My employer has CommVault Simpana 9.0.0 build 84 currently installed and configured on our backup server that is equipped with both a magnetic array and a tape library. It may be a newbie question, but it seems as if the system refuses to copy to tape and append one job after another to the same tape. Because of the current configuration, we now have multiple tapes with data ranging from a couple gigabytes to over a terabyte, but it is rare if ever at all that the system actually fills up a tape. I found some options under the Media tab for the copy properties of the various different Copy to Tape storage policies that I believe should fix my issue, but I am wondering what the preferred or recommended options and numbers are for the streams and multiplexing factor. I also check off that I want to Write a different library compared to the source copy. It would be ever so greatly appreciated if someone with a little more experience could advise me on these settings if they are in fact the settings that will fix my seemingly prematurely limited tape storage issue. I plan to try creating a new storage policy if for some reason these changes do not get the job done.
Thanks!
Russ
Best Answer
It isn't clear to me from your question if all the jobs that you're trying to append use the same storage policy. You refer to "various different Copy to Tape storage policies" in the question.
Commvault has a limit of one storage policy per tape. From the Commvault books online, "It is good practice to limit the number of storage policies in your CommCell environment; this will better utilize your media since media cannot be shared across storage policies."