ReadyNAS Ultra 4 - Trying to expand with new 4tb drives
Hi there.
I have a ReadyNas Ultra 4. It came with 3x3tb drives. They got pretty full recently, so I bought a new 4tb drive. Put that in and X-RAID2 did it's thing, and expanded the RAID.
I've just noticed now though, that only 3tb's has been allocated, not the full 4TB's of the drive?
I have a ReadyNas Ultra 4. It came with 3x3tb drives. They got pretty full recently, so I bought a new 4tb drive. Put that in and X-RAID2 did it's thing, and expanded the RAID.
I've just noticed now though, that only 3tb's has been allocated, not the full 4TB's of the drive?
You need to install a second 4 TB drive to enable expansion. That's required to maintain redundancy.
The capacity rule is: sum the disks and subtract the largest.
That gives the same result - 9 TB - for your original configuration and your new one. That would be ~8.2 TiB.
FWIW I suggest getting WDC Red drives in the future - they are similarly priced, have better warranties, and are intended for RAID/NAS.
Re: ReadyNAS Ultra 4 - Trying to expand with new 4tb drives
Thanks! I thought that might be the case, I only actually noticed it wasn't all allocated when I went into admin panel to see what model I had to order another one.
I bought it second hand, but when I used up the first three drives and started researching what to get as the 4th - saw online that the existing ones in there aren't good for NAS 24/7... So my plan is to swtich one of these 3tb ones out now with a new 4td RED and then eventually do the same with the other two as well.
Will I get any expansion when I switch another one out? Or will I need to switch the last two out (obviously not at the same time!)
Will I get any expansion when I switch another one out?
Yes, it will expand by 1 TB. First the volume will resync. Then "vertical expansion" will occur. You probably will be prompted to reboot after the initial resync.
