Download Exchange 2013 CU2

Today, MS Exchange Team released Exchange Server 2013 Cumulative Update 2 (CU2) to the Microsoft Download Center. In addition to this article, the Exchange 2013 release notes (updated for CU2) will also be available.
The final build number for Exchange 2013 RTM CU2 is 15.0.712.24.

Changes in Exchange 2013 RTM CU2

In addition to bug fixes, Exchange 2013 RTM CU2 introduces enhancements in the following areas:

  • Per-server database support
  • OWA Redirection
  • High Availability
  • Managed Availability
  • Cmdlet Help
  • OWA Search Improvements
  • Malware Filter Rules


Per-Server Database Support
As mentioned previously, Exchange 2013 RTM CU2 increases the per-server database support from 50 databases to 100 databases in the Enterprise Edition of the product. Please note that this architectural change may not provide any additional scalability as CPU may be a bottleneck, thereby limiting the number of mailboxes you can deploy per-server.

As promised, the Exchange 2013 Server Role Requirements Calculator has been updated for this architectural change.

Upgrading/Deploying Cumulative Update 2

Unlike previous versions, cumulative updates do not use the rollup infrastructure; cumulative updates are actually full builds of the product, meaning that when you want to deploy a new server, you simply use the latest cumulative update build available and do not necessarily need to apply additional Exchange Server updates.
Active Directory Preparation

Prior to upgrading or deploying the new build onto a server, you will need to update Active Directory. For those of you with a diverse Active Directory permissions model you will want to perform the following steps:

Exchange 2013 CU2 includes schema changes. Therefore, you will need to execute
setup.exe /PrepareSchema /IAcceptExchangeServerLicenseTerms
Exchange 2013 CU2 includes enterprise Active Directory changes (e.g., RBAC roles have been updated to support new cmdlets and/or properties). Therefore, you will need to execute
setup.exe /PrepareAD /IAcceptExchangeServerLicenseTerms

Note: If your environment contains only Exchange 2007, and you upgrade to Exchange 2013, keep in mind you cannot deploy Exchange 2010 in that environment at a later time. If you foresee a need to deploy Exchange 2010 servers into your environment, deploy an Exchange 2010 multi-role server (with all four servers roles) prior to executing Exchange 2013 setup.exe /PrepareAD. As long as you retain at least one role of each legacy server, you will continue to be able to install additional servers of that version into your coexistence environment. Once you remove the last server role of a legacy version, you will no longer be able to reintroduce that version into the environment.

Read the full article here.

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