Can I add a 5th Disk?

alexofindy wrote:

Leia: When I set up my system a year and a half ago, I added the first three 3TB disks one at a time, followed by a 4th disk which I added recently. The first disk I added gave me redundancy, and the second two disks gave me more space. I have already used about 5500GB of my 8 GB allowed expansion. The 8 TB expansion limit was not well publicized, and the system documentation for the Readynas suggested that doing things one disk at a time was the way to go. Obvously, this was a mistake, but I didn't know any better at the time. I want to know if I can safely add another 3TB drive, and get 2400GB or 2500GB of expansion. Thanks!

Hi alexofindy,

Yes, you can hot-add another 2 drives, the 5th for expansion and the 6th for dual redandancy. After that, your volume will grow to 11105GB.
The 8TB limitation is ext4's limitation. ext4 only allows for online expansion of up to an additional 8TB with 64-bit filesystems.

Thanks,
-Leia