Starting with eDirectory 8.7, NMAS is automatically inluded and installed
with eDirectory. Furthermore, on NetWare 6.0 servers, the eDirectory
8.6.x
version included a limited version of NMAS. Older versions did not
automatically include NMAS. At that time, NMAS was a product you needed to
purchase separately.
Now you didn't tell us what your environment looks like. So we don't know
what eDirectory versions you have and whether you already have NMAS
installed. However here are a few general rules:
1) It is not required to have NMAS running on all of your servers, but for
users that need NMAS functionality, at least one server holding a master
or R/W replica of the partition containing the user will need to run NMAS