O'Reilly logo

Microsoft® Exchange Server 2010 Inside Out by Tony Redmond

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

An increased load for the CAS

It’s obvious that the relocation of the MAPI endpoint to the RCA layer running on CAS servers has transferred workload from mailbox servers, specifically additional CPU processing. For this reason, Microsoft recommends that Exchange 2010 designs should use a ratio of 3:4 for CAS servers to mailbox cores when you determine server configuration for a site. For example, if the London site has eight mailbox servers, it will need six CAS servers to handle the incoming connections from Outlook clients. This is a very simple calculation and the final number of CAS servers required to handle the load depends on the following factors:

  1. The number of mailboxes hosted on each server and the size of an average mailbox.

  2. The mix of ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required