Drive Manager doesn't seem to be installable on Monterey

And I was hoping to change the RAID status of my two Studio II drives. Any suggestions?

Hi @jonhaywooduk,

Please be informed that the My Book Premium II, My Book Pro II, and My Book Studio II external hard drives are pre-configured for RAID 0 (Striped) mode for maximum capacity and accelerated performance. These products also support RAID 1 (Mirrored) mode for data protection, which dedicates half the capacity to mirror the data in both internal hard drives.

We would like to inform you that Legacy products or EOL software do not support or have not been tested, or validated on macOS 12 Monterey.

Note: Support for My Book Studio Editon II has ended and is no longer available per WD Product Software Support Status.

We request you to refer to the below-mentioned link for detailed information:

Title: How to change the RAID level of a WD My Book drive (Premium II, Pro II, Studio II, Mirror Edition)
Link: How to change the RAID level of a WD My Book drive (Premium II, Pro II, Studio II, Mirror Edition)