-16443401 Mo (-3565%) of 450 Go used

gaetan wrote:

... May I ask another quick question ? At the moment, I have 2 disk of 500 Go ... Can you please confirm that if I want to expand the storage space, I have 2 solutions: 1- addind a third (or fourth, fifth ..) hard drive of the same capacity in order to expand storage space. or 2- remove one of the 2 500Go disks - then add for exemple a 1To hd, wait for data to be copied ... reboot ReadyNas in order to expand free space, then replace the other 500Go disk leave by another one of 1To

Basically yes. But not 100% right,
-With option 1, you could add 1 TB drives, you are not limited to 500 GB.
-With option 2, there is no expansion until you install the second 1 TB drive. With normal single-redundancy, the capacity of the array is the total minus the largest.

If you are happy with single redundancy, then it is cheaper (per GB) to fill the empty slots first. Of course that assumes your existing drives are not failing.

If you are considering dual redundancy in the future (ultra/pro supports this, not sure about nvx), then add a third 1TB drive, then after expansion completes replace one of the initial two with a second 1 TB drive. That leaves an empty slot for the future dual-redundancy drive