It all depends on the API.  If SQL or Oracle has an
API call that instructs the application to momentarily
freeze the databases in a recoverable state, then your
SAN can use that API and perform a snapshot backup. 
With Exchange 2000, the only way this works is to
dismount all the stores, take the snapshots, and mount
the stores.  I really don't think that's an acceptable
way to operate.  Now, Microsoft certainly has to be
aware of users' desires to store Exchange databases on
SANs, so perhaps a future version of Exchange will
have an API that support snapshots.  I wouldn't depend
on that when making today's backup plans; chasing
rainbows just leaves you winded.

Ed Crowley MCSE+I MVP
Technical Consultant
hp Services
"There are seldom good technological solutions to
behavioral problems."


-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]] On Behalf
Of Hansen, Eric
Sent: Tuesday, December 17, 2002 7:39 AM
To: Exchange Discussions
Subject: RE: More OT: Hitachi SAN


If you cant restore it, whats the point?

Is it safe to assume the same with a SQL or Oracle db
as well?  What about a AD global directory?

I'm getting the impression that its good for file
systems and file servers and not much more.

e-



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