We currently have a Commvault system with two sites. We have a primary copy at our primary site and a syncronous copy at a remote site. This works great but both systems are online all the time and theortically could both be comprismised at the same time.
I have been brainstorming about using a pair of media agents with their own dedicated storage to be run with two more selective copies of our storage policies. My thought is that we could keep one of the two selective copies powered off and offline and then we rotate them back and fourth so at any given time, we have one selective copy online with a full set of all of our last full backups and one offline selective copy with a full set of full backups. Once a month we would rotate the ones that is online and offline and the one coming online would "catch up" on its selective copies.
I don't have any experience with selective copies, so I don't know if this would accomplish our goal and I am not sure if Commvault would care or not if the media agent for a selective copy was offline for a month at a time.
My thought is that offline would mean really offline for us, physically powering down the media agent and unplugging it along with its storage. Actually in this particular case, we could probalby put the storage locally on the media agent using a few SAS enclosures then the entire air gap solution lives on one physical server and can be physically unplugged.
Any thoughts, we would appeciate it.