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Rob Berendt wrote on 11/17/2009 08:54:48 AM:

Yeah, I understand that. But the people here said absolutely no
exclusion
time, not even the minimal required to do checkpoint processing. But,
even if we accept that, it still doesn't get everything.

Hey, you've got a DR system, why don't you just end mirroring to your DR
system and run the backup on it? Later you restart mirroring and the
systems resync themselves. Sure you're "unprotected" for a short period
but it's not like you don't have a UPS and generator for power protection
and RAID for disk protection. To minimize the unmirrored time you could
still do a SWA with checkpoint processing on the DR system. All you
really need to control is when/how to stop the mirroring. If your
important objects aren't on the DR system then maybe they should be. If
it's inconvenient for the tape handling then make your live system the
remote one and the DR system the local.


Dave Parnin

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