Planning on upgrading to OES2 SP2a and need to know any preparation that needs to take place before upgrading or extending schema:

We use the following:
1. One Netware 6.5 SP8 server with 8.4.4 (server holding masters)
2. IDM bundle 3.5.1 running on the NW 6.5 SP8 server.
3. Novell Storage Manager (2.5.1)
4. Zenworks (7?, definitely not 10)
5. Other servers are running Netware 6.5 SP7/eDir or
OES1 SP2/eDir
6. A few other servers are running earlier NW 6.5 SP6+/eDir, but are
scheduled to be removed sometime in the near future.

All servers involved are 64-bit servers and plan on moving to the 64-bit version of OES SP2.

Any input into this project is greatly appreciated.