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Changing from Flex-RAID to X-RAID
I was casually looking at the volumes tab of my ReadyNAS admin page. And so I noticed that the X-RAID button was not lit. I specifically recall getting a ReadyNAS specifically for X-RAID capabilitie...
Your logs show a 4x2TB RAID-5 layer and a 3x2TB RAID-5 layer. Replace the 3TB disk with a 4TB disk and you should get some more expansion.
Did you upgrade disk-1 from 2 TB to 3 TB after you installed the 4 TB drives? That would explain the layering mdgm reports (which explains the 9 TiB volume size).
The easiest solution is to upgrade the 3 TB drive to 4 TB. Re-creating the volume would also give you an 10 TiB (11 TB) volume size - but would also destroy your data, so you'd need to restore it all from backup.
I've had this device for quite some time now, so if memory serves, that would be a fairly certain yes.
Let's see...
I started out with 2-2-2-2, upgraded to 2-2-4-4, then 2-4-4-4 and finally got a hold of the 3TB so I got a 3-4-4-4 setup.
So yes, I guess that would explain the entire thing. At some point during the 3-4-4-4 setup, or the 2-4-4-4 setup (I can't recall), the whole OS was factory reset or something that really looked like it, because upon logging in to the UI made me set up a new administrator's account and all the data was gone, but I could not name my volume the way it was before.
Not sure what happened back then, but that's in the past and my point to this story is that the volume may or may not have been destroyed and rebuilt at that point, if that brings any clarity at all to the layering conundrum, as it were.
Roger that.
I will try to get a hold of a 4TB disk instead then and return here if expansion was unsuccessful.
Thanks for all of your help! :)
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