I currently have a Storage Spaces pool with eight 4TB disks allocated to a single virtual disk in mirror mode (two columns, two copies). I am attempting to add a single 6TB disk to this array and am unable to do it in the Storage Spaces UI or through PowerShell, as I get an error message saying "One or more physical disks encountered an error during addition to the storage pool. The request is not supported."
I have tried reseating the disk, restarting, etc. all to no avail. The interesting thing is that while I cannot add it to this pool, I CAN create a new pool with that disk as its sole member.
While I don't believe it should be relevant, the existing pool is 8xSATA drives and this additional drive is SAS. All installed in a Lenovo SA120 enclosure connected through an LSI 9200-8E HBA.
Any thoughts on why I can't add this disk, and (more importantly) if there is anything I can do to correct that?