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Expanding RAID - failing
Dear Community. We have begun expanding the volume from 1.8 TB with three 1TB drives running in RAID X2. We purchased 3 x 4TB drives. The first 2 added just fine. Taking us to 6.4TB. I am tr...
peteophoven wrote:
We started the volume with 3 X 1 TB drives.
OK. That's the same volume size as a single 2 TB drive (except you have redundancy).
Because your starting point was 1.8 TiB, your volume expansion ceiling is 9.8 TiB.
3x1TB + 3x4TB would give you a volume size of 11 TB (or 10 TiB),
The last drive expansion still fails because it would take you over your expansion ceiling (just barely, but still over).
Reformatting the drive won't overcome that. As I said above, you either need to do off-line expansion with ssh, or do a factory reset and restore the data from backup.
If you do a factory reset, you can switch to OS-6. Though not supported by Netgear, it doesn't have any known expansion limits.
We started the volume with 3 X 1 TB drives.
The volume was around 1800 GB.
We added a 4TB
and then another 4 TB to get us to where we are now - 6400 GB.
Its this last drive that isn't playing nicely.
I fear having to take the drive offline and reformat. It will be difficult to pull that off.
Highly utilized and maintained production server.
Thanks for your help.
peteophoven wrote:
We started the volume with 3 X 1 TB drives.
OK. That's the same volume size as a single 2 TB drive (except you have redundancy).
Because your starting point was 1.8 TiB, your volume expansion ceiling is 9.8 TiB.
3x1TB + 3x4TB would give you a volume size of 11 TB (or 10 TiB),
The last drive expansion still fails because it would take you over your expansion ceiling (just barely, but still over).
Reformatting the drive won't overcome that. As I said above, you either need to do off-line expansion with ssh, or do a factory reset and restore the data from backup.
If you do a factory reset, you can switch to OS-6. Though not supported by Netgear, it doesn't have any known expansion limits.
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