Move from 6x2TB to 6x3TB

InterClaw wrote:
Oh okay, so since I'm on 4.2.19 I should be fine?

Yes, but I'd still update to the latest firmware (currently 4.2.21) before adding 3TB disks.

InterClaw wrote:
Well, the disks I started off with in this Pro Pioneer was 3x2TB WD2002FYPS-01U1B0. I later bought a 4th one (01U1B1) and finally the two last ones (02W3B0). I don't remember what firmware I was running at the beginning or when expanding though.

O.K. So let's say your volume was originally 3.6TB. There is an 8TB online expansion limit so you could expand to 11.6TB. You could add some 3TB disks but you're going to hit this limit before you replace all the disks with 3TB disks. Another limit is that you can't expand past 16TB. If you wanted a volume larger than 16TB (e.g. using currently unsupported 4TB disks using X-RAID2 single-redundancy) you'd need to do a factory default (wipes all data, settings, everything) with those disks in place.

If you download your logs (Status > Logs > Download all logs) and look at initrd.log it'll let you know what firmware you were on when you last did a factory default and the firmware updates you've done since.

InterClaw wrote:
I have X-RAID2 single redundancy. I found this in the volume.log: /dev/md0 ext3 and /dev/c/c ext4 Am I guessing right that the system in the NAS is still running on ext3, but the volume with all my files has been converted to ext4 and there's no (practical) limit to the size of the volume anymore there?

The volume is mounted as EXT4. Depending on what firmware was on your system when you last did a factory default it may/may not be native EXT4.