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So, we now have these storage groups that function like a collection of mini-sets and mini-catalogs, with each client or source getting a mini-set/catalog. When I have to repair or rebuild a set on any of my consulting clients' Retrospect installations (WAY more often than I should if I had a truly reliable backup program IMHO), I see the individual "mini-sets" getting scanned and rebuilt. Is there a way to trigger a repair or rebuild for an individual source in a storage group? Right now I've got a client that isn't backing up due to a "chunk checksum (-641)" error. I'm so tired of rebuilding multi-terabyte backup sets that I really don't want to have to put everything on hold yet again while this 5TB disk is scanned and the catalog rebuilt. Since each source appears to have its own, self-contained catalog and folder of band files on the backup disk, couldn't Retrospect just rebuild the individual source whose catalog has failed? Thx, Fred