[ExchangeList] Re: free space after offline defrag

  • From: "Yu, Joy" <joy.Yu@xxxxxxxxxxxxxxx>
  • To: <exchangelist@xxxxxxxxxxxxx>
  • Date: Thu, 28 Sep 2006 10:00:25 -0400

Thanks Carl for the explanation.  You have answered a question I have
thought about for a while.

 

Joy

 

 

  _____  

From: exchangelist-bounce@xxxxxxxxxxxxx
[mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Carl Houseman
Sent: Monday, September 25, 2006 12:22 PM
To: exchangelist@xxxxxxxxxxxxx
Subject: [ExchangeList] Re: free space after offline defrag

 

No.  When items are permanently removed from the database the resulting
empty space is used for storing new items.  Onlly when the empty space
is all used up does the database file size increase.

 

  _____  

From: exchangelist-bounce@xxxxxxxxxxxxx
[mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Ara Avvali
Sent: Monday, September 25, 2006 11:56 AM
To: exchangelist@xxxxxxxxxxxxx
Subject: [ExchangeList] Re: free space after offline defrag

Hi Carl,

Yes there is incoming traffic and I believe it is much higher that clean
up especially due to attachments. But I thought this is the way it
works:

*       Let's say for example I have a 10 GB database 
*       Cleanup policy deletes 1 GB, so the database stays at 10 GB but
will shrink down to 9 if I do offline defrag 
*       Meanwhile if I receive new emails, database goes to 11,12,13 GB
and higher still having the potential of loosing 1 GB 
*       Doing offline defrag bring it down 1 GB as example from 13 to 12


 

Isn't it the way it should be?

  _____  

From: exchangelist-bounce@xxxxxxxxxxxxx
[mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Carl Houseman
Sent: Sunday, September 24, 2006 7:38 PM
To: exchangelist@xxxxxxxxxxxxx
Subject: [ExchangeList] Re: free space after offline defrag

 

If you purged deleted items worth 500 MB/week for 4 weeks and never
received any new mail at all, then you should get back 2GB of real space
for an offline defrag.

 

Seems likely/possible though, that you are receiving new items, and
probably more volume in new items than in the old items being
deleted/purged.  This would be the case with most organizations.

 

Carl

 

  _____  

From: exchangelist-bounce@xxxxxxxxxxxxx
[mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Ara Avvali
Sent: Sunday, September 24, 2006 10:26 PM
To: exchangelist@xxxxxxxxxxxxx
Subject: [ExchangeList] free space after offline defrag

Hello everyone

 

I just have this strange feeling. We got a 2003 SP2 server. I have a
mail box manager policy that cleans up junk mail and deleted items after
a week. Every Sunday night I get a report that at least 500 MB is
deleted. So when I do the offline defrag once a month at least I should
get 2 GB of free space back from database. But that doesn't happen. As
an example I ran a defrag last night after 2 month wait and I only got
120 megabyte back. Something is not right and my database keeps growing
larger. Any idea?

Thanks 

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