Re: Size of database seems to be really large for Number of users

  • From: "Chris Williams" <chrisw@xxxxxxxxxx>
  • To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
  • Date: Tue, 14 Dec 2004 11:53:26 -0800

Couple things to remember:

* Even though the database file size may be large, it could have white
space that will be used as you move users over from the 5.5 server.  So
the database file is not guaranteed to grow in a linear relationship
with new mailboxes.
* second, if you move mailboxes over one by one, you are placing them in
the new server and breaking single instance storage that they had on the
Exchange 5.5 server.  So if there were a lot of large messages or
attachments that were stored singly on the 5.5 server, there is now a
separate copy of each of those messages/attachments on the new server.  

This will work itself out over time, as those old messages are deleted.
The only way to have avoided this problem is to have done an in-place


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