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Need assistance on RAID/drive configuration
Hello all, I am a new user of ReadyNAS as of this weekend and so far love it. I have a question about the drives being used and am hoping someone can point me in the right direction.
There are ...
CrookedLanes wrote:
1. If the default "XRAID" is simply mirrored, why when I check volumes does it says I only have 1TB available? Shouldn't I have 2TB?
if you have 2x1TB mirrored, then both drives have the same content. Writes are done in parallel to both drives. So you only have a 1 TB volume.
CrookedLanes wrote:
2. Say I decide to purchase additional 4TB drives to match speeds and be the same size, do I hot-swap from (A and B) individually one at a time so data gets copied automatically?
If you want to upgrade the two existing drives, then you do need to hot-swap individually and wait for the resync to complete before you add the next. When you do that, the new drive is rebuilt from the remaining drives.
Though you'll probably want to insert the existing 4 TB drive in C (giving you 2 TB), and the second one in D (giving you 6 TB). Then if you upgrade A you'll end up with 9 TB, and finally upgrading B will give you 12 TB.
StephenB,
That is great info, thank you very much for taking the time to explain it!
I have a few more follow up questions and then I should be all set:
1. If the default "XRAID" is simply mirrored, why when I check volumes does it says I only have 1TB available? Shouldn't I have 2TB?
2. Say I decide to purchase additional 4TB drives to match speeds and be the same size, do I hot-swap from (A and B) individually one at a time so data gets copied automatically?
CrookedLanes wrote:
1. If the default "XRAID" is simply mirrored, why when I check volumes does it says I only have 1TB available? Shouldn't I have 2TB?
if you have 2x1TB mirrored, then both drives have the same content. Writes are done in parallel to both drives. So you only have a 1 TB volume.
CrookedLanes wrote:
2. Say I decide to purchase additional 4TB drives to match speeds and be the same size, do I hot-swap from (A and B) individually one at a time so data gets copied automatically?
If you want to upgrade the two existing drives, then you do need to hot-swap individually and wait for the resync to complete before you add the next. When you do that, the new drive is rebuilt from the remaining drives.
Though you'll probably want to insert the existing 4 TB drive in C (giving you 2 TB), and the second one in D (giving you 6 TB). Then if you upgrade A you'll end up with 9 TB, and finally upgrading B will give you 12 TB.
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