BE16 Central Admin Server (CAS)
CAS is an option within Backup Exec which allows you to promote BE Media Server to a Central admin Server.
As your environment grows and you have Multiple BE Server (MBES) you can manage and designate job, configure storage, load balancing from one single management console.
Checkout my video on how to promote an existing BE Media server to CAS: https://youtu.be/5x-j2lhFp-s
