Adaptec SANBLOC S50 - Manual (Page 7)

5 SANBloc S50 Quick Install Guide
Installing Additional Disk Drives
If the SANbloc S50 enclosure came with 4 drives installed, you can install
up to 8 additional disk drives. The enclosure supports up to 12 SAS or 12
SATA disk drives, or a combination of both (up to 12 drives total).
Caution Acclimate new disk drives to room temperature before you
install them.
Before You Begin
While you can combine SAS and SATA drives in the same enclosure; you
cannot combine SAS and SATA drives in the same column of drives. If
you are combining SAS and SATA disk drives, use the figures below to
plan where you will be placing the disk drives.
These figures represent enclosures fully-loaded with disk drives.
However, the same guidelines apply even if you are filling some of the
drive slots with blank drive carriers.
Recommended Disk Drive Configurations
SAS Disk Drives
SATA Disk Drives