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Exchange 2010 backup...

About how long does a full backup of exchange 2010 take?  If I start it at 9:00PM will it most likely be done by 5.;00am the next day?  I know it depends on how big the mailboxes are but I am just asking an estimate time.
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Neil Russell
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How long does it take to walk to the shops?

About as much sense as your question im afraid.

I have one exchange system takes 1 hour

Another that takes 5 hours.

I know of one admin who if he did a full backup everyday it would not finish before the next one started.
Give us at least one clue, How many users? 100,1000,10000,50000?
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We only have 25 users and it is a new exchange server.....
what is the backup destination - DAS, TAPE, another server over slow vpn ? It will affect backup speed.
Just for a reference  -one of my clients  backup to scsi tape on the same server takes about 5 hours  to backup 550GB of data.
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