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ReadyNAS Pro Business Edition Hard Drive Upgrade (2 of 6 Drives still allocated at 2 TB)
I attempted to upgrade my ReadyNAS Pro (Business Edition) NAS from 2TB hard drives to 4 TB hard drives with some success but one issue. The NAS had six 2 TB hard drives installed. I wanted to do...
Your OS 4.2 NAS won't expand a volume over the 16 TiB threshold, and it also won't expand a volume more than 8 TiB over its lifetime.
Going from a volume size of 10 TB to 20 TB exceeds both of those growth limits.
The solution is painful - back up the data, do a factory reset with all drives in place, and then restore the data.
If you go down that path, then consider migrating the NAS to run OS 6. That would let you expand the NAS in the future (there are no known expansion limits with OS 6). If you leave it running OS 4.2, then you won't be able to expand beyond 6x4TB w/o another reset.
Your OS 4.2 NAS won't expand a volume over the 16 TiB threshold, and it also won't expand a volume more than 8 TiB over its lifetime.
Going from a volume size of 10 TB to 20 TB exceeds both of those growth limits.
The solution is painful - back up the data, do a factory reset with all drives in place, and then restore the data.
If you go down that path, then consider migrating the NAS to run OS 6. That would let you expand the NAS in the future (there are no known expansion limits with OS 6). If you leave it running OS 4.2, then you won't be able to expand beyond 6x4TB w/o another reset.
Sure wish I would have known that befor I swapped one drive at a time and then waited for the resync.
That was a pain.
What advantage is there to move to version 6?
Does this version still have no control over fan speed on this unit?
Thanks for the input.
Hi McRob1,
Aside from what StephenB mentioned, OS 6 system offers high-performance disc operations, unlimited snapshots, and advanced data corruption protection, it also introduced new volume maintenance concepts. With regard to fan control, it is still not supported in OS 6.
Hope this helps!
Kind regards,
BrianL
NETGEAR Community Team
McRob1 wrote:
What advantage is there to move to version 6?
In addition to what Brian pointed out, OS 6 doesn't have expansion limits. So you'd be able to further expand the NAS capacity later on.
The downside is that it is not supported by Netgear (though they have fixed issues that users have found here). It will also be somewhat slower (especially on writes). That is the cost of getting the enhanced robustness of the BTRFS file system.
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