We are still a straight up backup to tape shop, and have started looking
at VTL's, and going to disk, before sending them off to tape after "x"
number of days.  

Anyone care to share their stories, and how they decided how much
storage (days) they really needed?   Any good, or bad stories on things
to avoid?  How did you justify they cost? 

Our biggest problem is going to be the size of storage.  Our daily
Exchange backups are 9 TB, so we are going to be looking at a pretty
good size storage pool.   

TIA. 

David M. Browning Jr.
IT Project Coordinator Enterprise Backups and Help Desk

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