HP NetStorage 6000 - Manual (Page 110)

Securing Data
Modifying Map Files
8-15
Modifying Files
Since NIS files are read-only, the only files that can be modified are the
user map and group map files. The fields you can edit are:
Note Use care when modifying these files to be sure that the names and
domains are correctly spelled. Otherwise, your clients might experience
some unexpected results.
Field Restrictions
username Any combination of letters and numbers up to 256
characters. This must be a unique value in the user map
file.
UID This numeric-only entry must be unique in the user map
file.
groupname Any combination of letters and numbers up to 256
characters. This must be a unique value in the group map
file.
GID This numeric-only entry must be unique in the group map
file.