TFDS Manual

Starting and Configuring TFDS
Tandem Failure Data System (TFDS) Manual—520628-003
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Starting TFDS Automatically With a Startup File
n
represents the primary processor in which TFDS will run. Although you can
select any available processor as the primary processor for TFDS, HP
recommends that you use either processor 0 or 1 (and designate the other as
backup-CPU). If both of these processors fail, the system fails also.
backup-CPU
represents the processor in which TFDS creates a backup process. This
backup process keeps TFDS running if the primary processor fails. The default
processor used is n + 1.
config-file-name
is an optional TFDS configuration file. The default configuration file,
$SYSTEM.ZTFDS.TFDSCONF, is used if no alternate is specified.
Starting TFDS Automatically With a Startup File
HP recommends that you run TFDS at all times for maximum benefit. You can add the
following script to your startup file.
Configuring TFDS Options
You can configure TFDS to meet your needs. For both G-series and D-series RVUs,
this subsection describes:
Viewing and Changing TFDS Configuration Options
To view your current TFDS configuration settings, use the CONFIG command. To learn
how to use this command and how to understand the information it provides, see
CONFIG on page 4-14.
To change TFDS configuration settings, use TFDSCOM commands. For a brief
description of the TFDSCOM commands used to change TFDS configuration settings
and default values, see Table 3-1, TFDS Configuration File Commands, on page 3-5.
For more information on these and all other TFDSCOM commands, see Section 4,
Note. If you start TFDS with a startup file, specify the NOWAIT option to ensure that the
startup completes normally.
The following example uses the NOWAIT option:
TACL 1> TFDS / NAME $ZDMP, NOWAIT, CPU 0 /1,TFDSCONF
Viewing and Changing TFDS Configuration Options 3-3
Default Configuration Settings 3-4
Consequences of Configuration Settings 3-5
Changing the TFDS Default to Enable Automatic Dumping 3-6