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Exchange Server Logs

Posted on 2011-03-22
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Last Modified: 2012-05-11
I am running Exchange Server 2003 and  today I just started building up log files in on my exchange server in [\Program Files\Exchsrvr\MDBDATA] .in the hour  I got about 15 log files the files look like E0025C7F.log I’m not sure what happen but now I’m out of disk Space. But now when I open one it's like a coded one - it's full of strange symbols. Can someone help me, please?
Thank you.
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Question by:ahmad1467
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18 Comments
 
LVL 70

Expert Comment

by:KCTS
ID: 35194645
They are transaction logs and are perfectly normal, when you do a backup of exchange they will be truncated (deleted)
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Author Comment

by:ahmad1467
ID: 35194649
I'm having problems with my Exchange backup can I delete them?
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Expert Comment

by:KCTS
ID: 35194661
NO

You must only delete them via your backup - if your backup isn't working properly then the transaction logs could be the only way to recover your exchnage data - you need to fix the problem with the backup
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Author Comment

by:ahmad1467
ID: 35194680
Would this be through my Backup Exec?
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KCTS earned 2000 total points
ID: 35194696
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Expert Comment

by:KCTS
ID: 35194709
BTW you should always allow a singnificant amount of 'free' disk space on en exchange server - so that you have room to do stuff such as restore and defrag the exchange files
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Author Comment

by:ahmad1467
ID: 35195261
My server is a VM server when I finish making a clone of my server I will try to expand the drive size that my Exchange database lives on, do you know why these logs would have accumulated so quick?
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Author Comment

by:ahmad1467
ID: 35197892
I ran a backup with backup Exec hoping that it would clear my Exchange transaction logs the backup Job completed successfully with Exceptions but didn’t clear the logs. Currently I am at only 319 MB of free space. I’m going to try and Extend the partition but do you think if I start deleting emails until I canget this done it would help?
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Expert Comment

by:KCTS
ID: 35197924
319Mb - thats critical you need to have at least as much disk space as the size of the database - preferably twice as much - rathter than extend the partition why don't you just move the database and/or transaction logs to another disk (assuming you have one) - see http://support.microsoft.com/kb/821915
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Author Comment

by:ahmad1467
ID: 35198003
Can it be moved to a network Share becase Idont have enogh space on my C: or D drive and this is a VMware Sever.
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Author Comment

by:ahmad1467
ID: 35198123

I have 100Gb of unallocated hard drive space would it be safer if I format this space and create a new partition and change my Exchange properties for the database an logs to point to the new partition?

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Expert Comment

by:KCTS
ID: 35199018
You certainly need more space than you have currently allocated and it would be more effective to use the unallocated space.

I'm not sure what point @iQasmi was trying to make about circular logging - but my advice is DON'T use it. Circular logging does not allow for the full recovery of exchnage if you have a problem that requires the database to be restored.
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Author Comment

by:ahmad1467
ID: 35200394
@KCTS so at this point do you think my best bet is to use the unallocated space in the image, set it as a partition of F: and redirect Exchange properties to the new partition.

Thanks

Drive-Space.jpg
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Expert Comment

by:I Qasmi
ID: 35209226
Yes thats correct if you allocate ur new drive partitions for the Exchange database and logs.
It would be better one partition for logs another one for Database would be fine
My idea of circular logging was just to save space and i have already mentioned in it thats it not recommended
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Author Comment

by:ahmad1467
ID: 35211100
I think if this works I'll be good because I am in the process of moving to an Exchange Cloud solution
Does it matter if the partition is a primary or logical drive because I already formatted the drive as a primary partition?

Thanks
Drive-Space2.jpg
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Expert Comment

by:KCTS
ID: 35211129
Ideally it should be a seperate physical drive - as its only a temporary a logocal drive will be better than nothing -  it does not matter if its a primary or logical partition
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Author Comment

by:ahmad1467
ID: 35211265
OK thanks I will chang my log file path tonight
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