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Forum Discussion
XRAID2 calculator
We previously had access to an XRAID calculator: http://rdconfigurator.netgear.com/raid/index.html I know the ReadyNAS products are "EOL", but such resources are still useful for those of us with...
I'll actually wipe the current volume - to get rid of ReadyCloud, and I want to reuse two 8TB disks in another NAS.
I will rebuild my RN214 with 2x4TB and 2x6TB, just wanted to understand what capacity that would offer.
I think I'll get:
- 4TB + 4TB + 6TB for data
- 6TB for redundancy
- 0TB unused
- Therefore 14TB (in HD capacity terms), and 12.7TB of usable storage in real terms.
aks-2 wrote:
- Therefore 14TB (in HD capacity terms), and 12.7TB of usable storage in real terms.
14 TB, or 12.7 TiB. Both are "real", just different units for the same storage.
ReadyNAS system report TiB but use TB as the label.
aks-2 wrote:
- 4TB + 4TB + 6TB for data
- 6TB for redundancy
This is the correct capacity. Although if you are thinking that the 6 TB redundancy is all on one disk, then that is incorrect. The parity blocks are distributed across all the disks. If you put all the parity blocks on one disk, then the write speed of that disk becomes a performance bottleneck. Plus distributing the parity blocks evens out the load on the disks in the volume.
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