Hi,

I've been trying to copy about 60GB of small files (tens of thousands
of them) in a deep file structure from a NAS box to a Virtual Server
2008 using both Robocopy and Explorer. Both servers are in the same
rack.

The speed varies from 3MB/s to 15MB/s, but averaging under 10MB/s. To
an ignorant person like me that seems a bit low. Does that seem
correct?

I should mention that I was pretty much the only person on the LAN at
the time.



I'm afraid I don't know what I'm talking about here...

Cheers,

James

Hello JimLad,

See here about slow copy problem within Windows server 2008:
http://msmvps.com/blogs/acefekay/arc...-problems.aspx

Best regards

Meinolf Weber
Disclaimer: This posting is provided "AS IS" with no warranties, and confers
no rights.
** Please do NOT email, only reply to Newsgroups
** HELP us help YOU!!! http://www.blakjak.demon.co.uk/mul_crss.htm

> Hi,
>
> I've been trying to copy about 60GB of small files (tens of thousands
> of them) in a deep file structure from a NAS box to a Virtual Server
> 2008 using both Robocopy and Explorer. Both servers are in the same
> rack.
>
> The speed varies from 3MB/s to 15MB/s, but averaging under 10MB/s. To
> an ignorant person like me that seems a bit low. Does that seem
> correct?
>
> I should mention that I was pretty much the only person on the LAN at
> the time.
>
> I'm afraid I don't know what I'm talking about here...
>
> Cheers,
>
> James
>

On 6 Jan, 20:08, Meinolf Weber [MVP-DS] <meiweb@(nospam)gmx.de> wrote:

> Hello JimLad,
>
> See here about slow copy problem within Windows server 2008:http://msmvps.com/blogs/acefekay/arc...-chimney-and-r...
>
> Best regards
>
> Meinolf Weber
> Disclaimer: This posting is provided "AS IS" with no warranties, and confers
> no rights.
> ** Please do NOT email, only reply to Newsgroups
> ** HELP us help YOU!!!http://www.blakjak.demon.co.uk/mul_crss.htm
>
>
>

> > Hi,

>

> > I've been trying to copy about 60GB of small files (tens of thousands
> > of them) in a deep file structure from a NAS box to a Virtual Server
> > 2008 using both Robocopy and Explorer. Both servers are in the same
> > rack.

>

> > The speed varies from 3MB/s to 15MB/s, but averaging under 10MB/s. To
> > an ignorant person like me that seems a bit low. Does that seem
> > correct?

>

> > I should mention that I was pretty much the only person on the LAN at
> > the time.

>

> > I'm afraid I don't know what I'm talking about here...

>

> > Cheers,

>

> > James- Hide quoted text -

>
> - Show quoted text -

Hi,

Thanks for that - all a bit advanced for me as I'm not a server
expert.
Obviously I'm in a virtualised environment - are you basically
implying that this RSS features causes trouble with all virtualised
environments and should be turned off?
Also, what kind of speed should I be expecting?

Cheers,

James

In article <fef73c84-d14a-4315-ac57-55bb2fe80d36
@a15g2000yqm.googlegroups.com>, jamesdbirch@newsgroup says...

....

> > > I've been trying to copy about 60GB of small files (tens of

thousands

> > > of them) in a deep file structure from a NAS box to a Virtual Server
> > > 2008 using both Robocopy and Explorer. Both servers are in the same
> > > rack.

> >

> > > The speed varies from 3MB/s to 15MB/s, but averaging under 10MB/s. To
> > > an ignorant person like me that seems a bit low. Does that seem
> > > correct?

....

>
> Hi,
>
> Thanks for that - all a bit advanced for me as I'm not a server
> expert.
> Obviously I'm in a virtualised environment - are you basically
> implying that this RSS features causes trouble with all virtualised
> environments and should be turned off?
> Also, what kind of speed should I be expecting?

What is your network speed? if it's a 100mbps (small 'b') wire speed
network, then 10 - 15 MBps (capital 'B') is about all you can expect.
Note that lots of small files will also be slower than fewer big ones
because of the overhead of opening and closing each individual file.

D

On 6 Jan, 20:53, David Kerber
<ns_dkerber@newsgroup_warrenrogersassociates.com> wrote:

> In article <fef73c84-d14a-4315-ac57-55bb2fe80d36
> @a15g2000yqm.googlegroups.com>, jamesdbi...@newsgroup says...
>
> ...
>
>
>

> > > > I've been trying to copy about 60GB of small files (tens of

> thousands

> > > > of them) in a deep file structure from a NAS box to a Virtual Server
> > > > 2008 using both Robocopy and Explorer. Both servers are in the same
> > > > rack.

>

> > > > The speed varies from 3MB/s to 15MB/s, but averaging under 10MB/s. To
> > > > an ignorant person like me that seems a bit low. Does that seem
> > > > correct?

>
> ...
>
>
>

> > Hi,

>

> > Thanks for that - all a bit advanced for me as I'm not a server
> > expert.
> > Obviously I'm in a virtualised environment - are you basically
> > implying that this RSS features causes trouble with all virtualised
> > environments and should be turned off?
> > Also, what kind of speed should I be expecting?

>
> What is your network speed? *if it's a 100mbps (small 'b') wire speed
> network, then 10 - 15 MBps (capital 'B') is about all you can expect. *
> Note that lots of small files will also be slower than fewer big ones
> because of the overhead of opening and closing each individual file.
>
> D

Hi,

We are on a 1Gbps network, so it does seem rather slow.

James

In article <7c70371e-77f4-4e8a-8edb-0fa61b2b3ff8
@s31g2000yqs.googlegroups.com>, jamesdbirch@newsgroup says...

