Solved

Outlook 2003 Cached Exchange Mode vs. Mailbox Cleanup Wizard - Mailbox SIzes

Posted on 2007-03-22
5
680 Views
Last Modified: 2010-08-05
Hello:

I am the Email Admininstrator for a company with a single Exchange 2003 SP2 server that houses approximately 300 mailboxes on it; our clients access their email with Outlook 2003 from their desktops.

A number of our users have Cached Exchange Mode loaded in their Outlook profiles.
We normally set a mailbox cap in Active Directory to force our users to keep their mailboxes under control; however, a growing confusion is occurring regarding apparent discrepancies between the folder sizes as reported in the Mailbox Cleanup Wizard; i.e., the folder sizes differ between the local folders and the server folders (which I suppose is to be expected, though I'm not sure why); the bigger confusion, however, appears to be which set of folder sizes the user should "go" by in determining which folders should be pared back via archiving and/or deleting of data - the local folder sizes or the server folder sizes, in light of the fact that the 2 are synchronizing with each other.  Logic would suggest the server-side size of the mailbox would be triggering the mailbox size warnings, but I'm not sure that Outlook isn't reporting information back to the Exchange Server that might be launching the warning messages based on the local file data sizes.  I just would like to be sure so that I am not leading my users astray on this.

Could someone provide me with a brief explanation or point me to a possible source of information on this?  I've been searching around but haven't found anything that addresses this issue.   Please advise; thanks.
0
Comment
Question by:nmorris510
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 3
  • 2
5 Comments
 
LVL 10

Expert Comment

by:MATTHEW_L
ID: 18773889
First off, the server side folder sizes are going to be what matters for mailbox size, mailbox manager policies etc.  The reason that you end up with some differences is the following:

When you run in cached mode, the local workstation has an OST file that mail is stored in.  Because this file is being built on the workstation and things are being deleted from it, added etc, you will wind up with slack space in the file.  The local size is the size that is being taken up in the OST file.  The server size is the actual size that is in the Exchange database.  Although, the server size may not even be the actual size in the Exchange database due to things like single instance storage where only one copy of a message is stored and pointers are placed to that one copy etc.

Hope this helps a bit.

0
 

Author Comment

by:nmorris510
ID: 18774031
Thanks for the quick response, Matthew!

That makes sense; I didn't realize that .OST files behaved in a similar fashion to the way Exchange's DB files do in terms of "slack" space!  Is it possible to "defrag" an .OST file?  Would you even want to?  I wonder. . .
0
 
LVL 10

Accepted Solution

by:
MATTHEW_L earned 250 total points
ID: 18774078
I would assume you could use any of the Microsoft Tools relating to PST on an OST.  I could be wrong.  I see no reason to really do anything with on OST.  You can delete it and reopen Outlook and let it regenerate which may clean it up a bit.  There really isn't any real need to do mainteance on it though.
0
 

Author Comment

by:nmorris510
ID: 18774172
I agree that it's probably not a good idea to do anything to the .OST files.  I'll tell my users to go by the information reported from the server for folder sizes.

Thanks again, Matthew for your help; much appreciated.
0
 
LVL 10

Expert Comment

by:MATTHEW_L
ID: 18774190
No problem, good luck.
0

Featured Post

Complete VMware vSphere® ESX(i) & Hyper-V Backup

Capture your entire system, including the host, with patented disk imaging integrated with VMware VADP / Microsoft VSS and RCT. RTOs is as low as 15 seconds with Acronis Active Restore™. You can enjoy unlimited P2V/V2V migrations from any source (even from a different hypervisor)

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article describes how to import an Outlook PST file to Office 365 using a third party product to avoid Microsoft's Azure command line tool, saving you time.
Outlook for dependable use in a very small business   This article is about using the Outlook application (part of Microsoft Office) in a very small business, or for homeowners where dependability and reliability are critical requirements. This …
CodeTwo Sync for iCloud (http://www.codetwo.com/sync-for-icloud?sts=6554) automatically synchronizes your Outlook 2016, 2013, 2010 or 2007 folders with iCloud folders available via iCloud Control Panel. This lets you automatically sync them with…
Established in 1997, Technology Architects has become one of the most reputable technology solutions companies in the country. TA have been providing businesses with cost effective state-of-the-art solutions and unparalleled service that is designed…

691 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question