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Forum Discussion
4TB hard disks
It is early days yet but 4TB disks are starting to trickle on to the market. I am aware so far of two different makes being launched they being Seagate and Hitachi. Hitachi at least have now made a ki...
Emlcombo wrote:
You are saying that b/c of the expansion limitations (which is 8tb), that if you start out with 5x4tb drives and then try to increase that to 6x4tb drives later, you will only have a total of 14(ish)tb worth or usable space.
Yes. Expansion would fail. You should select to migrate to dual-redundancy under Volumes in Frontview before adding the sixth disk
Emlcombo wrote:
Which would leave you with RAID 5 with 2 Parity disks?
No. The parity is distributed amongst all disks. RAID-5 is single-redundant. RAID-6 is dual-redudant. Have a read up on RAID levels (you can google search for it)
Emlcombo wrote:
But if you want to start out with 18(ish)tb of usable space with 1 Parity disk then you need start out with all 6 disk in place?
Yes
The new ReadyNAS OS models don't have these limitations but due to the different filesystem you couldn't simply move your disks across to a new device. You would have to transfer your data across your network.
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