To prepare for upgrading to Lotus Notes/Domino 6, consider the following issues that affect upgrading.
Operating system changes
Lotus Notes 6 and the Domino 6 Administrator support the following operating systems:
Lotus Domino Designer 6 supports the following operating systems: Microsoft Windows 95, Windows 98, Windows NT4, Windows 2000, and Windows XP Professional.
Lotus Domino 6 supports the following operating systems:
Hardware requirements
Be sure to consult the Release Notes for hardware requirements for Lotus Notes/Domino 6. You may need to add capacity to servers or workstations to run Lotus Notes/Domino 6. In addition, features such as transaction logging have additional requirements such as separate drives.
Supported upgrade path
You can upgrade to Notes/Domino 6 directly from Notes/Domino 4.5.x and 4.6.x.
If you are working in a mixed-server environment, and you are using policies, all servers must be at least 4.6.7a or later in order to avoid problems when replicating the Domino Directory.