This would be my first guess as well - port speed mismatch and autonegotiating to 100MB/sec. the other thing is, are you sure that the network is the bottleneck? For instance, if the server is IO/CPU/memory-bound, you may not pass as much traffic as you expect to see.
Jeff Lightner wrote: > You said you've checked NIC but don't provide details. > > One thing that we've seen as a common problem is networking. On HP-UX > the 100 MB cards MUST be hard set to 100 Full as must the associated > switch ports. They do NOT autonegotiate properly. (For Gigabit > ethernet both sides have to be autonegotiate.) > > Also to try to eliminate backups being impacted by regular traffic (and > vice-versa) you might want to consider having dedicated NICs for a > backup LAN. > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Espe, > Thomas > Sent: Wednesday, October 10, 2007 9:33 AM > To: veritas-bu@mailman.eng.auburn.edu > Subject: [Veritas-bu] Problems with network speed (NBU 6.0MP4) > > Hello. > > We are experiencing problems with the network speed on one of our NBU > media servers. > This is an HP-UX 11.23 server running NBU 6.0MP4. > > We have tried tuning the server following the guidelines in the 'Backup > Planning > and Performance Tuning Guide' for NBU 6.0. > > We have also checked the network settings on the NIC and on the switch, > to no avail. > > We find this strange, as we have our NBU master/media server (Linux) on > the same switch and this server > is getting up to 9-10 times faster data transfer as the media server > does. > > Has anyone run into similar problems? Any hints on how to proceed? > > _______________________________________________ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
