New Servers Are Running Slower

[drosenkranz]

Hello,

I'm a programmer trying to help our network person so bear with me on this one. Any suggestions would be greatly appreciated.

We have 600+ users.
We were running 4 Pentium 200's (32 bit) servers with Win NT4.
We replaced them with a 900 Mhz P3 and a 700 Mhz P3 running Win 2k.
We also replaced 400 of our old workstations (P166's) with 2.6 Meg XP Pro's.

Since we switched over, the network has slowed to a crawl. We had copied a 3 Mg file on the original NT4 servers and it took about 4 seconds. This same file took 7+ minutes on the new Win 2K servers. Why are we running slower???

There can be a 3 minute wait just logging into one of our apps which used to take 2 seconds. User's are getting errors in apps because of the long delays. These apps have an excellent track record and they have NOT been changed or modified.

We have some 10 Mbs switches and some 100 Mbs but only about 100 of our users actually run our in-house applications (database processing) software - most just use Word and email. The network hardware remains unchanged since we upgraded the servers and workstations.

Why are we running 100 times slower if we are running faster servers and workstations ???

Thanks For Your Time,

Dave

The 2nd mouse gets the cheese.

 

[jsundin3]

What kind of servers are they? You may need to disable some of the services (iis and other services are enabled by default)if you dont need them, patch them also....(darn code red! yes its out there still), also could be name resolution problem.....meaning lots of broadcasts for internet or intranet. Double check that.......

JeffS

 

[drosenkranz]

Hello jsundin3,

The servers are Dell P3's ( with xeon processors).

The 2nd mouse gets the cheese.

 

[arteus]

It sounds as if dns is incorrectly or not configured. Revisit this and make sure all pc's point to the correct INTERNAL dns server. This should solve your problem.

 

[fuunstatic]

need a bit more info, are the servers both domain controllers? If so are their DNS settings pointing to themselves and not to each other?

are the servers themselves running slow? use task manager to see if the processor is being used heavily

from one of the servers have you tried copying that 7mb file directly to the other server?



"Work to live, don't live to work"

"The problem with troubleshooting is that sometimes it shoots back"

 

[LedZepRock]

If its is a DNS problem using the DOS command NSLOOKUP should help, pick a machine thats slow to the server and ping the server using the IP, then try pinging the server using the name of the server and see if the name is resolved. if you type NSLOOKUP into DOS it will tell you the DNS server it is looking at, and then you should be able to type in any of your server names and it should resolve them into there IPS.

Also are you using DHCP?? are you sure you have set the correct DNS server in there. You say you have 600 odd machines, so I guess you may have a router or so in there, could be a routing problem, but using the TRACERT command should help you out there, are your switches switches or hubs, check that you are not getting to many collistions (normally a collistion light on the hub itself should give you some idea), also you sure that there is not a faulty NIC on your network that gone all chatty???

Hope theres a few pointers there, let us know any results.

Led*Zep