, because I don’t want to lose all my data. Please respond if you know what’s up!

Tagged: RAID

Raid data recovery

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Viewing 4 replies - 1 through 4 (of 4 total)

mageb

Participant

April 28, 2026 at 8:52 am

This kind of issue is pretty common after an improper shutdown. The NAS might be stuck trying to sync but failing due to a timeout setting or system load. If your Ugreen NAS has an option to stop the current task or restart RAID management services, try that before re-initiating the repair.

wepekit

Participant

April 28, 2026 at 8:46 am

Since it’s RAID 1, your data should still be safe on at least one drive. If you’re nervous, the safest move is to back up the accessible data first before doing anything else. After that, you can retry the repair or even remove and re-add the secondary drive to force a rebuild.

dotoson

Participant

April 28, 2026 at 8:45 am

<p data-start=”381″ data-end=”682″>If the repair task keeps timing out, it could be because one of the drives is responding slowly or hitting read errors. Even if SMART shows “healthy,” the disk might still be struggling. I’d suggest running a full SMART extended test on both drives before attempting the repair again.</p>

Jace Elric

Participant

April 28, 2026 at 8:43 am

A sudden power cut can definitely cause a RAID 1 array to go into a degraded state even if both drives are physically fine. It’s often a sync or metadata issue rather than actual disk failure. Before retrying the repair, try rebooting the NAS again and check system logs to see why the rebuild is timing out.

Viewing 4 replies - 1 through 4 (of 4 total)