[Samba] Typo in Samba-3 By Example Book, Chapter 5

Ryan Frantz RyanFrantz at informed-llc.com
Thu Jan 27 20:51:28 GMT 2005

<2 cents>

I think the lesson learned here is that in this case (and many others in
IT in general), 95% of the time, there is no hard and fast rule for the
configuration of a system as complex as Samba.  With the ability to meet
the requirements for, and provide support for, several different options
(i.e. smbpasswd, LDAP, winbind or domain member, domain controller,
simple file and print server, etc), even the developers would be hard
pressed to lay down some standard that could/would apply to every
possible configuration.

In this situation, both experience and constant monitoring are the best
tools for making the kind of determination for resource allocation at a
particular site.

</2 cents>


-----Original Message-----
From: samba-bounces+ryanfrantz=informed-llc.com at lists.samba.org
[mailto:samba-bounces+ryanfrantz=informed-llc.com at lists.samba.org] On
Behalf Of John H Terpstra
Sent: Thursday, January 27, 2005 3:39 PM
To: Kelly S. Smelser
Cc: samba at samba.org
Subject: [Samba] Typo in Samba-3 By Example Book, Chapter 5


I have already replied to the list that this is a typo. In my reply I
provided guidelines for determining how many BDCs you need.

In short, Microsoft recommend at lease one NT4 BDC per 150 clients, but
may require more or fewer depending on the load each server has to

I know of sites that have a single PDC and no BDCs with over 800 Windows

domain member clients - and they have no problems. If your PDC or BDCs
doing nothing other than handling of authentication even 1000 Windows
will pose NO problem - so long as they do NOT all logon at the same

If your PDC and/or BDCs are also acting as file servers, and you have
profiles and folder redirection with Outlook Exchange files that are
live over  the network - even one BDC per 30 clients may not be enough.
all depends on load and responsiveness.

I sincerely apologise for your pain. I never meant to mislead anyone. A
is a typo. My advice is to follow Microsoft NT4 domain design
then monitor your Samba log file and client performance. 

- John T.
John H Terpstra
Samba-Team Member
Phone: +1 (650) 580-8668

The Official Samba-3 HOWTO & Reference Guide, ISBN: 0131453556
Samba-3 by Example, ISBN: 0131472216
Hardening Linux, ISBN: 0072254971
Other books in production.
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