How long should a tape be in rotation before it is retired?
If we're talking about TAPE retention and not media retention, it's almost always indefinitely (in my humble opinion). The real answer will depend on your environment. First, look at the type of media you use and see how many passes they specify. Then compare that to the number of times you use the tape in a given week. Remember that "passes" includes every time the tape passes by the head, including rewinds, fast forwards, etc. Most people that I have found find that they will never reach the useful life of a tape.
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