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Cached Mode vs Non-Cached Mode In MS Exchange 2003

September 18th, 2007 | Category: Technology

Non-Cached Mode

Pros

  • Instant access to updates in the exchange system
  • Outlook starts faster
  • Less intense on the server

Cons

  • Like IMAP, emails not accessible when the server is down.

Cached Mode

Pros

  • Accesible when the server is down

Cons

  • Outlook takes longer to start as it syncs all the folders
  • Delay in propagation of changes to system
  • More server intensive

I would stick to non-cached for all desktops, as it behaves much like the current IMAP system with regards to server load and network traffic. For Laptops i would switch to Cached mode, as it enables access to emails while disconnected from the network.

5 Comments so far

  1. Scott September 18th, 2007 2:02 pm

    That’s total crap!

    Cached is the way to go.

  2. T. September 19th, 2008 10:30 am

    Yeah, right. Try cached mode when you have users with mailboxes of over 2GB and see what happens. Especially if the OST gets “checked for errors”. Your support overhead will increase a great deal.

    Online mode for directly connected desktops. Cached mode for wireless and laptop users. That’s the smart play. Used cached mode across the board if your users are limited to, say, 500MB mailboxes or you’re a masochist.

  3. Jantliaipt December 28th, 2008 2:23 pm

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  4. Justin December 16th, 2009 6:18 pm

    Have about 20 or so users in an office connected with a DS1 to our data center. I was always getting complaints about it being “slow”.

    I setup Cisco NetFlow on the router, and 90% of the traffic was to/from the exchange server. Enabled cached mode on all the systems, and traffic dropped down to

  5. Justin December 16th, 2009 6:21 pm

    Have about 20 or so users in an office connected with a DS1 to our data center. I was always getting complaints about it being “slow”.

    I setup Cisco NetFlow on the router, and 90% of the traffic was to/from the exchange server. Enabled cached mode on all the systems, and traffic dropped down to less than 20% so if you have remote offices cached mode is the way to go.

    Several of our users have mailboxes in the 2-3GB range, and its improved/reduced network traffic considerably.

    WordPress cut off my post. It cannot parse greater than or less than signs. Whatever.

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