Need help/info/tips with following user credentials - thin client

[DAGAZ]

Hi y@ll,
for some time I used PCLOS and LTSP to keep a little school network for PC classes happily running (30 PC's no big wupp)
Server has 8 GB ram and is not even at 60 % load. It could handle 90 PC's before slowing down.
However, due to lack of funds our school looks into Linux and ditching M$ windoze.
So far they have ~250 PC's and to use LTSP I would need ~ 20 GB ram for the server... Did I mention the school is broke.

Is there a way to set up a server with PCLOS and store/maintain all logon credentials in some way?
If yes, how would the client connect to it? PXE or nomachine, vnc?

I think they call it active directory under windoze, but I do not now M$ stuff.

Any help is very appreciated.

Thanks

[AS]

Hi DAGAZ,

a possible solution could be LDAP (openldap) the following could be a starting point:
http://www.openldap.org/

also, you may want to consider K12Linux, specialized server distro around ltsp and education, (or at least borrow some idea ...)
https://fedorahosted.org/k12linux/

AS