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ReadyNAS NV+ v2 - hdd freezes and lost connection
Hi Community
I have a ReadyNAS NV+ v2 with each bay filled with 2TB WD HDD. I have just come across a situation wherein the NAS or my shared folders are no more visible [IP connectivity is ther...
The capacity rule for XRAID is "sum the disks and subtract the largest". That's the best that can be done - it's impossible to do better and still provide single redundancy. So as bedlam1 says you need to upgrade two drives to gain space.
I'm not 100% certain, but I believe the expansion limits in the ReadyNAS Pro/Ultra also apply to the v2. Those limits are
- a volume cannot expand over the 16 TiB size ceiling
- a volume cannot expand more that 8 TiB from it's starting point.
An example of the second limit: Let's say your last factory install started with a single 2 TB drive, and you then added the others. Your starting point would be 2 TB (1.73 TiB). Your upgrade ceiling would be 10.73 TiB. You can expand to 2 TB + 3x4TB (10 TB volume size). But if you try to upgrade the final drive to 4 TB you'd exceed the ceiling (12 TB -> 10.9 TiB). So that upgrade would fail.
It's not possible for you to hit either limit in this upgrade, (since your total volume size will be 8 TB), but you might keep it in mind if you expand further. If you were to hit the second limit, the only workaround is to do a factory reset and restore the data from backup.
Thanks Stephen for your suggestions.
The free space currently sits exactly at 10% and as soon as it goes <10%, the performance deteriorates which confirms your theory on this.
I have already upgraded the NAS to 5.3.13 and the health of my current HDD is all good.
I'm planning to introduce a 4TB HDD into the 4th bay to increase overall capacity.
Is there a calculator or method I can use to calculate the space I will be getting because currently I get approx 6TB with 4x 2TB HDDs in the NAS. So by introducing 4TB in 4th bay how much space would I finally have - guessing probably 8TB.
Thanks
The capacity rule for XRAID is "sum the disks and subtract the largest". That's the best that can be done - it's impossible to do better and still provide single redundancy. So as bedlam1 says you need to upgrade two drives to gain space.
I'm not 100% certain, but I believe the expansion limits in the ReadyNAS Pro/Ultra also apply to the v2. Those limits are
- a volume cannot expand over the 16 TiB size ceiling
- a volume cannot expand more that 8 TiB from it's starting point.
An example of the second limit: Let's say your last factory install started with a single 2 TB drive, and you then added the others. Your starting point would be 2 TB (1.73 TiB). Your upgrade ceiling would be 10.73 TiB. You can expand to 2 TB + 3x4TB (10 TB volume size). But if you try to upgrade the final drive to 4 TB you'd exceed the ceiling (12 TB -> 10.9 TiB). So that upgrade would fail.
It's not possible for you to hit either limit in this upgrade, (since your total volume size will be 8 TB), but you might keep it in mind if you expand further. If you were to hit the second limit, the only workaround is to do a factory reset and restore the data from backup.
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