Windows 2008 R2 file server is very Slow

kennynt
kennynt used Ask the Experts™
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Hi,

I recently setup a server with Windows 2008 R2 / Sp1 Which has file shares for the net work users of 7. The users are connected to other domain controller and I created a user in the new server and thru the script i mapped the shares as drives in the user computers. This one worked fine until we used windows 2003 server. But when we changed to the 2008 R2 server, the user computers are taking lot of time opening & saving files from this new server...? How to solve this problem...any help is highly appreciated...
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How do you connect to the server? is this over FQDN or IP?
Does the user connect wireless/wired?

Author

Commented:
By Ip. User connect to the server thru wired network...
can you try and disable IPv6 on both server and clients
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Author

Commented:
Yes it is disabled in all the workstations and server...
I assume this connection is over a local LAN rather than through the internet or VPN.  If you ping the ip address of the server through the command line does is return all replies at time<1ms ? This can attempt to identify any network latency issues.

How much RAM does this file server have?
Is this a virtual machine or a physical machine?
Does it serve any other roles or have additional services installed?(e.g. DNS, SQL server,)

Author

Commented:
Ping returns in 1m/s reply and this is thru LAN. RAM is 4GB... and this has Dns role for the purpose of AD...
1. Are these large files such as CAD files or simple word and excel type of documents?
2. If you open the files from the server do you experience the same kind of delay?

Here is a related messageboard from technet suggeting to disable SMB2 on the 2008 server and also references kb822219 ( http://support.microsoft.com/kb/822219 )
http://social.technet.microsoft.com/Forums/en-US/windowsserver2008r2general/thread/7817f338-50ec-4de6-b059-4370588f4e30/

Commented:
U said the new Win08 Server is also functioning as a DNS server - is its IP address same as the original Win03 Server or has it changed? If it has changed, you may need to reconfigure DNS server address setting (either individually, or via DHCP settings on your DHCP server).

Is your DHCP server on the same Win08 box? If you have enable IPv6, are all your network devices (switch, router and NICs) IPv6 compatible (ie updated drivers)?

And obviously check cabling integrity.

Author

Commented:
The files which are very slow to open and to save are Excel files... word files seem to be little better but not with normal performance....  This win2008 server is not DHCP... but Dns becoz of Ad domain.... also there is one main Dns server..... ipv6 disabled...   Ip setting is as same as the old one.
Commented:
Hi,

I fixed this problem.  I felt that Antivirus might be the problem. I uninstalled the Anti virus software.. the server works normal..  I tested this for more than 2 weeks. All are fine.

Author

Commented:
I suspected AV software and UN-installed the Av software... WOW the server is working OK>>>

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