Do non-Sun disks work in a ZFS appliance?

Hey folks,

I have a ZFS 7120 that is out of service agreement and darn those
disks are expensive!  $2K for a 3T drive that will act as a 2T (2T no
longer available).

I know Sun puts its own BIOS on the drives but I hope that does not
mean it will prevent me from using a generic drive.

Can I just pick up the equivalent SAS drive from Seagate (or other) and use it?

thanks,
-Alan