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[ask]performing offline defrag - 18.Nov.2008 12:07:22 PM

romadona

Posts: 11
Joined: 5.Nov.2008
Status: offline

Hi

i just wanna get advice

i'm planning to make offline defrag with my exchange database

i have 40 GB drive space contains for exchange database, now total EDB and STM file is 39 GB,

am i possible to run offline defrag,or should i move it first to another drive that bigger than now.

please advice , thanks
Romadona

Post #: 1

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RE: [ask]performing offline defrag - 18.Nov.2008 3:42:26 PM

uemurad

Posts: 5571
Joined: 7.Jan.2004
From: California, USA
Status: online

If possible, you should look to expand the drive space first. Drives are relatively inexpensive.

If you don't want to go that route, you should first consult your Application Log and look at the most recent 1221 Event. That will tell you how much whitespace is in your database, and represents roughly how much space you can expect to recover if you perform the offline defrag.

If you only have 1GB of freespace, you aren't going to be able to run the offline defrag on that drive. Ideally you'll want at least 50-60 GB free.

_____________________________

Regards,

Dean T. Uemura
Microsoft MVP - Exchange
exchangeguy.blogspot.com
uemurad@yahoo.com

(in reply to romadona)

Post #: 2

RE: [ask]performing offline defrag - 18.Nov.2008 3:51:53 PM

Naddy

Posts: 134
Joined: 22.Oct.2008
Status: offline

Offline defrag requires 110% of free space of the database.

(in reply to uemurad)

Post #: 3

RE: [ask]performing offline defrag - 18.Nov.2008 10:51:00 PM

romadona

Posts: 11
Joined: 5.Nov.2008
Status: offline

Thanks

Dean & Naddy

but why my event viewer only contains MSEXCHANGEAL log ( address list syncronization) event id 8011,8012,8162

i cannot see the 1221 event, how can i get the 1221 event.

thanks
Romadona

(in reply to Naddy)

Post #: 4

RE: [ask]performing offline defrag - 19.Nov.2008 3:49:38 PM

Naddy

Posts: 134
Joined: 22.Oct.2008
Status: offline

You can filter the application logs for event 1221 and about MSEXCHNAGEAL logs, the diagnostics loggings might have been bouced up for it.
you check the same in registry:- HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\MSExchaneAl

(in reply to romadona)

Post #: 5

RE: [ask]performing offline defrag - 19.Nov.2008 3:59:05 PM

uemurad

Posts: 5571
Joined: 7.Jan.2004
From: California, USA
Status: online

If you are not seeing any 1221 events, it is possible you aren't running the Exchange maintenance. Open the ESM, expand to your server, and a particular Mailbox Store. Right click and open the Properties. Check the Maintenance interval. If that is not being run, you won't get any 1221 events. You also won't be running the online defrag, which should be run daily.

_____________________________

Regards,

Dean T. Uemura
Microsoft MVP - Exchange
exchangeguy.blogspot.com
uemurad@yahoo.com

(in reply to Naddy)

Post #: 6

RE: [ask]performing offline defrag - 24.Nov.2008 10:08:01 PM

romadona

Posts: 11
Joined: 5.Nov.2008
Status: offline

Dear Dean

maintenence interval has been run daily on midnight,

but the strange is all of my aplication event viewer is " contains msexchangeAL"

there is no other event on this,

why it could be

thanks
Romadona

(in reply to uemurad)

Post #: 7

RE: [ask]performing offline defrag - 24.Nov.2008 10:20:06 PM

Exchange_Geek

Posts: 1026
Joined: 31.Dec.2006
Status: offline

That could be because you might have increased diagnostic logging on MSExchangeAL.

Go to your Exchange Server properties withing Exchange System Manager - Diagnostic Logging - MSExchangeAL - reduce logging on all parameters.

(in reply to romadona)

Post #: 8

RE: [ask]performing offline defrag - 25.Nov.2008 2:20:48 AM

NileshS

Posts: 67
Joined: 27.Apr.2008
Status: offline

quote:

i'm planning to make offline defrag with my exchange database

i have 40 GB drive space contains for exchange database, now total EDB and STM file is 39 GB,

am i possible to run offline defrag,or should i move it first to another drive that bigger than now.

If the database files are 39 GB in size, you would need a free space of about 110% of the database size (which is about 43 Gigs) from the path where you are executing the Eseutil /d.
You have 1 GB free space in the drive where the databases are stored; what is the free space on the drive on which Exchange binaries are installed?

You can also redirect the temp dfrg file that is created during Offline defrag to a drive with enough free space by using the /t parameter alongwith Eseutil /d. Check the article Q192185. So you can attach a drive with enough free space and use it while you run Offline Defrag. This would save time instead of copying the database to a different drive or machine and running defragment from there and copying it back.

As for the MSExchangeAL event ids, you can check if the diagnostic loggings are turned up. If yes then turn them off to normal.

Hope this helps!

(in reply to romadona)

Post #: 9