What new does Exchange 2013 CU1 bring?

Favad Qaisar 18 May 2013 0




After much waiting, finally the last piece of the Exchange 2013 puzzle is out- Exchange 2013 RTM CU1. Putting this piece in its place, Exchange 2013 can be easily used along following servers, either individually or with the mix of these servers.  

1. Exchange 2010 Service Pack 3
2. Exchange 2007 Service Pack 3 (Update Rollup 10)

In case of Exchange 2003, Microsoft does not support direct upgrade. It requires one to first upgrade to either Exchange 2007 or Exchange 2010 and then to Exchange 2013.

New Functionalities:

Exchange 2013 RTM CU1 not only comes up with enhancement in functionalities but also brings solutions to most of the bugs prevailing in earlier versions. Let’s look them up.

    • Microsoft  has added an address book policy routing agent in CU1 which allows the public folders to be  allows groups to own other groups, without the need of running a script.
    • Exchange 2012 is made up of an entirely different architecture if compared with its earlier versions. It is introduced with only two server roles.
      1. Mailbox Role
      2. Client Role
    • It is allowed to deploy CAS and Mailbox servers either as multi-role server or as individual servers.  However, there must be minimum one CAS 2013 installed or otherwise managing a Mailbox server will become an issue since CAS is the one which is responsible for all web request proxies. When it comes to updating servers, as long as you have dedicated CAS and Mailbox servers, either can be updated first, no restriction. However there is a restriction on uninstalling. You can read it in Notes.
    • Size of mailboxes in Exchange 2013 happen to be approx 30% bigger. Credit goes to more accurate space calculations. This may result in an increased user quotas.
    • Unified Messaging management is also included by enhancing The Exchange Administration Center (EAC).

Important Notes:

  • Organizations having Exchange 2007 environment, with an intention to add Exchange 2010 in future time, must put at least one legacy server role preserved before installing Exchange 2013 CU1.  The Exchange team clearly warns that if the last server role of any legacy version is removed, it will be no longer possible to introduce that same version back into the environment. Meaning, adding any 2010 servers once 2013 is installed, will not be possible.
  • Microsoft has put up a restriction i.e. if both server roles (Client and Mailbox) are installed on one machine then they can’t be uninstalled individually. They must be uninstalled at the same time.
  • Microsoft hinted in its announcement that System Center Operations Manager supported by CU1 will hit the market in near future, though no clear date or time was mentioned.




Favad Qaisar (51 Posts)

I am a Unified Communications Engineer. Over the last 3 years, I have been working dedicatedly on OCS/LYNC and Exchange 2007/2010. I was responsible for getting my Company Microsoft’s Unified Communication Voice Certified Partner status. Occasionally, I like to share my experiences on the latest developments in the Unified Communications industry.

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