Slow network file copy in VSS enabled volume

[Guest Mycroft Holmes]

Hi,

 

Here's my problem: we have a server with tons of drives and partitions C..H.

each partition is about 500MB

operating system is Windows 2003 x64 SP1.

Most clients are non-windows laptops connecting via SAMBA.

We never had issues, but recently we enabled shadow copies on partitions F

and G; we noticed that when clients perform a large file transfer (say, a

700 mb file), the transfer rate is as fast as usual, but the progress bar on

the client pauses near the end, it stays there for a long time (e.g. 1

minute) and eventually it finishes ok, the file has been written correctly.

In the "idle" time the server has moderate cpu activity (say 10%) and some

I/O.

 

Can anyone point me in the right direction in fixing the problem?

thanks,

MH

[Guest Mycroft Holmes]

Re: Slow network file copy in VSS enabled volume

 

 

"Mycroft Holmes" <m.holmes@nospam.it> wrote in message

news:O04OXWGIIHA.1168@TK2MSFTNGP02.phx.gbl...

> Hi,

>

> Here's my problem: we have a server with tons of drives and partitions

> C..H. each partition is about 500MB

> operating system is Windows 2003 x64 SP1.

> Most clients are non-windows laptops connecting via SAMBA.

> We never had issues, but recently we enabled shadow copies on partitions F

> and G; we noticed that when clients perform a large file transfer (say, a

> 700 mb file), the transfer rate is as fast as usual, but the progress bar

> on the client pauses near the end, it stays there for a long time (e.g. 1

> minute) and eventually it finishes ok, the file has been written

> correctly.

> In the "idle" time the server has moderate cpu activity (say 10%) and some

> I/O.

>

> Can anyone point me in the right direction in fixing the problem?

> thanks,

> MH

>

 

note that the same problem is mentioned here

 

http://forums.macosxhints.com/showthread.php?t=66468

 

(just search "5 seconds remaining" in the page)

 

 

also, it seems that the issue does not occur if shadow copies are turned

off.

any comment?