Error Recovery
HP Servers Troubleshooting Guide
5-9
HP CONFIDENTIAL
Writer: Ted Weiman File Name: f-ch5 Error Recovery.doc
Codename: Generic TSG Part Number: 161759-007 Last Saved On: 11/19/02 9:36 AM
Health Driver
The Health Driver continually resets the Automatic Server Recovery-2 (ASR-2)
timer according to the frequency specified in the server setup utility (for example,
ten minutes). If the ASR-2 timer counts down to zero before being reset, indicating
an operating system or a server lockup, ASR-2 restarts the server into either
Diagnostics or the operating system (as indicated by the system configuration
parameters). The default value is ten minutes, and the allowable settings are 5, 10, 20,
and 30 minutes.
For remote and offsite (unattended) servers, setting the software error recovery
time-out for five minutes reduces the server downtime and allows the server to
recover quickly. For local (attended) servers, you can set the software error recovery
time-out for 20 or 30 minutes, giving you time to arrive at the server if you wish to
diagnose the problem manually.
The Health Driver is independent of the ASR-2 timer; loading it enables the ASR-2
timer, allowing the driver to detect and log information about numerous hardware
and software errors in the Integrated Management Log (IML) if an error occurs.
However, you cannot enable the ASR-2 timer without loading the Health Driver.
Before ASR-2 restarts the server, it records any information available about the
condition of the operating system in the IML. This information can be used to
diagnose an operating system or server lockup, while still allowing the server to be
restarted.
For additional information about the ASR-2 flow of events, refer to your server
maintenance and service guide on the on the following website:
www.compaq.com/support/servers
Select your server to display the reference library.
