Tape Back Question

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    I am trying to come up with a new tape rotation schedule.

    If we implement, weekly full backup say on Friday, while we do differential backups during the week.

    My question is on the recoverable data.

    Say we are in 3rd week, Monday and the previous week’s full backup tape doesn’t work (corrupt). Can we go the the 1st week full backup and use the 2nd week’s differential tape from Thursday?

    Or does the fact that you do a “full” backup on Friday, reset all your differential tapes to reference the last full back up – and ignore previous full backup tapes?


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