San Switch 2/32 v4.1.x - Installation Guide

Updating the Core Switch PID Format

107SAN Switch 2/32 Version 4.1.x Installation Guide

Note: Once the switch Core PID Format is set, it is stored in the flash memory of the

switch, and it is NOT necessary to set it again during subsequent firmware upgrades.

HP/UX Procedure for Updating the Core Switch PID Format

Use these procedures for updating the Core Switch PID format in an HP/UX

environment.

1. Back up all data. Verify backups.

2. If you are not using multi-pathing software, stop all I/O going to all volumes

connected through the switch/fabric to be updated.

3. If you are not using multi-pathing software, unmount the volumes from their

mount points using umount. The proper usage would be umount <mount

point>. For example:

umount /mnt/jbod

4. If you are using multi-pathing software, use that software to remove one

fabric’s devices from its configuration.

5. Deactivate the appropriate volume groups using vgchange. The proper usage

would be vgchange –a n <path to volume group>. For example:

vgchange –a n /dev/jbod

6. Make a backup copy of the volume group directory using tar from within

/dev. For example:

tar –cf /tmp/jbod.tar jbod

7. Export the volume group using vgexport. The proper usage would be

vgexport –m <map file> <path to volume group>. For example:

vgexport –m /tmp/jbod_map /dev/jbod

8. Login into each switch in the fabric

9. Issue the command switchDisable.

10. Issue the command configure and change the Core Switch PID Format to

11. Issue the command switchEnable. Enable the core switches first, then the

edge switches.