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[jamieburchell]

If you have a disk fail and you replace it with a larger disk, the system will create the exact size partition used in the original array on the new disk, and the remaining space will be unavailable until you reformat the disks or get creative with linux.

The same thing will happen if you swap the disks one by one and allow a rebuild - you will end up with a RAID array of the original size and have no access to the remaining space on the two disks.

Ahh, I see. That makes sense. Thanks for clarifying that

[jswayze]

No it's not,that is for standard volumes (NO RAID) only - the procedure for RAID was provided in an earlier response.  There are other ways, this one is the easiest.

Thanks for the response, but sorry I'm still a bit confused. Unless you're referring to a previous thread, it seems as though none of the previous posters had a RAID 1 setup (but one wanted to move to one.)

Here's what I've intuited so far: If I simply remove one of my 500GB drives, stick it in a PC and copy the contents over to each of the two new 1.5TB drives, I can remove the other 500GB drive and insert both new 1.5TB drives.

If this is correct, great - it shouldn't be a problem. But doesn't the 323 need to format the volumes first?

Again, thanks for the help.

[fordem]

jswayze...

You quoted ECF's post and asked if the procedure was "correct" for RAID1 - and I responded in the negative, that procedure will only work for standard volumes - the procedure you outlined, which is essentially a slightly modified version of ECF's post will NOT work, for reasons that I have already covered.

The "new" procedure that you have "intuited" will also NOT work for RAID1 - I have already provided the "easest" way to upgrade a RAID1 array to larger disks.

[gunrunnerjohn]

I did a similar upgrade, I replaced two 500gig disks with two 1.5TB disks.  I could see no way except to copy all the data back after the disk upgrade.  In my case, I have a DNS-323 and a DNS-321, both with 1.5TB drives in RAID-1.  I copied all the data to the second box (it was new and empty), installed the larger disks, and copied it back.  There didn't seem to be any shortcut.

It take a long time to copy 800gb of data.