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[jimsharky]

So after a power failure, my lovely DNS-343 in a (four, 1.5TB drive) RAID 5 configuration has decided to stop seeing VOLUME_1.

When I power it up, it tells me that VOLUME_1 has been degraded (funny, it can't see the volume but it knows enough to tell me its been degraded.  Go figure).

Any suggestions as to how I might go about retrieving my data?  Any software recovery tools that will let me recover the RAID 5 data?

As if that weren't enough, now I'm seeing that the Seagate 1.5TB drives might also be ****e to flakiness?  Hell at this point, if I can recover the data I'd start over with new drives.

Had great success with the 323s but the 343 has been a colossal POS.

Someone out there care to pay it forward?

[iuliand]

Let the DNS-343 powered and wait. It is very likely that the unit is resynchronizing and volume_1 will reappear. If I remember well there was another case like yours where waiting for 24(?) hours made the volume available again. And for the future buy an UPS.

Regarding the recovery from Raid5, this was briefly discussed in another topic. I'll try to find it for you.
Edit: Found it: http://forums.dlink.com/index.php?topic=6144.msg61493#msg61493 . R-Studio seems to do the job.

PS: Pay attention to the order of the drives. It is good to put labels on them. This is important for recovery.

[jimsharky]

thanks....at least that is SOME cause for optimism.....i def. have the drives in the right order.....no question there.

[melvynadam]

Did this work out? Did simply waiting for a rebuild resolve the problem?

I'm just setting up a RAID5 array and really worried about the fact that I use the sole USB port for a printer not a UPS. I need the printer server function but live in an area with powercuts every 3-4 months. If a single powercut is going to destroy the whole array, I'll have to find another printer server solution.