Backup Solution Advice Needed

I need some advice on the following backup requirement and would like to know the various available options. I need to propose a solution to meet this requirements

Local Site: A Backup Server with SAN & Tape library for data and image backup of around 100 Windows systems using any backup softwares.
Requirement 1: Secondary backup server at local site, preferably utilizing the same SAN & Tape library
Requirement 2: Replication of backup data from primary site SAN to remote backup site. The recovery steps t remote site.