backup to multiple backup sets at same time? in Retrospect 9 or higher for Macintosh Posted December 27, 2016 · Edited October 13, 2018 by DavidHertzberg Added P.S. with post #, because another thread refers to post #s in this thread · Report reply I posted the contents of my last three posts in this thread as Support Case #52765. Today I received the following reply from support@Retrospect .com (with Mayoff's name on it): "Agent Response: The original forum thread makes reference to a very simple question and it looks like Lennard Thelander already answered the question. All server editions of Retrospect support the ability to back up using multiple executions at the same time. If a user wants to write to 2 different tape drives at the same time, you must use the Advanced Tape Support add-on license." To which I replied in the support case—which is now marked Closed: "In his/her OP in the thread, jweisbin said 'I thought I would set up a disk backup set and a tape backup set that would be perfectly in sync.' Based on my tests, there's no reason he can't do that with simultaneously-running scripts. I actually have an old HP DAT drive that worked in June 2015, when I tested Retrospect 6.1 on my Digital Audio G4. I would rerun the test Copy Media Set scripts simultaneously using it for one Destination Media Set, but unfortunately my Mac Pro doesn't have a SCSI card. So I guess we'll just have to wait for jweisbin to try it, which I'll urge him/her to do. If it works, the Retrospect Inc. documentation committee will have a little problem. Will they want the knowledge of this capability of Retrospect Mac 13 to be continue to be disseminated only as a "secret" on the Forums, or will they want to officially document it—either in the User's Guide or as a KnowledgeBase article? That's why this Support Case is a Documentation request." So try it, jweisbin, and please let us know if it works. I believe you have a Server Edition, in which the Retrospect Preferences "Allow n Activity Threads" dropdown should default to 4. So all you should need to do is create two backup scripts, one to a Disk Media and one to a Tape Media Set, and in the Summary pane for the scripts set the "Use" dropdown to different Activity Threads. You can schedule them for the same time, and they should run simultaneously. P.S.: This is post #11 in the thread.