> Mirroring does not replace good backup tapes: an accidental ERASE or FORMAT > is mirrored perfectly well to your DR site.
Yes. Mirroring does not make any tape backups redundant, but they do drop to plan B in case of disaster. They remain plan A if you lose a file or a disk and even then FlashCopy and its brothers may give you a quicker solution. They (tapes) are the only plan if you lose both sites. Now, *that* would be a DR test, if someone would pay for it. > Secondly: if you simply have a two copy mirror, performing DR tests means you > break the mirroring during the test and at that time you no longer have a > mirror. Yep. During the test and a few hours after the test until re-sync is done. But those tape backups are still there. Ivica
