Mixing different speeds and sizes

Good afternoon,

I have a requirement to mix some SATA 7200 with SAS 15000, I know, I know, its against best practices, etc. but this isn't for production and purchasing another shelf isn't an option.

Could someone please tell me what I need to do (commands)?

Reason: Disk '1.1.1' is not the same type of disk as at least one other disk in the list. Disks after '1.1.1' were not checked.

This is a FAS2220 running:

NetApp Release 8.3.2