HP StorageWorks SAN Switch 2/32 Installation Manual page 81

2. If the multi-pathing software cannot automatically switchover between fabrics
seamlessly enough for the users of the SAN, use the software's administrative
tools to manually disassociate, or mark offline all storage devices on the first
fabric to be updated. (This is the best practice in cases where any doubt exists
about the multi-pathing software's behavior, but is more labor intensive.)
3. Verify that I/O continues over the other fabric.
4. Disable all switches one at a time in the fabric to be updated.
5. Verify that I/O continues over the other fabric after each switch disable.
6. Change the PID format on each switch in the fabric, as follows:
a. Telnet into each switch in the fabric.
b. Type switchDisable, and press Enter.
c. Type configure and press Enter.
d. Type y at the Fabric parameters prompt, (yes, y, no, n): [no] y.
e. To view the Core Switch PID setting, press Enter until you reach the Core
Switch PID format line, similar to the following.
Core Switch PID Format: (0..1) [0]
NOTE: The [0] value shown above indicates the Core Switch PID parameter set on this
particular switch.
f. Type 1 to update the Core Switch PID format.
g. Continue to press Enter until you completed the configure section and have
returned to the admin prompt.
7. One at a time, re-enable the switches in the updated fabric. In a core/edge
network, enable the core switches first.
8. Once the fabric has re-converged, type cfgEnable myZoningCfg (where
myZoningCfg is the name of your zone configuration). Press Enter to update
zoning.
NOTE: This does not change the definition of zones in the fabric, but causes the lowest tables
in the zoning database to update with the new Core Switch PID format.
9. Repeat steps 3 through 6 for all fabrics in the SAN.
SAN switch 2/32 version 4.0.x installation guide
Updating the Core Switch PID Format
B–3 B–3