[THIN] Re: DFS and Profiles
- From: "Nail, Larry" <lnail@xxxxxx>
- To: <thin@xxxxxxxxxxxxx>
- Date: Mon, 8 Sep 2003 21:44:07 -0500
I belive that the timeouts are long enough to handle that. I haven't
seen that as a problem anyway, but our WAN connectivity here in the
states is quite good and we keep all the profiles within that WAN.
_____
From: Steve Greenberg [mailto:steveg@xxxxxxxxxxxxxx]
Sent: Saturday, September 06, 2003 10:01 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: DFS and Profiles
One problem though is that if the profiles are huge, or scattered across
a WAN or busy LAN, isn't there a potential problem with timeouts leading
the client to get halfway through the profile download or upload and
then having to re-poll the DFS tree? If it has to start the process
over, or continue it this could glitch the profile process, or, what if
the client is then re-directed to a different version of the profile on
a different store?
the other thing you mentioned is that you use a NetApp, which I also put
in my frist reply. I am not sure that DFS is as elegant or reliable when
using NT file servers.....
Steve Greenberg
Thin Client Computing
34522 N. Scottsdale Rd. suite D8453
Scottsdale, AZ 85262
(602) 432-8649
(602) 296-0411 fax
steveg@xxxxxxxxxxxxxx
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx
[mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Nail, Larry
Sent: Friday, September 05, 2003 10:42 PM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: DFS and Profiles
If you're talking about Microsoft's Distributed File system,
I've heard that comment before about DFS & user profiles... it's a bunch
of baloney. DFS is a file system redirector... you connect to the tree,
the tree tells you which server to connect to & its out of the story.
The only communications back to the DFS tree are when your SMB session
state times out or the file share becomes unavailable. I don't remember
how long the session time out it is, but its a pretty good amount of
time. If your SMB session state times out, the client goes back to the
DFS tree, asks again which server do I connect to & starts over. If a
server connection dies, it goes back to the tree after it's complete
with it's retry routine, and asks the tree for the next server sharing
that DFS leaf (incase you're using a DFS leaf against multiple servers).
I've been using DFS against a Netapp 860 cluster with 8000+
shares (& a 760 before that)... close to 2000 of them are WTS
profiles... never, ever heard a peap. In fact because of DFS, I've
moved data from one volume on the pair to another volume on the partner
& with ZERO downtime... thank you SnapMirror & DFS.
My humble opinion is to fire away... DFS is just a redirector...
_____
From: Joe shonk [mailto:jshonk_dhl@xxxxxxxxx]
Sent: Friday, September 05, 2003 11:43 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] DFS and Profiles
I've been doing some research on using a DFS Share to store user
profiles. From what I understand, it is generally not recommended to
store profiles on a DFS as DFS was not designed to handle it. Also,
there are examples of systems that are currently using DFS to store
profiles. However, I cannot find any concrete information that
supports one theory over another.
Does anyone know of any white papers, faq, anything that might
be of help?
Joe
_____
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