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ReadyNas104 Adding a new hard drive
I currently have 3x 4TB hard drives in my readynas setup as Xraid. I have 8TB (slightly under to be exact!) of space. I have one expansion slot free. I am thinking of buying a 8tb or 10tb nas drive t...
1 - If you are running OS 6.4 or later, there is no known capacity limit, and XRAID2 will permit a mix of drive capacities in a single volume.
2 - Total capacity in a RAID5 volume will be increased by the amount of the added drive equal to the largest drive in the exisiting volume. An 8TB drive added to a 3 x 4TB volume will increase total capacity by 4TB; an 8TB drive added to a (2 x 4TB) + (1 x 8TB) volume will increase total capacity by 8TB.
3 - Replace drives one at a time, and wait for volume to sync and change from DEGRADED to REDUNDANT before replacing another drive.
4 - Back up volume before changing firmware or volume expansion and, in any event, just in case.
1 - If you are running OS 6.4 or later, there is no known capacity limit, and XRAID2 will permit a mix of drive capacities in a single volume.
2 - Total capacity in a RAID5 volume will be increased by the amount of the added drive equal to the largest drive in the exisiting volume. An 8TB drive added to a 3 x 4TB volume will increase total capacity by 4TB; an 8TB drive added to a (2 x 4TB) + (1 x 8TB) volume will increase total capacity by 8TB.
3 - Replace drives one at a time, and wait for volume to sync and change from DEGRADED to REDUNDANT before replacing another drive.
4 - Back up volume before changing firmware or volume expansion and, in any event, just in case.
coloatty wrote:
1 - If you are running OS 6.4 or later, there is no known capacity limit
Right. There was a 16 TiB volume ceiling for the RN100 series early on, but that was addressed in the 6.4.0 firmware.
XRAID capacity is as coloatty says. Another way to express it: The total volume size is the sum of the drives minus the largest drive.
So you'll need to upgrade one of your existing drives in order to take full advantage of the space of a new 8-10 TB model - doubling the cost of the upgrade.
One option you have is to turn off xraid, and to create a non-redundant (jbod) volume with the new drive. You'll get all the space, but there will be no RAID protection on the new volume. You'll still have RAID protection on the existing volume.
Or you could settle for the 4 TB growth you'll get now, and upgrade another drive later on to get full advantage of the space.
therealnips wrote:
I am thinking of buying a 8tb or 10tb nas drive to go in there.
When you choose the drive, you should research the mounting holes (both on the sides and bottom).
Ideally you'd find a suitable drive that has the middle side mount holes. That will let you use the diskless plastic insert in the tray. The WD80EFZX is compatible with the diskless inserts. The 8 TB Seagate Ironwolf drives aren't.
If there is no middle side mount hole, you can remove that insert, and screw the drive into the bottom of the tray. Likely some of the bottom mount holes won't line up with the holes in the tray. But you should still be able to secure the drive.
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