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

Updating the Core Switch PID Format
104 SAN Switch 2/32 Version 4.1.x Installation Guide
Complete these steps to update the Core Switch PID format while the SAN is
running online.
1. Back up all data. Verify backups.
2. If the multi-pathing software cannot automatically switch over 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 it 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 Core 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 have 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.