Understanding Exchange

Ok, some probably basic questions for you guys.

I was under the impression that priv.edb contain all of the email - one nice fat file to backup. Why are there also .log files? Without the log files, is it not possible to use the priv.edb to get all of the mailbox data back? If that's the case, how can I commit all of the data to the .edb file, so I can just save the priv.edb?

Cheers,
Meduzi.
meduziAsked:
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Lee W, MVPTechnology and Business Process AdvisorCommented:
the edb files are not flat files.  They are databases.  The log files are the logs of all e-mails received since the last backup of exchange.  You must use an Exchange Aware backup and it will automatically clear out the log files when you perform the backup.  In the event of an Exchange failure, the log files can rebuild the database to its current point by being applied to the restored database.
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Nick RhodeIT DirectorCommented:
Basically the log files are all the transactions that happend on the server.  Once they are commited to the database they get purged.  Logs can build up pretty fast but get flushed out after a backup of the exchange server.
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meduziAuthor Commented:
Hi guys. Thanks for the reply.

Ok, I get that now. Is there a way that I can commit all of the data to the .edb file manually (command line?) so I can just save the priv.edb with the latest data?
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Nick RhodeIT DirectorCommented:
You can but it will dismount the database and I highly do not recommend it.  Also those log files build up on a daily basis so you will be creating alot of unneeded overhead for yourself.  Why dont you just use SBS backup which backs up everything for you and flushes out the logs upon success.  I guess what is your overall objective and what version of SBS are you using?
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meduziAuthor Commented:
The backup had been failing for some time with 175K logs built up. I used Diskshadow in the end to commit. Then backups worked.

Thanks for your help.
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meduziAuthor Commented:
Second part of the query supplied by myself.
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