Hi,
For deploying the clients, please follow the instructions:
1. Export installation packages from SEPM.
2. Copy the install package along with clientremote.exe [ from CD2 ] to each site server.
3. Take an RDP of the server at a site. Use the clientremote.exe, and use the package to be deployed to the clients in that site. So that the deployment will be local to that site and will niot affect your WAN bandwidth.
You can control the bandwidth used by GUP in RU5. So, you can always tune the performance of GUP based on your requirement. GUP will provide delta definitions as well as full set of definitions ( if needed ). Hence, 256 KBPS line to the central office should suffice when using GUP. However, you should control the network traffic of clients from the remote sites by putting the configuration mode as Pull mode. Set the heartbeat interval in suich a way that 2 groups will not contact SEPM at the same time.
SEP is not yet supported on Linux OS.
Embedded database supports 5000 clients in SEPM. So, I think it should suffice. However, please make sure that you take time to time backups of the important files as well as the database. Refer to the Disaster Recovery document for determining which files need to be backed on a regular basis.
Aniket