MIS Systems Thread, Timeout on new server in Technical; Ok, so we were one of the schools affected by SQL running at 99% due to our extensive use of ...
24th May 2011, 09:29 PM #1
Timeout on new server
Ok, so we were one of the schools affected by SQL running at 99% due to our extensive use of panels on the homepage.
Capita's suggestion to fix this was to drastically reduce the number of panels used. My fix was to buy a dual hex core server and thankfully it has paid off and SIMS on curriculum runs faster than ever.
But we appear to be having problems with SIMS on Admin network, which is the network that the SIMS server is part of. Timeouts especially appear in Exams.
I have visited an affected machine and checked DNS resolutions, ping times, connection to server etc and cannot find anything wrong. I have checked and running the same things on curriculum or on the server itself work fine. I have also tried adding the connection timeout line to connect.ini but no change there either.
Anyone had a similar issue before and fixed it? Or any suggestions on what else to check.
24th May 2011, 10:27 PM #2
Have you looked at your AV? Could this be a reason why clients are timing out as the files on the server and also the client are being inspected by your AV each time they are accessed. Just a thought as you seem to have covered most other things. ;D
Originally Posted by jayemm
24th May 2011, 10:39 PM #3
I had thought about that, but the staff computers on Curriculum, and the computers on Admin, both have the same AV program. I will try switching the AV off on a test machine to rule it out.
Other suggestions still welcome, as I feel like I am running out of reasons!
25th May 2011, 09:01 AM #4
If you're using the same server, and it runs fine on one client, but not on another, assuming they are identical, or as much as can be i'd be inclined to think it was the networking somehow. Something must be different, if you've tested networky things, then look for the differences, the users, their permissions, the policies that apply.
Can you move a curriculum machine to the admin network for testing, if you just let it pick up the ip range for that side..? Try the same domain account from the other side...?
25th May 2011, 09:21 AM #5
What separates the 2 networks? Is it a switch (VLan) or a router?
Could it be the way the admin accesses the network through this switch or router which is different to the curriculum network?
Different protocols setup on the switch ports, packet sizes, frames etc?
How does the curriculum network access the Sims server what authentication does it use?
How is the Sims server configured for the admin network what is the difference between the clients?
Er! its still a little early and my brain is not warmed up yet will think of some other stuff
26th May 2011, 01:18 PM #6
The two networks are physically sepperate. Different switches, fibre and copper. Two physically seperate domains. The SIMS server is a member of the admin domain.
DC is a server 2003 machine, new sims is 2008 R2 with SQL2008 R2 SP1.
The switches are not managed just factory defaults. We have tried changing where things are plugged in and still no changes.
The admin machines map the drive and it uses domain groups to assign the share and security permissions.
Curriculum map the drive as local account on the SIMS server. To eliminate this I tried mapping the drive on an admin machine in the same way but that made no difference.
I wondered if there was an issue with the old server still being switched on, they have different instance and hostnames though, but this made no difference.
26th May 2011, 03:59 PM #7
Hmm, ok. So we have found out what may be causing it. If I disable the curriculum NIC, admin works fine. If I disable the admin nic, curriculum works fine. When both NICs are enabled, the one that was enabled last has the timeout issues etc.
We never had this issue with 2003 so ideas welcomed.
28th May 2011, 11:55 AM #8
Are they just separately configured IP ranges, or are you using VLANing controlled by the switch.
28th May 2011, 12:00 PM #9
Sounds very silly but if you have teaming enabled - does it have a configurable mac address? Had a very similar issue with several supermicros... turned out that we had dup mac addresses from other teamed machines. Manually setting a mac address in the teaming options fixed it, try running arp -a and see if any duplicate macs.
Originally Posted by jayemm
1st June 2011, 08:59 AM #10
Hey, just thought I would give you an update. I followed some instructions about dual home setup from microsoft, but it all appeared to be ok except a static route on the 'secondary' network which was actually the one that was working. Decided to reboot server the switch the server is plugged into and the core switch and so far all appears well!?
1st June 2011, 01:17 PM #11
Bizarre, so basically, the "Turn it off and back on again" strategy seems to have worked. Let's hope it lasts.
By darrenmcginnis in forum Internet Related/Filtering/Firewall
Last Post: 21st October 2009, 04:36 PM
By localzuk in forum Windows Server 2000/2003
Last Post: 25th September 2009, 10:03 AM
By dperrott in forum Thin Client and Virtual Machines
Last Post: 29th October 2008, 01:32 PM
By mrforgetful in forum Wireless Networks
Last Post: 14th May 2007, 08:17 AM
Users Browsing this Thread
There are currently 1 users browsing this thread. (0 members and 1 guests)