I tried to be a careful steward of my digital assets. A UPS and a Seagate 2 TB NAS running in RAID 0 (mirrored) mode to protect my important assets. Idaho Power had a different idea. Two extended power outages in the last month. First was 1 hour 21 minutes. Wiped out the battery on the upstairs network equipment UPS. I have purchased a replacement. 2nd one went 2 hours 53 minutes last Friday. I tried to properly shutdown the NAS when it was clear the power was going to be down longer than the UPS would support. The NAS would not shutdown. When power returned, I discovered BOTH disks in the mirror were unresponsive. Seagate will honor the 3 year warranty with a full replacement of the disks and enclosure. That leaves me with a substantial "recovery fee" to have their data recovery lab get my data back. Not a happy camper.
Incredible that a couple of power failures can do that much damage.
Not so many years ago the only damage might be to the food in the freezer.:-)
.
Crazy as it sounds, backing up your nas is recommended by nas manufacturers. Yes, backing up your backup lol. Backup to a HDD that is usually powered down and preferably stored in a safe.
On top of that consumer level off-the-shelf units from Seagate, WD etc, have mediocre reliability records. I’m talking the ones in a plastic case. Good nas (semi-commercial grade) is an expensive game, which still holds possibility of failure just when you need it.
Same can be said for consumer level UPS products. They don’t always filter power spikes before a brownout/blackout, or especially during power restoration.