Technical data

Fabric OS Administrator’s Guide A-9
Publication Number: 53-0000518-09
Changing to Core PID Format
A
8. Bring the devices online in the order appropriate to the SAN. This usually involves starting up the
storage arrays first, and the hosts last.
9. For any devices manually bound by PID, bring the device back online, but do not start applications.
Update their bindings and reboot again if necessary. This might involve changing them to the new
PIDs, or might (preferably) involve changing to WWN binding.
10. For any devices automatically bound by PID, reboot the device to rebuild the device tree (some
operating systems require a special command to do this, such as “boot –r” in Solaris).
11. For devices that do not bind by PID or have had their PID binding updated, bring them back up and
resume I/O.
12. Verify that all I/O has resumed correctly.
Hybrid Update
It is possible to combine the online and offline methods for fabrics where only a few devices bind by
PID. Because any hybrid procedure is extremely customized, it is necessary to work closely with the
SAN service provider in these cases.
Changing to Core PID Format
In Fabric OS release v4.2.0 and later, Native PID format is not supported; the default format is the Core
PID format.
In Fabric OS v3.1.2 and later, Core PID format is the default configuration.
In Fabric OS v2.6.2 and later, Native PID format is the default configuration.
Although the PID format is listed in the configuration file, do not edit the file to change the setting
there. Instead, use the CLI configure command. When you use the configure command, switch
databases that contain PID-sensitive information are automatically updated. If you change the setting in
the configuration file and then download the edited file, the PID format will be changed, but the
database entries will not, and so they will be incorrect.
The following maps the PID format names to the names used in the management interfaces.
Before changing the PID format, determine if host reboots will be necessary. The section “Host
Reboots” on page A-2 summarizes the situations that might require a reboot.
PID Format Name Management Interface Name
native PID switch PID address mode 0
core PID switch PID address mode 1
extended edge PID switch PID address mode 2