User`s guide

/dev/rdsk/c3t12d0 /dev/rdsk/c10t500000E01046DEF0d0
/dev/rdsk/c3t11d0 /dev/rdsk/c10t500000E01046E390d0
Conguring Automatic Failback
Some storage devices have controllers congured as PRIMARY and SECONDARY as part of
the array conguration. The secondary paths may operate at a lower performance level than the
primary paths. The multipathing software uses the primary path to talk to the storage device
and keeps the secondary path on standby. In the event of a primary path failure, the
multipathing software automatically directs all I/O trac over the secondary path, with the
primary path taken oine. This process is called a “failover” operation. When the failure
associated with the primary path has been repaired, the multipathing software automatically
directs all I/O trac over the primary path and keeps the secondary path standby as before. This
process is called a “failback” operation.
You can disable the automatic failback operation so the multipathing software does not
automatically failback to the primary path. Later, after the failure associated with the primary
path has been repaired, you can do a manual failback operation using the luxadm(1M)
command.
▼
To Congure Automatic Failback
Open the /kernel/drv/scsi_vhci.conf le in a text editor.
To disable automatic failback capability, change the auto-failback entry to:
auto-failback="disable";
To enable automatic failback capability (if you disabled it before), change the auto-failback
entry to:
auto-failback="enable";
Save and exit the le.
Reboot the system.
# shutdown -g0 -y -i6
1
2
3
4
Conguring Automatic Failback
Chapter 4 • Conguring Multipathing Software 51