RPC Send Operation Failed

[collective7]

I have a win2K client with flat files.

A win2003 NW 7.2 server with 2xLTO3's on a scalar 100 via native fibre.

Fast-ethernet for plumbing. Nics set to 100/full all the way through.

A probe of the client from the server (savegrp -pvc clientname -G groupname) comes back fine.

The backup starts fine, then slows down to a crawl (30KB/sec or so) Eventually it fails with the following error:

“save: RPC error: RPC send operation failed. A network connection could not be established with the host.”

I can resolve both ways, ping works fine. nslookup verifies that resolution is ok both ways. We are trying to back up one directory about 10GB in size with less than 50 files.

Why so slow? (then fails) What is wrong???

Anything that adds light to this would help.

Thanks in advanced.

 

[NWNinja]

I would check the duplex settings, make sure the network cards
on both server and client are set to 100 full duplex or whatever speed you have. Also make sure the ports in the switch are set to a fixed speed. NetWorker does not like working with cards set to autosense/auto detection. Also try an lower the client paralellism to 1 and see if that helps some. Hope it helps!

Cheers!
Maverick

 

[MDDTech]

Try turning off TRU on the backup server. This will flood the scsi chsin if not turned off

http://support.microsoft.com/default.aspx?scid=kb;EN-US;842411

Add all the client and backup server aliases to the host file in c:windows\system32\drivers\etc. This should resolve any DNS problems

 

[605]

I also vote for automatic detection on the NIC cards. Set them to Full Duplex.

 

[MDDTech]

If it is a NIC setting you will see packet errors at your network switch. If the server has a heavy IP traffic it should show the symptoms during non-backup activity.

 

[collective7]

the problem was network related.

reseting a switch fixed the issue.

Thanks to everyone for coming to help!