When doing a WinNT32 /B install or upgrade, you can use multiple (up to 10) distribution servers to share the file copy load. At least one of these servers must to available at the start of the copy operation.

Here is a command to pull distribution files from 4 sources, 3 servers and the local CD-Rom:

   WINNT32 /B /S:\\JSI1\i386 /S:\\JSI2\I386 /S:\\JSI3\I386 /S:F:\i386