The Backup Exec Central Admin Server Option (CAS) and the Shared Storage Option (SSO) can be used together to provide the following:
Separate license keys can be purchased and entered for both CASO and SSO for installation on a Backup Exec media server. The CASO server and the SSO Primary server should be installed on the same Backup Exec media server to centrally manage all shared devices. Additional SSO licenses are required for each Backup Exec media server that shares the centralized device on the SAN.
You can find a list of compatible devices at the following URL: