Slow Windows 2008 R2 Server shares

markfurey
markfurey used Ask the Experts™
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Hello Experts, we have been getting reports of performance issues with shares moved to Windows 2008R2 from previous versions of Windows. We have tried swithcing off firewalls, AV programs etc but still no use. The problem is obvious when you switch them back to the old file share and programs respond much quicker.

We now have this issue at two differnt sites at two different compnaies, any suggestions please? Both companies have had ADprep etc and AD FSMO roles moved as part of the Domain upgrade to make the old Domain Windows 2008 compliant.

Regards,

Mark.
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Top Expert 2012

Commented:
What hardware is the OS running on? Branded servers?

What nic model is in the server? Broadcom? If so they are known to have certain issues and I'd start with firmware and driver upgrades for them if so...

Also what does slow mean? Give us a measurement to compare...

Old file share - copy large 100-250MB file to it - what speed do you get?
New share - same - what speed do you get?

Author

Commented:
Hello Experts,

The Server in question is a HP Proliant DL380P Gen8, and it's using a HP Ethernet 1Gb 4-port 331FLR Adapter, which when you look at the driver properties in system manager you can see the manufacturer displayed as "Broadcom".

The measurement of slowness is subjective as we provide bespoke DB's using Progress language, when clients connect to the DB server using various TCP ports they also connect to a share to for the "run-time" environment where various files are needed as part of the connection to the DB's. The DB server is still the same but the shared files have been moved to the new File Server and now from the user perspective there is a "lag" or added latency between browsing the menus inside the program. I will try to run a file copy comparison when next in the office.

I have also found various articles regarding Windows 2008 R2 and TCP windowing, there are various fixes for this which I am also running through, but I will look at updating the Ethernet drivers as well.

We have seen weird issues previously HP Proliant Ethernet drivers, you’d just expect them to work!
The issue was resolved by changing the deafult SMB protocol version form 2 to version 1 on the Windows 2008 Server, this requires a registry entry change.

Author

Commented:
I found the solution on a microsoft forum.

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