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Bigger RAID1
rn314 + os 6.9.1 + 4tb drives in two raid1 Is increasing raid1 easy as pulling a disk, putting in a bigger one, let it rebuild, then do the other? if not can you share the steps?
stevenestrada wrote:
I was figuring the new 6tb woukd rightsize iself to 4tb, and over and over and over.
So that's not the case?
When you upgrade the first 4 TB drive to 6 TB, the NAS will resync that drive. The volume size will be the same as it is now - the extra space is wasted.
After the resync completes, you upgrade the second drive to 6 TB. First the drive will sync. After a reboot, the system will create a new 2 TB RAID group to fully use the drive capacities. That new RAID group will be added to your existing volume (so you will just see an increase from 4 to 6 TB).
But if you simply added the two 6 TB drives to the RN314 (2x4TB+2x6TB) you'd have gotten a 14 TB volume. If the 4 TB drives are healthy, you might consider that.
FWIW, Sandshark missed that you were planning to upgrade both drives.
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stevenestrada wrote:
rn314 + os 6.9.1 + 4tb drives in two raid1 Is increasing raid1 easy as pulling a disk, putting in a bigger one, let it rebuild, then do the other?It is that easy.
Though if the other bays are empty, it would be more cost effective to add a third drive to the array (which will convert to RAID-5).
I was figuring the new 6tb woukd rightsize iself to 4tb, and over and over and over.
So that's not the case?
I don't really understand the "what you figured" part regarding "rightsizing", but you mentioned a 6TB drive. With XRAID/RAID1, replacing one of the two 4TB drives with a 6TB does nothing with respect to usable space. 4TB of it will be used and 2TB will be wasted. If you replace the second one with another 6TB, then you'll have 6TB of redundant space. On the other hand, if you add a 6TB in an empty slot, you'll switch to XRAID/RAID5 and have 8TB of useful space and 2TB unused. If you add another 6TB, then you'll see the full effect of that last 6TB for 14TB total. You can see the end results here: Netgear RAID Calculator. Be careful, though, because some of the end results can't be arrived at via expansion. For example, you cannot add smaller drives to an array. If your array already consisted of the 6TB's, you couldn't add the 4TB's to that volume, but the calculator will show the same result as adding 6TB's to the 4TB's, which does work.
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