>
> On 6 Jan, 20:53, David Kerber
> <ns_dkerber@newsgroup_warrenrogersassociates.com> wrote:

> > In article <fef73c84-d14a-4315-ac57-55bb2fe80d36
> > @a15g2000yqm.googlegroups.com>, jamesdbi...@newsgroup says...
> >
> > ...
> >
> >
> >

> > > > > I've been trying to copy about 60GB of small files (tens of

> > thousands

> > > > > of them) in a deep file structure from a NAS box to a Virtual Server
> > > > > 2008 using both Robocopy and Explorer. Both servers are in the same
> > > > > rack.

> >

> > > > > The speed varies from 3MB/s to 15MB/s, but averaging under 10MB/s. To
> > > > > an ignorant person like me that seems a bit low. Does that seem
> > > > > correct?

> >
> > ...
> >
> >
> >

> > > Hi,

> >

> > > Thanks for that - all a bit advanced for me as I'm not a server
> > > expert.
> > > Obviously I'm in a virtualised environment - are you basically
> > > implying that this RSS features causes trouble with all virtualised
> > > environments and should be turned off?
> > > Also, what kind of speed should I be expecting?

> >
> > What is your network speed? *if it's a 100mbps (small 'b') wire speed
> > network, then 10 - 15 MBps (capital 'B') is about all you can expect. *
> > Note that lots of small files will also be slower than fewer big ones
> > because of the overhead of opening and closing each individual file.
> >
> > D

>
> Hi,
>
> We are on a 1Gbps network, so it does seem rather slow.

Yes, it does. Have you checked the machines on both ends to be sure
their NICs are running at 1Gb speed?

Also, is it possible the files on the source drive are badly fragmented?
That significantly slow read speeds. On our Dell Power Edge, I was able
to cut backup times by over 30% by defragmenting the main NAS drive.
People said that defragging wouldn't help a RAID 5 setup, but it sure
did in my case.

D

Hi!

Is this a real NAS or one of the 200 to 500$ boxes? If 2nd then you get what
you have paid. I have a 300$ WD NAS and its a pain.

Wolfgang

"JimLad" <jamesdbirch@newsgroup> schrieb im Newsbeitrag
news:3ce562e6-f2da-44a2-9778-724630ad2638@newsgroup

> Hi,
>
> I've been trying to copy about 60GB of small files (tens of thousands
> of them) in a deep file structure from a NAS box to a Virtual Server
> 2008 using both Robocopy and Explorer. Both servers are in the same
> rack.
>
> The speed varies from 3MB/s to 15MB/s, but averaging under 10MB/s. To
> an ignorant person like me that seems a bit low. Does that seem
> correct?
>
> I should mention that I was pretty much the only person on the LAN at
> the time.
>
> I'm afraid I don't know what I'm talking about here...
>
> Cheers,
>
> James

"JimLad" <jamesdbirch@newsgroup> wrote in message
news:fef73c84-d14a-4315-ac57-55bb2fe80d36@newsgroup

> On 6 Jan, 20:08, Meinolf Weber [MVP-DS] <meiweb@(nospam)gmx.de> wrote:

>> Hello JimLad,
>>
>> See here about slow copy problem within Windows server
>> 2008:http://msmvps.com/blogs/acefekay/arc...-chimney-and-r...
>>
>> Best regards
>>
>> Meinolf Weber
>> Disclaimer: This posting is provided "AS IS" with no warranties, and
>> confers
>> no rights.
>> ** Please do NOT email, only reply to Newsgroups
>> ** HELP us help YOU!!!http://www.blakjak.demon.co.uk/mul_crss.htm
>>
>>
>>

>> > Hi,

>>

>> > I've been trying to copy about 60GB of small files (tens of thousands
>> > of them) in a deep file structure from a NAS box to a Virtual Server
>> > 2008 using both Robocopy and Explorer. Both servers are in the same
>> > rack.

>>

>> > The speed varies from 3MB/s to 15MB/s, but averaging under 10MB/s. To
>> > an ignorant person like me that seems a bit low. Does that seem
>> > correct?

>>

>> > I should mention that I was pretty much the only person on the LAN at
>> > the time.

>>

>> > I'm afraid I don't know what I'm talking about here...

>>

>> > Cheers,

>>

>> > James- Hide quoted text -

>>
>> - Show quoted text -

>
> Hi,
>
> Thanks for that - all a bit advanced for me as I'm not a server
> expert.
> Obviously I'm in a virtualised environment - are you basically
> implying that this RSS features causes trouble with all virtualised
> environments and should be turned off?
> Also, what kind of speed should I be expecting?
>
> Cheers,
>
> James

Actually, yes. The RSS feature can hinder transfers. It's a known issue.I
haven't seen this problem in a virtualized environment, therefore I would
suggest to disable the RSS/TCP Chimney feature on the host, and test it.
Depending on the NAS (is it a Windows machine or some third party box?), if
that option can be disabled on the NAS, I would disable there as well. If it
continues, disable it within the guests, too.

--
Ace

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

Please reply back to the newsgroup or forum for collaboration benefit among
responding engineers, and to help others benefit from your resolution.

Ace Fekay, MVP, MCT, MCITP EA, MCTS Windows 2008 & Exchange 2007, MCSE &
MCSA 2003/2000, MCSA Messaging 2003
Microsoft Certified Trainer
Microsoft MVP - Directory Services

If you feel this is an urgent issue and require immediate assistance, please
contact Microsoft PSS directly. Please check http://support.microsoft.com
for regional support phone numbers.