[ExchangeList] Re: Exchange offline defrag timeframe

  • From: "Larry Fry" <larry.fry@xxxxxxxxxxxxxxx>
  • To: <exchangelist@xxxxxxxxxxxxx>
  • Date: Thu, 15 Nov 2007 10:56:18 -0700



Offline defragmentation creates a new database by copying all records
and tables from the old database into the new database. Because this is
a copy, defragmentation requires free disk space equal to the size of
the database (actually, you'll need 110% of free space).


Microsoft recommends a conservative 5 - 7 GB per hour for a defrag
operation, which means that your server will be offline for as long as
it takes, assuming no hardware failures will occur.





Larry Fry

Sr. Systems Administrator, MarkMonitor

391 N. Ancestor Pl. Suite 100

Boise, ID  83704

Direct: +1.208-389-5778

Cell: +1.208.794.5223


www.markmonitor.com <http://www.markmonitor.com/> 


From: exchangelist-bounce@xxxxxxxxxxxxx
[mailto:exchangelist-bounce@xxxxxxxxxxxxx] On Behalf Of Danny
Sent: Thursday, November 15, 2007 10:10 AM
To: exchangelist@xxxxxxxxxxxxx
Subject: [ExchangeList] Exchange offline defrag timeframe


Any idea how long and how much disk space I will need to offline defrag
the following platform?


Server: Xeon 3.6Ghz, 4GB RAM, RAID 5 on 4 15K RPM SAS drives

Exchange Server 2003 SP2
Primary Storage Group = 90GB
Secondary Storage Group = 15GB





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