I had read in many places that Vista file transfers (copy, move) would be
faster if the feature called “Remote Differential Compression” (RDC) were
turned off. So I did a quickie test today, consisting of copying a 1.91 GB
folder from my main hard drive to a folder on an external USB drive.
Results:



With RDC turned on: 3:23 - three minutes and 23 seconds (with a stopwatch).

With RDC turned off: 2:25 – two minutes and 25 seconds.



So this quickie test reduced the copy time by about one minute, or a 33%
improvement. Not sure it is a valid test, but interesting. I also am
observing much faster file copy and move within my hard drive, remarkably
so. The whole system feels faster. Note that I did not do a reboot after
turning RDC off. I will leave it off, because even though my file
transfers were quite fast before, they are even faster now.



Do other users here have RDC on or off ?



From what I read, it seemed like RDC would be useful for computers in a
network (mine is a stand-alone machine). Anything ‘bad’ likely to happen
from turning off RDC?



"John Hanley" wrote in message news:...
I have no problems or delays copying/moving files in Vista (same as XP),
never have had a problem. I can also copy to the "My xxx" folders with no
problem. Yes, there is a hindrance to copying to the straight C: or
"Program Files', but why would I want to do that anyway, that is not a
place for everyday files and folders, so I am happy that it asks my
permission to move things there (and I don't). I have seen sources that
say to turn off "Remote Differential Compression" to speed things up, but
my RDC is turned on and my file transfers are plenty fast. Still, you
might try disabling RDC and see if it helps. Here's some stuff about RDC
and file copy times:

http://www.vistarevisited.com/2007/1...etwork-part-2/

Control Panel|Programs and Features|Turn Windows Features on or
off|uncheck Remote Differential Compression.


"Dave" wrote in message
...
There shouldn't be a problem as long as you don't try to copy to C:\, or
to "Program Files", or to any of the "My xxx" folders.



--
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"Bill Conner" wrote in
message ...

So what's the deal with the interminable copies and moves with Vista?
Can't MS get anything right? There's something going on in the
background someplace that hoses file and directory transfers *-on the
same computer-*. I turned off the ridiculous indexing for searches, no
luck there. I even tried an external command (mv in Cygwin) and it still
took too long. I suspect that the files I think are available for plain
old copy and move operations are really some demented abstraction - the
"files" and "Folders" are merely representations of some bizarre MS
database scheme. Rather than just talk to the disk sector in the usual
way, a disk request has to first navigate some convoluted maze of really
useless internal dependencies. Bet it's related to Microsoft's version
of security. Any ideas?


--
Bill Conner
Posted via http://www.vistaheads.com

Oh my gosh!!! I can have my life back!!
Turn Remote Differential Compression OFF if you are having any doubts
about performance of Vista file share transfers or shared printing.

go to Control Panel / Programs and Features / Turn Windows Features on
or off = Untick Remote Differential Compression."

Just do it! Don't waste a big part of you life like I did!
I had not realized how much I depend on file and printer sharing on my
little home network until I introduced Vista as a client with an XP
machine sharing its files and a printer.

For the printer, "Access Denied" was the first problem that required a
solution that could not be dreamed up -- local port defined as
//machine/sharedprinter. After that my printing attempts ended the same
as any file transfer attempts -- hung explorer and the need to reboot.
Of course the print queue remained "hung", requiring another unofficial
"best practice" process to clear up.

My problem is assuming I am the one doing something wrong when it was
Vista all aloing!

Rick
(wondering what to do with all the spare time I just freed up, oh ya,
my former life!)


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RickJohn57