Problem After Migrating Windows 2003 to a New Hardware

Hi all ,

I recently migrated a windows 2003 server to a new hardware. I posted a
question here:
http://www.microsoft.com/communities...r=US&sloc=&p=5

The migration went fine. This is an HP DL 380 G4. Until last week we found
that the disk I/O is very bad on a RAID5. The server has the OS on a RAID1
on the on-board 6i card and the data on a RAID5 on a 641 scsi card. The 641
card had a battery cache with 75% Read / 25% Write. I tried to change the
Read/Write ratio to 50/50 but it didn't get any better. HP support said
there is nothing they can help because there is no hardware errors in the
server logs or HP logs.

The problem seems related to the migration; moving or copying a 1 GB file
from drive to drive takes more than 30 minutes. And it seems to be a slow
read only; write is OK to the RAID but read is SLOOOW.

Anything you can think of is the cause?

Thanks.

"ME" <> wrote in message
news:uiCI%...
> Hi all ,
>
> I recently migrated a windows 2003 server to a new hardware. I posted a
> question here:
> http://www.microsoft.com/communities...r=US&sloc=&p=5
>
> The migration went fine. This is an HP DL 380 G4. Until last week we
> found that the disk I/O is very bad on a RAID5. The server has the OS on
> a RAID1 on the on-board 6i card and the data on a RAID5 on a 641 scsi
> card. The 641 card had a battery cache with 75% Read / 25% Write. I
> tried to change the Read/Write ratio to 50/50 but it didn't get any
> better. HP support said there is nothing they can help because there is
> no hardware errors in the server logs or HP logs.
>
> The problem seems related to the migration; moving or copying a 1 GB file
> from drive to drive takes more than 30 minutes. And it seems to be a slow
> read only; write is OK to the RAID but read is SLOOOW.
>
> Anything you can think of is the cause?
>
> Thanks.
>


The TCP CHimney/RSS feature may be causing it. Read up more on it and how to
disable it.

TCP Chimney and RSS Features May Cause Slow File Transfers or Cause
Connectivity Problems
http://msmvps.com/blogs/acefekay/arc...-problems.aspx


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

For urgent issues, please contact Microsoft PSS directly. Please check
http://support.microsoft.com for regional support phone numbers.

Hi - the server already has the key EnableRSS and it is set to 0. I will
try to add the key DisableTaskOffload later today and see if there is any
difference.

Thanks.

"Ace Fekay [MCT]" <> wrote in message
news:...
> "ME" <> wrote in message
> news:uiCI%...
>> Hi all ,
>>
>> I recently migrated a windows 2003 server to a new hardware. I posted a
>> question here:
>> http://www.microsoft.com/communities...r=US&sloc=&p=5
>>
>> The migration went fine. This is an HP DL 380 G4. Until last week we
>> found that the disk I/O is very bad on a RAID5. The server has the OS on
>> a RAID1 on the on-board 6i card and the data on a RAID5 on a 641 scsi
>> card. The 641 card had a battery cache with 75% Read / 25% Write. I
>> tried to change the Read/Write ratio to 50/50 but it didn't get any
>> better. HP support said there is nothing they can help because there is
>> no hardware errors in the server logs or HP logs.
>>
>> The problem seems related to the migration; moving or copying a 1 GB file
>> from drive to drive takes more than 30 minutes. And it seems to be a
>> slow read only; write is OK to the RAID but read is SLOOOW.
>>
>> Anything you can think of is the cause?
>>
>> Thanks.
>>
>
>
> The TCP CHimney/RSS feature may be causing it. Read up more on it and how
> to disable it.
>
> TCP Chimney and RSS Features May Cause Slow File Transfers or Cause
> Connectivity Problems
> http://msmvps.com/blogs/acefekay/arc...-problems.aspx
>
>
> --
> 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, MCT, MCITP EA, MCTS Windows 2008 & Exchange 2007, MCSE & MCSA
> 2003/2000, MCSA Messaging 2003
> Microsoft Certified Trainer
>
> For urgent issues, please contact Microsoft PSS directly. Please check
> http://support.microsoft.com for regional support phone numbers.
>

"ME" <> wrote in message
news:...
> Hi - the server already has the key EnableRSS and it is set to 0. I will
> try to add the key DisableTaskOffload later today and see if there is any
> difference.
>
> Thanks.
>

The DisableTaskOffload may be the key.

Also, is there an antivirus in place? FYI, with some AVs, such as CA, we
needed to disable 'scan network drives' setting, which caused a similar
problem.

Ace

> The DisableTaskOffload may be the key.

You are correct. I created the key and rebooted the server; have not seen
the problem back since Friday night. I will keep watching the server for
the rest of this week.

Thanks,


"Ace Fekay [MCT]" <> wrote in message
news:...
> "ME" <> wrote in message
> news:...
>> Hi - the server already has the key EnableRSS and it is set to 0. I will
>> try to add the key DisableTaskOffload later today and see if there is any
>> difference.
>>
>> Thanks.
>>
>
> The DisableTaskOffload may be the key.
>
> Also, is there an antivirus in place? FYI, with some AVs, such as CA, we
> needed to disable 'scan network drives' setting, which caused a similar
> problem.
>
> Ace
>
>
>