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Forum Discussion
ReadyNAS NV+ v2 disk addition questions
I have an NV+ v2 running a 2TB X-Raid volume over 2 2TB physical disks (so effectively RAID1). One of the disks is failing so I want to do a straight-swap for a new 2GB disk. What is the procedure ...
Hi - it's definitely a V2 (running 5.3.13).
If I expand the existing 2TB X-Raid (2x 2TB physical) with a new physical 4TB disk... how much additional capacity will be created? (I'm assuming not 4TB).
If I choose to go through the re-build route, what is the best way to backup the current x-raid volume. Can this be done directly over the USB port on the unit?
sebbelcher wrote:
If I expand the existing 2TB X-Raid (2x 2TB physical) with a new physical 4TB disk... how much additional capacity will be created? (I'm assuming not 4TB).
The capacity rule is "sum the disks and subtract the largest". So adding a 4 TB drive would expand the volume by 2 TB. Adding another 4 TB drive would expand it by 4 TB.
sebbelcher wrote:
If I choose to go through the re-build route, what is the best way to backup the current x-raid volume. Can this be done directly over the USB port on the unit?
You can use the USB port, or you can back it up over the network (say to a USB drive attached to a PC). I don't know which is faster with the v2. On the v1 it's no contest - the USB performance is very poor, so backing up over the network is much faster. If you do back up over the network, I suggest using software that can verify. Teracopy is one option, there are others.
Disks can fail during expansion too, so I recommend doing a backup either way.
Thanks for all your help with this.
Final question for you. If I go down the rebuild route, what's the order of play when I bring the system back up. Should I start with the two 2TB disks in and set it to Flex-RAID, then once it's configured those, add the 4TB disk in and it will auto-create a 2nd volume?
sebbelcher wrote:
Final question for you. If I go down the rebuild route, what's the order of play when I bring the system back up. Should I start with the two 2TB disks in and set it to Flex-RAID, then once it's configured those, add the 4TB disk in and it will auto-create a 2nd volume?
In flexraid mode it shouldn't auto-create anything. When you insert the 4 TB drive, you'll have to select it and manually create the second RAID volume.
That said, on the v1 NAS I've found that sometimes the system ended up with RAID-1 when I triggered FlexRAID (though I wanted jbod).
But you want the 2x2TB to be RAID-1 anyway, so that's not a concern in your case. Still, you could start with the single 4 TB disk. Then add the remaining two, and create a RAID-1 volume with them. Both approaches will work.
After you start the factory reset, you have a 5-10 minute window to trigger flexraid mode from RAIDar. You'll need to use RAIDar 4.3.8 - RAIDar 6.x doesn't work for this.
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