About a year and a half ago I have tested this as I was doing a migration from 
NDS to AD. Worked like a charm! (I even did tests for legacy clients like W9x 
as those were my biggest concern, did not find anything) The NDS groups were > 
64 chars and accepted all kinds of funny chars. I had to cut them down to < 64 
chars.
 
Although the samaccountname accepts 256 chars, the full name (common name) 
accepts only 64 chars. And in cases like this I like to use the weakest link 
(smallest value) which is the length of the full name. (that us why I cut them 
down to < 64 chars in the NDS so I did not experience any crap during the 
migration)
 
Even in NT4 you could create groups > 20 chars....
 
User Manager for domains allowed 20 chars and some other did the same. However, 
several third party tools like Hyena and others go beyond that limit. Even if 
you use scripts you can creare groups > 20 chars. However you will not be able 
to manage them with user manager for domains. To my knowledge, AD has no 
problem with groups > 20 chars
 
By the way.. I remember another thread about this a while ago. Search the 
archives for it as I think you'll find more info on this
 
Met vriendelijke groeten / Kind regards,
Ing. Jorge de Almeida Pinto
Senior Infrastructure Consultant
MVP Windows Server - Directory Services
 
LogicaCMG Nederland B.V. (BU RTINC Eindhoven)
(   Tel     : +31-(0)40-29.57.777
(   Mobile : +31-(0)6-26.26.62.80
*   E-mail : <see sender address>

________________________________

From: [EMAIL PROTECTED] on behalf of Joe Kaplan
Sent: Tue 2006-06-06 02:03
To: [email protected]
Subject: Re: [ActiveDir] OT: Samaccountname attribute (20 char limit) not 
applicable to gr oups?



Sure enough, rangeUpper is 256.  I'm not sure where I got that 64 thing, but
I'm guessing it was from memory and that was not up to the task again.

Anyone else?  Is it safe or not for groups to have a sAMAccountName > 20
characters but <= 64?  I'm going to assume that users definitely need to be
<= 20.

Joe K.
----- Original Message -----
From: Al Mulnick
To: [email protected]
Sent: Monday, June 05, 2006 5:46 PM
Subject: Re: [ActiveDir] OT: Samaccountname attribute (20 char limit) not
applicable to gr oups?


Interesting.  The online version I see says rangeupper is 256.  Not sure how
important that is, but...
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/adschema/adschema/a_samaccountname.asp

Given the purpose of samaccountname I have a hard time believing something
doesn't rely on that being 20 chars. Not to say that they haven't been since
fixed, but that's too tempting for most folks not to just say, "well, to be
usable it's limited to 20 chars and since Microsoft has that number
published everywhere, we'll just assume it's 20 chars all the time..." or
something like that.



Al


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