IT folken! If corpo borporate boss ever tells you to erase the security footage and/or logs, remember these magic words: "Sure just send the request in writing and I'll get right on it."
And maybe backup those logs to a thumbdrive if you feel comfortable with that.
Just backing you up, yeah... Physically taking tape backups to a secure offsite location is one of those best practices.
Hell, my personal back ups for my server are stored redundantly on one of my parents file servers. Same for their stuff on my server.
If there is a big enough disaster that both our servers locations are rendered damaged from it, we got bigger problems than a server, like a massive metroplex getting razed.