HISTORY command

Use the HISTORY command to view past data that was previously collected by the data collector. The data is gathered at installation-defined intervals. The date and time in the panels that support history indicate when the data being displayed was collected.

You can only view past data if the data collector is active for the subsystem you are monitoring and if it was started with the parameter HISTORY=YES.

The command syntax is:
Figure 1. Syntax of the HISTORY command
Read syntax diagramSkip visual syntax diagramHISTORYOFFBACKFORWARDdatehh:mm:ss

Parameters of the HISTORY command

The HISTORY command accepts the following parameters:
OFF
Returns the display to the current time.
BACK
Displays data for the previous interval. If no more data is available, data from the earliest available interval is displayed.
FORWARD
Displays information for the next available interval. If no more data is available, data from the current time is displayed and processing continues as if HISTORY is OFF.
date
The date of the required information. If no date is specified, today's date is assumed.
hh:mm:ss
The time of the required information. If no time is specified, the default is the time of the earliest available history record for the specified date. The seconds do not need to be specified.

If no data is available for the specified date and time, the next available record is displayed.

If you do not specify any parameters, the History window is displayed. The current system date and time are the defaults for the History window.

Viewing past data

To view past data, type HISTORY followed by any parameters on the command line and press Enter. HISTORY can be truncated to a minimum of HIS.