-2

I am looking for advice rather then fix my issue.

What should fibre channel port settings be? Currently F_ports,

I have a qlogic 5800 sanbox switch connected to quantum scalar i40 lto7 library over fibre channel.

My backup product P5, speeds backing up a NAS a rubbish, will never finish!

If you have a backup library connected to a fibre switch, what ports settings do you have on the fibre port switch?

What speeds do you get backing up? mine are 20-35mb/s

Thanks

  • 1
    There's a LOT more detail needed I'm afraid, just fill this with as much detail as you can please. – Chopper3 Feb 26 at 12:56
  • backup server has a 10GB fibre card, connected to core switch, NAS connected via 10GB fibre to core switch. Backup server is running Centos 6.5, Prestor P5 backup software. – P78W Feb 26 at 13:07
  • Fibre-Channel doesn't run at 10Gbps - 1/2/4/8/16 & 32Gbps yes, 10Gbps no, unless you're talking FCoE - again, more, and accurate, detail please. – Chopper3 Feb 26 at 15:37
  • Edit** Backup server Centos 6.5 with 10GB FCoE, Qlogic HBA running @4gbps. – P78W Feb 26 at 16:14
  • Edit** Backup server Centos 6.5 with 10gb FCoE, Qlogic HBA running 4gbps. NAS is connected via 10gb FCoE, NAS and Backup Server on same vlan. Tape drives running 4GB, I have manages to get backups to run at 40mb/s by forcing fabric switch ports 4GB. But that is still not optimum. – P78W Feb 26 at 16:29
1

I had performance problems with an IBM TS3100 a while ago. My troubleshooting log from that contains the following:

  • The tape drive needed to be set to N-port mode.
  • The tape drive had an 8Gbps FC interface while the backup server and FC switch had 16Gbps ones. I had issues with timeouts until I set the same speed across the line (effectively lowering the max throughput for the backup server)
  • In the end it turned out I also had a bad FC cable that caused massive amounts of retransmissions.

After that I saw the kind of speeds I expected - Veeam backup copies to tape (in other words few but large files) averaging around 235 MiB/s over the duration of a job.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.