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[bheil123]

I have both a DNS-323 (1.08) and bought a new DNS-321 (1.03)

Was trying to 'clone' a working RAID-1 pair from the DNS323 over to the 321.
Have 2 pair of identical 2TB WD drives.

I removed on drive from the 323 (simulating a failure), installed a new blank drive in the 323 and it is back online and working fine.

I took the drive I removed from the right slot of the 323, moved to 321.  The 321 functioned fine (I could see all the data on the 'degraded' raid1 array.

I then repeated this process with the left drives.  Took the left drive from the 323, inserted a new drive and the 323 again rebuilt itself.   

I now have both drives from the orginal 323 ready to install in the 321.  I installed them (skipping the formatting step), and the 321 went to work repairing the 'degraded array'.   Not sure why it needed to do anything, since they were orginally a paired array in the 323.  This took several hours and completed.  I rebooted the 321, and it repeated the repair a second time.   After it complete, the raid 1 volume shows as working fine, and i can access all the data.   

Now the problem.   Every time I access the web server page on the 321, it asks me if i want to format the newly installed drives.   If I press 'skip', all is well and I can continue any function properly.   I am nervous to leave the unit this way, one of these days I might accidentally press continue, and watch the drive pair get wiped out.

Any ideas what is going on here?

[gunrunnerjohn]

Did you remember that left is right and right is left for the DNS-321 vs. the DNS-323?  If you took a drive out of the left slot of the DNS-323, it should have gone into the right slot of the DNS-321.

[mig]

Since we can't see the code for the scripts D-Link produced for RAID1 setup,
no one really know if it matters which slot the drives are in.  Some posters have had success
with setup of RAID1 with existing disks, others end up with two reformatted drives with no data
on them.  Unless a backup was made prior to the RAID1 setup, you could be left wonder why your
data drive was formatted -- EVEN when the web gui said it would not delete your existing data.

The safest way get the data from the DNS-323 RAID1 to the DNS-321 RAID1 is just to copy 
your data from the DNS-323 to the DNS-321.
1) leave the orig disk at RAID1 on the DNS-323
1) setup your new disks to RAID1 on the DNS-321, according to the web admin console
2) copy your data from the DNS-323 to the DNS-321

[gunrunnerjohn]

All of that is true. 

I have actually successfully done what was described, but my first attempt I put them into the same slots.  Silly me, I didn't realize the DNS-321 thought left was right!  I wanted to format the disks, but I refused.  I swapped them around and it was happy.

[bheil123]

Didn't know about the left and right swap.  I am recreating the 'clone' again using this advice.  Will post after I complete the test.

[bheil123]

I took the right drive from a raid-1 volume in a 323 and just installed it in a 321 left slot.

When I reboot the unit, I get presented with :

Select a RAID type screen:
 - standard is selected

Other options are 'greyed' out... 
If I 'skip' I can continue to work successfully

Data looks fine etc.
Somehow the 321 doesn't understand this is a correctly formatted but 'degraded' volume.

Should I reset to factory defaults?  Can a factory defaulted device figure out if a newly inserted drive is infact correctly formatted 1/2 of a RAID-1 volume?

[gunrunnerjohn]

I've reset mine to factory defaults and it had no problem recognizing the disks or the data.

[bheil123]

I swapped drives, reset to factory default - no luck.
Good news is the raid-1 volume works fine and retains data,
lingering problem is the 321 box somehow knows that these were not drives formatted by the box itself.

[gunrunnerjohn]

I'd save the data on a backup and reformat the drives.