I think the subject sums it up pretty well. I've got backups that go back weeks on tape / sbt, and want to keep just one backup on disk. Seems like if I make the recovery window one day, it still keeps two complete copies. Looking for a way to make sure I've got a single valid backup on disk, but to only keep that backup, and nothing before. If I need to recover from before that, I'll go to SBT.
Thanks!
-Adam