I have a new Dell R610 server with Windows Server 2008 64bit. It has 4 gigabit network cards. One card is connected to a new Cisco 2960G switch on our existing subnet. Two cards are connected to the same switch in a different group of ports on a different subnet. Those two connections are for the server to connect to an iSCSI SAN on the new subnet. The server logs in to our primary domain. Other servers and workstations on the domain can see the new server. When I am on the new server, browsing the network is very slow, but it eventually sees all the computers. The server is running SQL 2008 standard. Workstations on the network that access SQL databases on the SAN are periodically dropped and have to reconnect to the database they are working in. Remote desktop sessions to the server are eventually dropped. I set up a continuos ping of the server and most replies are <1ms or =1ms. About every 4-5 minutes there is one of from 2 to 6ms. I tried connecting the server to one of our existing switches and have the same problem. We tried the remaining network card and a new cable with the same results.
Any suggestions would be appreciated.