This is a major Windows upgrade since we will also be upgrading all Windows 2003 servers to SP1.
You can expect 10 minutes of outage on each of our Windows 2003 servers, 2 minutes of outage outage on each of the Win2000 boxes and 30 minutes of outage on our Control Panel. No email outage is expected.
The following are Win2003 servers:
Win7, Win8, Win9, WinCF, MSSQL2, MSSQL3, MSSQL4
Rest of our Windows servers are running Win2000