Sean Martin <seanmarti...@gmail.com> wrote on 08/28/2009 02:31:17 PM:

> You can certainly implement DFS without replication. You would 
> simply need to follow your same procedures of backup/restore, 
> copying, etc. when a user moves from one site to another. It would 
> just eliminate the need for modifying the user's profile path. Keep 
> in mind that you'll need to modify your folder redirection GPO with 
> the DFS path as well.

AH! DFS moved back into the realm of possible (for us). Without 
replication, I don't need as the full amount of storage at each site, 
enough to support *all* users; I'd really only need enough storage to 
support the number of users who can physically fit into the site ... (plus 
some as overflow, of course).

> When a user accesses a DFS Namespace, DFS will determine which 
> member of that namespace to direct the connection to based on the 
> site they're logging in from. 

So I would need to make sure all my site info is correct and up-to-date 
...

So what happens in this case:

User at Server_A/Site_A moves to Site_B. I don't know about this move. 
When the user logs in, DFS tries to map his profile to a server in his 
site. But there is no server in Site_B with a copy of his files (yet).

Does he get an error? 
Does he just (transparently) connect long-distance back to his files at 
Site_A?
When I do the backup/restore of his files to Site_B, he should Just Work.
(He'd have to be logged out while I did the backup/restore, right?)

> If you decided to use replication, DFS-R in Windows 2003 has pretty 
> good compression capabilities, as well as the ability to only 
> replicate changes to files. I had 600GB of user profiles/home 
> directories replicating between 4 servers and I routinely had 
> a reduction rate of 97% or greater. Example: If over a certain 
> period of time, 1TB of data was modified and needed to replicate, 
> DFS-R's compression and replication would only transfer 31GB.

Good to know. Thanks!

>  
> Sean

> On Fri, Aug 28, 2009 at 8:43 AM, <michael.le...@pha.phila.gov> wrote:
> Jon Harris <jk.har...@gmail.com> wrote on 08/28/2009 12:29:07 PM:
> 
> > I don't know but I think DFS in 2000 was pretty poorly done, 2003
> > was better and I hear the 2008 fixed a lot of things so he may have
> > issues with DFS.  That is assuming he is still running all of his
> > file servers on 2000, he does not say.
> 
> 4 file servers are Win2003; one is still Win2000. That one is scheduled 
to
> be upgraded to Win2003 in a couple months.
> 
> We are also going to be going to 2003 AD later this year. (and 2008 AD
> next year)
> 
> So at some soon-to-be furute point, I will have 5 file servers, all at
> 2003 AD, scattered about, all in a 2003 AD. If I do implement DFS, it
> would be after all that.
> 
> I guess I'm still unclear about the replication aspects of DFS. I get 
the
> idea that I wouldn't need (num of servers x amount of each server 
storage)
> at each site, but I am struggling to understand then how I am cutting 
out
> bandwidth. I can see where I might be reducing it, but:
> 
> If a person moves from Server #1 to Server #2, and I am using DFS, how
> (what method occurs) does that user not be accessing his/her files over
> the WAN link, if I am not replicating all their files to Server #2? I
> suppose that is my fundamental knowledge block, at the moment.
> 
> 
> ~ Finally, powerful endpoint security that ISN'T a resource hog! ~
> ~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/>  ~
> 
> 
> 

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