http://blogs.technet.com/b/momteam/archive/2007/04/27/opsmgr-2007-performance-and-sizing-guide.aspxThe official tool for capacity and sizing guidance for Operations Manager 2007 is System Center Capacity Planner, which is due out in the second half of calendar 2007. It is available now as a beta here . To download the beta, you will need a Windowsen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.technet.com/b/momteam/archive/2007/04/27/opsmgr-2007-performance-and-sizing-guide.aspx#839314Sat, 28 Apr 2007 17:02:06 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:839314Operations Manager 2007 Deployment Planning<p>This Blog entry references the download location of the System Center Capacity Planner 2007 Beta from the Microsoft Web Site. SC CP 2007 provides detail Sizing and Performance metrics for System Architects designing Exchange 2007 and System Center Operations</p> <img src="http://blogs.technet.com/aggbug.aspx?PostID=839314" width="1" height="1">http://blogs.technet.com/b/momteam/archive/2007/04/27/opsmgr-2007-performance-and-sizing-guide.aspx#835236Sat, 28 Apr 2007 02:44:45 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:835236The Sean Blog<p>I wonder if I could fit more words into the title if I put a little effort into it ;) On the MOM Product</p> <img src="http://blogs.technet.com/aggbug.aspx?PostID=835236" width="1" height="1">