X-RAID change/upgrade question

---

schlaraffen wrote:

 

1. If I would exchange 1x 4TB disk with ...lets say a 8 TB disk, nothing would change regarding the total capacity of 10.90TB. Right?
2. If I would exchange 2x 4TB disks with 2x8TB disks, the total capacity of the X-Raid would increase to 14.90TB. Right?

---

Close.  with 4x4TB, you actually have a 12 TB volume.  But the NAS reports TiB (1024*1024*1024*1024 bytes), not TB (1000*1000*1000*1000 bytes).  12 TB is the same as 10.9 TiB.

upgrading 2 drives to 8 TB will give you a 16 TB volume - which is the same as ~14.5 TiB (not 14.9).

---

schlaraffen wrote:

Is a mixed disk environment like mentions in option number 2 possible and would it work?

 

---

Yes.  The capacity rule is "sum the disks and subtract the smallest".  Note there are some rules with mixed sizes.  For instance, you can't put a 3 TB drive in your existing array.    And after you add 2x8TB you won't be able to upgrade one of the 4 TB drives with a 6 TB drive.  You will be able to replace it with a 4TB drive if you like.

---

schlaraffen wrote:

Of course I would plan to exchange the other 2 x 4TB disk for performance reason after a while to get a native 4 x 8TB config at the end.

---

There won't be much (if any) performance gain.