Users Guide

466 Fabric OS Command Reference

53-1002921-02

historyMode

Displays the mode of the field replaceable unit (FRU) history log.

SYNOPSIS historymode

DESCRIPTION Use this command to display the mode of the history buffer, which records the insertion and removal of

FRUs on a switch or chassis.

This command supports two modes of handling new log entries once the history buffer has reached its

maximum size:

Rotating mode

Any new entry exceeding the maximum buffer size overwrites the oldest entry in

the log. This is the default mode.

First-in mode

Any new entry exceeding the maximum buffer size is discarded. The original

entries in the buffer is preserved.

The history mode is a factory setting that cannot be modified. The size of the history buffer depends on

the hardware platform. The Brocade DCX backbone supports a maximum log size of 50 entries. Because

the WWNs are completely separate FRUs in the DCX, they have redundant data in these units. All other

platforms containing FRUs support 28 history log entries.

NOTES The execution of this command is subject to Virtual Fabric or Admin Domain restrictions that may be in

place. Refer to Chapter 1, "Using Fabric OS Commands" and Appendix A, "Command Availability" for

details.

OPERANDS None

EXAMPLES To display the mode of the history log:

switch:admin> historymode

History Mode is: Rotating.