SAN Multipathing with HP-UX v3

[A.W.R]

Hi,

With HP-UX v2 we used Securepath to handle multiple paths in a SAN. With Securepath it was possible to set up load balancing with different policies based on round robin, least service time etc..

In HP-UX v3 the multipathing software is integral to the operating system. Is it possible to set up the multipathing software load balancing policy, and how does one do this?

Thanks
Andrew

[Torsten.]

11.31 can even do this.

To get the current setting use (for example disk3):

# scsimgr get_info -D /dev/rdisk/disk3
...
IO load balance policy = least_cmd_load
...

Use

# scsimgr set_attr ...

to change changeable settings.

See also

http://docs.hp.com/en/B2355-60130/scsimgr.1M.html

[Torsten.]

see also:

http://docs.hp.com/en/B2355-60130/scsimgr_esdisk.7.html

...
load_bal_policy:

I/O load balancing policy. May be: round_robin, least_cmd_load, cl_round_robin, preferred_path.
...

http://docs.hp.com/en/scsimgr/scsimgr_whp_AR0803.pdf

If you want to keep a changed setting, don't forget to save the settings!