HP StorageWorks MSA 2.8 SAN Switch - Manual (Page 159)

Updating Switches to the Core PID Addressing
159 Fabric OS Procedures Version 3.1.x/4.1.x User Guide
rmdev -Rdl fcs0
7. Log into each switch in the fabric.
8. Issue the switchdisable command.
9. Issue the configure command and change the Core Switch PID Format to
1.
10. Issue the configenable [effective_zone_configuration]
command. For example:
configenable my_config
11. Issue the switchenable command. Enable the core switches first, then the
edges.
12. Rebuild the device entries for the affected fabric using the cfgmgr
command. For example:
cfgmgr –v
Note: This command may take several minutes to complete.
13. If you are not using multi-pathing software, vary on the disk volume groups.
The proper usage would be varyonvg <volume_group_name> . For
example:
varyonvg datavg
14. If you are not using multi-pathing software, mount all devices again and
restart I/O. For example:
mount /mnt/jbod
15. If you are using multi-pathing software, re-enable the affected path.
16. Repeat for all fabrics.