Users Guide

Fabric OS Administrator’s Guide 83
53-1002920-02
Chapter
3
Performing Advanced Configuration Tasks
In this chapter
•Port identifiers (PIDs) and PID binding overview. . . . . . . . . . . . . . . . . . . . . . 83
•Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
•Blade terminology and compatibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
•Enabling and disabling blades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
•Blade swapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
•Disabling switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
•Power management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
•Equipment status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104
•Audit log configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
•Duplicate PWWN handling during device login . . . . . . . . . . . . . . . . . . . . . . 110
•Enabling forward error correction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Port identifiers (PIDs) and PID binding overview
Port identifiers (PIDs, also called Fabric Addresses) are used by the routing and zoning services in
Fibre Channel fabrics to identify ports in the network. All devices in a fabric must use the same PID
format. When you add new equipment to the SAN, you may need to change the PID format on
legacy equipment.
Many scenarios cause a device to receive a new PID; for example, unplugging the device from one
port and plugging it into a different port as part of fabric maintenance, or changing the domain ID
of a switch, which might be necessary when merging fabrics, or changing compatibility mode
settings.
Some device drivers use the PID to map logical disk drives to physical Fibre Channel counterparts.
Most drivers can either change PID mappings dynamically, also called dynamic PID binding, or use
the WWN of the Fibre Channel disk for mapping, also called WWN binding.
Some older device drivers behave as if a PID uniquely identifies a device; they use static PID
binding. These device drivers should be updated, if possible, to use WWN binding or dynamic PID
binding instead, because static PID binding creates problems in many routine maintenance
scenarios. Fortunately, very few device drivers still behave this way. Many current device drivers
enable you to select static PID binding as well as WWN binding. You should only select static PID
binding if there is a compelling reason, and only after you have evaluated the effect of doing so.