I've been doing some searching to find the answer as I'm having to manage
a older NDS and it's the first time I've ever had to...

The logon scripts were created and it's mapping a drive as:

MAP G:=DATA1:\SHR_DATA

Well, we have two servers which both have this same folder and some go to
one and some go to another. Problem is, I'm trying to find out how it
decides to which server it will map to. I have one user that will get
the incorrect server with a new login, he does have a default server set
which the one that he needs to map to, but it's the other server that he
is getting the G: drive mapping to.

Just incase this is helpful, the script line prior to this is:

;set logon script modes

NO_DEFAULT
PCCOMPATIBLE
MAP DISPLAY OFF
MAP ERROR OFF

;set standard search drives
MAP ins s16:=SYS:PUBLIC
MAP ins s16:SYS:APP

Thanks.
Michael