Technically, this would require a VSMS LTS (Long Term Storage) instance registered to VSOM. One of these servers can be used for 'backup shipping' mass amounts of video data for long term storage.
http://www.cisco.com/c/dam/en/us/td/docs/security/physical_security/video_surveillance/network/vsm/design/vsm_7_design.pdf
Scott Olsen
Solutions Specialist
Bulletproof Solutions Inc.
Web: www.bulletproofsi.com