RN214, query on a 2nd vertical expansion

Well, I was already moving the data out, so I was committed to that. Data safety was the greatest concern, surely it was more operator intensive. Done now, anyhow.

Now all 4 hdd have been Read-Write-Verify’d, and all data has been moved to two of the 12TBs. Now the procedure to follow could be:

1. remove all disks from the 214; (do I need a reset ?)
2. add 2x 12tb and start;
3. choose Flexi-RAID and set it to RAID 0 with full capacity (no protection, unique data);
4. move the data back there (which again may take few days);

On the SoftwareManual, Flexi-RAID with “2 or more disks” and RAID 0  “Can I add a disk for data protection? – Yes. (Additional disk provides single redundancy and converts the volume to RAID 5.)” .

• 5) hot-add the3rd disk which would invoke the 1st resinch;
• 6) hot add the 4th diskwhich shouldinvoke the 2nd resinch;
• 7) convert the Flexi-RAID to X-RAID.

But I could also convert from FlexiRAID to X-RAID after I copied the data, before (5) and (6) (adding the 3rd and 4th disks): the Manual quotes “If your system contains only one volume, you can easily switch from Flex-RAID to X-RAID. Data on the Flex-RAID volume is preserved when you switch to X-RAID.”

Which of the two procedure should I choose?

On a different topic, I generally try to follow the “If ain’t broke, don’t fix it” rule. But at moment, this RN214 is on 6.10.3 (and so is the other 214, the 424 is on 6.10.4). OS6 is now on 6.10.  After (1) (NAS with no data), it could be a good time to upgrade the OS, if so, it may be better to do it sequentially 6.10.3 to 6.10.4, then to 6.10.5 etc.

But,is it really NECESSARY to upgrade the OS and, if so, also NECESSARY to do it sequentially?

Thanks in advance, Berillio