http://www.datacenterjournal.com/facilities/a-guide-to-physical-security-for-data-centers/ http://www.datacenterjournal.com/facilities/a-guide-to-physical-security-for-data-centers/
http://www.sdmmag.com/articles/90309-canon-acquires-milestone-to-make-major-advance-in-network-video-surveillance-business?v=preview http://www.sdmmag.com/articles/90309-canon-acquires-milestone-to-make-major-advance-in-network-video-surveillance-business?v=preview