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[raz0469]

I'm having some issues with my DNS-323. I've got a couple 1tb Seagate drives in it mirrored. Or so I thought. I've noticed on and off the past couple weeks, after several months of flawless operation, that lately it's been somewhat inconsistent with responsiveness. Sometimes I'll go to listen to an MP3 on the NAS, or just fire up Explorer to locate a file, and it takes a couple seconds up to 20-30 to get a response. Most of the time it works fine, but this is happening more and more frequently.

I noticed that often in these incidents, only the right drive LED would be blinking. So I checked the status of the NAS and noticed that the "sync time remaining" field now reads "degraded", yet the LED for the left drive remains blue. It just never seems to be in use anymore.

What's the simplest way to have the array rebuilt without losing my data? I'm currently doing a backup just in case anything happens, but would prefer to not have to move everything back and forth if I don't have to. Thanks in advance for your help.

[hilaireg]

There's no 'Force Array Synchronization' at this time.  Although you haven't indicated the f/w level you are using, I would suggest running /w 1.05 as earlier versions of the f/w did not fully support HDD's larger than 750GB ... see D-Link support site FAQ's.

I ran into a similar issue on the DNS-343 and the only way I was able to resolve it was to:

- Backup the data
- Remove the EXT3 partitions using an external Disk Management utility; meant having to pull the HDD's out
- Insert the HDD's in opposite bays - forced the DNS to recognize that the HDD signatures were incorrect allowing a reformat to occur


It's not an ideal solution personally (and most certainly not best practice), but a rough work-around until D-Link can address some of these nagging issues which HDD managment - both on the DNS-323 & DNS-343.

Cheers,

[ECF]

The next firmware release will add a feature to resync your RAID if it becomes degraded.

[raz0469]

That's good to hear that you'll be able to resync a mirrored array with the new firmware, because it's a little ridiculous that you have to spend 20-30 hours moving data back and forth because one of the drives dropped out of the array.

I backed everything up over the weekend and recreated the array (didn't need to use any external disk management, simply used the web interface on the device), and so far it seems to be working normally again. And yes I was using the 1.05 firmware.

[fordem]

Every firmware version I've used (from 1.02) has had the ability to resync without transferring data back and forth - simply remove the "failed" drive, wipe it clean of data and partitions and reinsert it, on the next reboot the DNS-323 will prompt you to format the newly inserted drive, once that is completed it prompts for another reboot and then resynchs the array.

[robotico]

right, though I think the OP's original point was to avoid bringing the data down to a single drive. Resynch would retain and adjust, vs. wipe and rewrite. Less risk IMO.