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Forum Discussion
Pro 6 not expanding with 6TB drive swap
I've got a ReadyNAS Pro 6 populated with 6 x 3TB hard drives. I'm at max capacity so I swapped out one of the drives with a new 6TB model.
The Volume successfully repaired itself, but RAIDiator (4.2.27) is reporting that it has only allocated 2790 GB of the 6TB drive, the same amount as the physically smaller drives. It didn't appear to make any attempt to Expand the volume after the Repair process completed, and I rebooted a couple of times.
I don't believe I've hit the max allowable capacity of this model because I have a second Pro 6 populated with 6 x 4TB drives drives (18TB usable), and this one was 6 x 3TB drives (13TB usable).
Questions:
1) Would the Volume expand if I did a Factory Reset and rebuilt the Volume from scratch? (I have the data backed up but of course it would take several days straight to copy that much data back on to a fresh Volume.)
2) Did the Volume not expand because the other drives are 2790 GB, and the new 6 TB (5589 GB) got limited to 2790 GB to keep size parity with the other drives for redundancy protection? Would the Volume properly expand if I added a second 6 TB drive to the array?
Thanks,
R
The Volume successfully repaired itself, but RAIDiator (4.2.27) is reporting that it has only allocated 2790 GB of the 6TB drive, the same amount as the physically smaller drives. It didn't appear to make any attempt to Expand the volume after the Repair process completed, and I rebooted a couple of times.
I don't believe I've hit the max allowable capacity of this model because I have a second Pro 6 populated with 6 x 4TB drives drives (18TB usable), and this one was 6 x 3TB drives (13TB usable).
Questions:
1) Would the Volume expand if I did a Factory Reset and rebuilt the Volume from scratch? (I have the data backed up but of course it would take several days straight to copy that much data back on to a fresh Volume.)
2) Did the Volume not expand because the other drives are 2790 GB, and the new 6 TB (5589 GB) got limited to 2790 GB to keep size parity with the other drives for redundancy protection? Would the Volume properly expand if I added a second 6 TB drive to the array?
Thanks,
R
1 Reply
Replies have been turned off for this discussion
- First of all, you won't see any expansion with xraid/raid-5 until you install two drives of the larger capacity.
Second of all, the expansion limits of 4.2.x are a bit more complicated than you are thinking.
(a) installing 6x4TB (or even 6x6TB) and doing a factory default will work ok.
(b) Installing 2x6TB+4x3TB and doing a factory reset will not work ok. The issue is that a volume cannot expand over the 16 TiB threshold, and in this case xraid first sets up a 6x3TB and then tries to expand. (This config has a 16.37 TiB volume size - slightly over the limit). Replacing two 3 TB drives with 6 TB models will similarly fail to expand.
(c) A volume cannot expand more than 8 TiB larger than its starting point (initial install or last factory reset).
So you might well be at an expansion limit on this pro. And mixed drive sizes are limited to a 16 TiB volume.
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