Windows Server

Bob Hollness · Guest

Hi all.

All I read about DFS is the good things and how wonderful it is. Does
this mean that there are no downsides at all??? Before I implement it
I just want to make sure that I am aware of everything and any
possible disadvantages there are with it.

Can anyone help?

P.S. I am not so bothered about file replication as I will not be
replicating files. I am more interesting in the virtual root aspect of it.

Thanks

Glenn L · Guest

If you really want to understand how this component is put together and how
it works, then I recommend an excellent article that describes this
component in great detail.
DFS technical reference.

http://www.microsoft.com/Resources/Documentation/windowsserv/2003/all/techref/en-us/w2k3tr_dfs_intro.asp

Incidently, MS has a growning library of technical references on various
windows components, that IHMO are better than anything I have seen thusfar
from MS.

--
Glenn L
CCNA, MCSE 2000, MCSE 2003 + Security

"Bob Hollness" <bob@blockbuster.com> wrote in message
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Bob Hollness · Guest

Thanks Glenn. I already understand the concepts of DFS and I had to study
it for my MCSE as well. I was just trying to find out if anybody knew of
any disadvantages or things that might dissuade me from using. These sort
of things never came up in the exams!!!!

Bob

"Glenn L" <the.only@gmail.com> wrote in message
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Guest · Posted: Fri Oct 29, 2004 6:17 pm Post subject: Re: DFS

If it falls over it will bring FRS down with it and imho this is a bad
implmintation because if you have no frs your domain is broken

Bob Hollness · Guest

Thanks, but would this still be a problem if I had 2 domain controllers and
was not replicating files?

Bob

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Guest · Posted: Fri Oct 29, 2004 6:49 pm Post subject: Re: DFS

Bob Hollness wrote:
Yes because FRS replocates sysvol and you will have problems with
consistancy between servers with policies, adding users ect.
but it is also unlikely that if you are not using replocation on DFS
that it will fall over.
Are you thinking of using dfs for the FQDN mapping? or is there another
reason?

Bob Hollness · Guest

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Jill Zoeller [MSFT] · Guest

The DFS you set up for file systems is a completely separate technology from
FRS. And you are right--you don't have to use FRS to use DFS.

SYSVOL referrals are a special type of DFS referral, and SYSVOL is
replicated by FRS, but this shouldn't be any concern for your
implementation. (Details about this are described in the techref at
http://www.microsoft.com/resources/documentation/WindowsServ/2003/all/techref/en-us/Default.asp?url=/resources/documentation/windowsServ/2003/all/techref/en-us/w2k3tr_dfs_how.asp.)

DFS works best when all its dependencies are in good working order. (The
front of the techref above describes these dependencies.) Anything
misconfigured here and DFS might behave unexpectedly. Having your sites set
up correctly also helps DFS order the referrals properly--the section
"Situations in Which Clients Access Unexpected Targets" in the techref
describes misconfigurations that can cause clients to go to unexpected
targets.

You'll also want to follow our recommendations for namespace sizing. These
recommendations are described in the "Designing and Deploying File Servers"
chapter listed at www.microsoft.com/dfs. You'll get the most DFS features if
all your DCs and root servers are running W2K3. You lose the ability to
consistently sort targets in referrals by lowest cost if any of your DCs or
root servers aren't running W2K3. There are also some interoperability
issues when you have root servers running a mix of W2K3 and W2K--these
issues are described in the techref and the file server chapter.

OK, and one more plug for the techref--much of the information in this file
has never been published before, so you might discover something new. :-)

--
This posting is provided "AS IS" with no warranties, and confers no rights.

"Bob Hollness" <bob@blockbuster.com> wrote in message
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Bob Hollness · Guest

Thanks, I'll start digesting this document!

Is there anybody reading this group that has any real-world bad experiences
with DFS (not for FRS though)???

Bob

"Jill Zoeller [MSFT]" <jillz@online.microsoft.com> wrote in message
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