All,Can anyone give me an indication of availability % of a typical single windows 2003 server, and that of a Win2K3 2 node cluster. Need to achieve 99.85% over a yr 24/7TIANels

Getting to only 99.85% availability is not too difficult (it's only about an hour a month of downtime and most people easily do that on non-clustered machines.It does take a little planning and training depending on what applications you're placing on the cluster. I would start with:http://download.microsoft.com/download/f/2/d/f2d201bd-93bb-4a97-a2d9-4a48aed61bbb/HAComputingITVC.doc

Hi, I suggest also referring to the following articles: Quick Start Guide for Server Clusters http://technet.microsoft.com/en-us/library/cc739757(WS.10).aspx Guide to Creating and Configuring a Server Cluster Under Windows Server 2003 http://www.microsoft.com/downloads/details.aspx?familyid=96F76ED7-9634-4300-9159-89638F4B4EF7&displaylang=en Server Clusters Technical Reference http://technet.microsoft.com/en-us/library/cc759014(WS.10).aspx Hope it helps. Tim Quan - MSFT