Offline defragmentation clean the whitespace of the exchnage database, is there any other Benefits after running offline difrag, is it increase the performance of the exchange 2003. Dinesh

On Tue, 13 Jul 2010 18:26:18 +0000, Dinesh111 wrote: >Offline defragmentation clean the whitespace of the exchnage database, is there any other Benefits after running offline difrag, is it increase the performance of the exchange 2003. Unless there's a problem with the database there's very little benefit to an offline defrag. In fact, after that database is remounted all the indexes associated with client's "views" (and there are 11 of those for each folder in a mailbox) must be regenerated. The database will also have to grow to allow for new messages. And let's not even consider that the mailboxes won't be usable while the database is dismounted! --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

As I understand it, defragmentation does result in some optimization. -- Ed Crowley MVP "There are seldom good technological solutions to behavioral problems." . "Dinesh111" wrote in message news:8b0d7bea-bcd9-4934-b9f9-7d8b6967e387... Offline defragmentation clean the whitespace of the exchnage database, is there any other Benefits after running offline difrag, is it increase the performance of the exchange 2003. DineshEd Crowley MVP "There are seldom good technological solutions to behavioral problems."

Sorry, ignore my post and follow Rich's advice. I missed that you posted "Offline" in the subject line. -- Ed Crowley MVP "There are seldom good technological solutions to behavioral problems." . "Rich Matheisen [MVP]" wrote in message news:a20e33d1-b46d-466d-9ecb-5b5aea056bbc... On Tue, 13 Jul 2010 18:26:18 +0000, Dinesh111 wrote: >Offline defragmentation clean the whitespace of the exchnage database, is there any other Benefits after running offline difrag, is it increase the performance of the exchange 2003. Unless there's a problem with the database there's very little benefit to an offline defrag. In fact, after that database is remounted all the indexes associated with client's "views" (and there are 11 of those for each folder in a mailbox) must be regenerated. The database will also have to grow to allow for new messages. And let's not even consider that the mailboxes won't be usable while the database is dismounted! --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVPEd Crowley MVP "There are seldom good technological solutions to behavioral problems."

any improvement on I/O performance ?Dinesh

On Wed, 14 Jul 2010 06:17:37 +0000, Dinesh111 wrote: >any improvement on I/O performance ? No. Why do you think it's necessary to compact the database? --- Rich Matheisen MCSE+I, Exchange MVP --- Rich Matheisen MCSE+I, Exchange MVP

Agree with Rich, BUT i have seen one backup time improvement if defrag databse which is larger or defrag disk/LUN. Anil