• You only ever need to restore the last differential backup. They're differentials, not incrementals. Restore the full backup, the last differential then, if you're restoring log backups as well, all log backups since that last diff

    Gail Shaw
    Microsoft Certified Master: SQL Server, MVP, M.Sc (Comp Sci)
    SQL In The Wild: Discussions on DB performance with occasional diversions into recoverability

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