Upgrade migration PR2100 to PR4100

My Cloud OS 3 Personal & Network Attached Storage My Cloud Pro Series
1

I currently have a PR2100 in RAID1 configuration.

I could do with some more capacity soon and would like to upgrade to a PR4100, but switching to RAID5 (with 3 discs at first and then 4 disks).

Is there an recomended method to achieve this?

I imagine I could take one of the RAID 1 disks to use a starting point, Then copy the data from that, within the PR4100 to 3-other-disks configured as RAID5.

Could I then re-add the source disk as part of the RAID5 set?

2

Not sure if the WD firmware lets you upgrade via the GUI but it’s definitely possible to simply grow a RAID1 to RAID5 with those 2 commands.