sometime very slow access to our cluster fileshare

Hi Experts,

now I have a problem which is not very nice.
It is a sporadic problem.

We have a cluster fileserver out of Windows 2008 servers.
This cluster has several shares.

From a specific location we have more problems.
The users try to open some office related documents but it takes minutes to open it.
The file sometime just 4kb big and it takes 2 minutes to open it.

between this location and the clusterfileserver is a 60Mbit fibre line. And for logins one RODC is on the other site.

Do you have any ideas why this happens ?
Eprs_AdminSystem ArchitectAsked:
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Eprs_AdminSystem ArchitectAuthor Commented:
Can it be, a problem with CAL´s ?
We have installed over 100 windows cals.
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Eprs_AdminSystem ArchitectAuthor Commented:
A permission problem cannot be, because the can connect.
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Eprs_AdminSystem ArchitectAuthor Commented:
In the past we had a problem with office files and a office patch. After the patch was installed nothing was working. Do you know more about it ?
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Jim P.Commented:
Are all your DC's on line and are the times synced?  Even though there is no longer a PDC/BDC, supposedly, if the times are off, the authentication can really be slow.

So pick a DC that you want as primary, then make sure all the other DC's are time synced at least daily, if not every six hours.
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Eprs_AdminSystem ArchitectAuthor Commented:
the time is the same on all DC´s
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QlemoBatchelor, Developer and EE Topic AdvisorCommented:
If that happens often enough, and you do not get any direct answer, it is a good idea to use investigative tools. E.g. MS Network Monitor or WireShark to record DNS/WINS/NetBIOS related traffic, SysInternals's Process Monitor to see what are the file operations on client ( and optionally server).
Time sync issues, as stated above, might lead to failure in Kerberos authentication, and the session needing to fall back to other authentication methods, so this is something you should check beforehand.
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Eprs_AdminSystem ArchitectAuthor Commented:
ok I will check this
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Windows Server 2008

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