It's only if you are taking snapshots of running db's that you have the problems. OK I know there are a number of sites out there who will not allow even a minute of the air but the majority of us can live with a script that shuts down the db does the snapshot and then restarts the db all done in less than a minute. You can then kick off your backup which backs the snapshot up to tape. I have seen this form of snapshotting on EMC and NetApps and it works very well. I have also seen Oracle databases recovered from snapshots successfully.
Listening to MS they have added support for snapshots in Windows.NET and they are also saying that there will be snapshotting available on the next version of Exchange, but lets wait and see. The snapshots in .NET is more of a complete copy followed by delta's for each subsequent snapshot. EMC and NetApps use technology that provides instant snapshots as all it does it take a snapshot of the block allocation table and only if a block is about to change does it create a second block to keep a copy of the block as at the time of the snapshot. This obviously saves on space but if you have a mutliple disk failure does mean you could lose all of the data for that snapshot, though in one of these modern SAN's with multiple spare drives is very unlikely. -----Original Message----- From: Hansen, Eric [mailto:[EMAIL PROTECTED]] Sent: Wednesday, 18 December 2002 1:39 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- -----Original Message----- From: Ed Crowley [mailto:[EMAIL PROTECTED]] Sent: Monday, December 16, 2002 11:03 PM To: Exchange Discussions Subject: RE: More OT: Hitachi SAN You might be able to restore one if you're lucky. 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 Roger Seielstad Sent: Monday, December 16, 2002 5:21 AM To: Exchange Discussions Subject: RE: More OT: Hitachi SAN You can take snapshot backups of the database. You can't restore them, but you can take them. Roger ------------------------------------------------------ Roger D. Seielstad - MCSE Sr. Systems Administrator Inovis - Formerly Harbinger and Extricity Atlanta, GA > -----Original Message----- > From: Ed Crowley [mailto:[EMAIL PROTECTED]] > Sent: Friday, December 13, 2002 5:31 PM > To: Exchange Discussions > Subject: RE: More OT: Hitachi SAN > > > I've seen Exchange 2000 run on servers that use a Hitachi SAN. There > really shouldn't be any problem running Exchange on any high-quality > SAN system. Don't believe the hyperbole, however, that you can take > snapshot backups of the Exchange databases. > > Ed Crowley MCSE+Internet MVP kcCC+I > Tech Consultant > hp Services > Protecting the world from PSTs and Bricked Backups! > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED]] On Behalf Of Hansen, Eric > Sent: Friday, December 13, 2002 6:39 AM > To: Exchange Discussions > Subject: More OT: Hitachi SAN > > > 2nd verse, same as the first... :p > > > Anyone running a Hitachi 9900 V Series SAN? Or maybe just the 9900 > series? > > > > Normally I wouldn't ask such things of an exchange group, but the > diversity and technical expertise here is very good. > > e- > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Archives: http://www.swynk.com/sitesearch/search.asp > To unsubscribe: mailto:[EMAIL PROTECTED] > Exchange List admin: [EMAIL PROTECTED] > > > _________________________________________________________________ > List posting FAQ: http://www.swinc.com/resource/exch_faq.htm > Archives: http://www.swynk.com/sitesearch/search.asp > To unsubscribe: mailto:[EMAIL PROTECTED] > Exchange List admin: [EMAIL PROTECTED] > _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED] _________________________________________________________________ List posting FAQ: http://www.swinc.com/resource/exch_faq.htm Archives: http://www.swynk.com/sitesearch/search.asp To unsubscribe: mailto:[EMAIL PROTECTED] Exchange List admin: [EMAIL PROTECTED]
