load balance and adding new disks to a stand_by server

[Tom_HPUX]

1) After I have added the new disks to an existing volume group on the primary server, how do I go about with load balancing and adding new disks to an existing volume group on the fail_over server? thanks

[Michael Steele_2]

vgexport -m vg##.mapfile -s -p -v /dev/vg##
(* mapfile / search for all disks / preview / verbose *)

vgexport -m vg##.mapfile -s -v /dev/vg##
(* when ready *0

ftp vg##.mapfile over to fail over server.

vgimport -s -v -p -m vg##.mapfile /dev/vg##
(* search for disks w/out listing them / verbose / preview / mapfile - see if disks respond *)

vgimport -v -s -m vg##.mapfile /dev/vg##
(* when ready *)

Alternative is to list every disk w/out using the -s option. See man pages.

[Tom_HPUX]

But my disks still not load balancing.
My current procedure is to vgexport with the map file from primary server than after load balancing the disks. I have to vgimport the disks again. Is there a better way ?

[Michael Steele_2]

Refer to Round-Robin algorithm when adding disks into a vg.

c0 - c1 / c1 - c0 / c0 - c1 / c1 - c0

Note: c0 = controller 0, c1 = controller 1. As in c0t#d# - c1t#d#.

See page 3 and 4 of this link:

http://docs.hp.com/en/11iv3IOPerf/IOPerformanceWhitePaper.pdf