
Appendix C
C-3
Configuring the OS for the PowerTrust UPS
Configuring HP-UX for the PowerTrust UPS
Configuring HP-UX for the PowerTrust UPS
On HP-UX 9.04 and later releases, PowerTrust UPS messages are displayed on the system
console and logged to syslog; this functionality is not supported on HP-UX 9.0 PCO. The
UPS always communicates with the operator by means of auditory alarms and indicators
on its front panel.
This applies to HP-UX 9.04 and later releases only. In order for HP-UX to display UPS
messages and log UPS events to the system log, you must perform several configuration
tasks:
1. Connect the supplied RS-232 cable from the UPS to a serial port configured to the
system for each UPS in the system. The port should be a direct connect or modem type
port (except remote or maintenance type port).
If the supplied cable is not long enough, use a straight-through 25-wire RS-232-C
extender cable (3062C, 25 feet long) from the MDP port to the DB-25 connector end of
the cable supplied with the UPS, and then the UPS cable to the UPS's DB-9 connector.
2. Use SAM (Peripheral Devices) to configure the PowerTrust UPS when HP-UX is
running. For how to log on and other detailed information, refer to the ups_mond(1M)
and ups_conf(4) man pages. Specify these options and parameters:
a. The port used for the UPS. Configure the port at 1200 baud rate.
b. Activate or deactivate the automatic shutdown feature.
c. The shutdown_delay_mins parameter (default=1 minute). This parameter specifies
the number of minutes the UPS Monitor program will wait before initiating a
"shutdown -h" following notification that AC power to the UPS is lost. This interval
allows the computer to continue operation through brief electrical fluctuations.
To take full advantage of the UPS, this value should be large enough to account for
transient power fluctuations expected at the site. Shut down is undesirable if power
will return shortly. Consider the effects of frequent short power losses. Too long a
delay will cause earlier battery depletion.
d. The shutdown_timeout_mins parameter (default=5 minutes). This parameter
specifies the number of minutes the UPS Monitor program will monitor the
"shutdown -h" operation before initiating a reboot with the halt option. In this way, a
reboot is executed even if the shutdown process hangs. This value must be longer
than the longest time that shutdown may take on the system, but should not exceed
the battery capacity.
3. Verify that HP-UX is properly configured for the UPS by checking that UPS messages
are displayed on the console. Also check for UPS messages in /usr/adm/syslog.
Messages appear whenever ups_mond starts, and whenever the PowerTrust detects
some reportable condition.
4. Power fail the UPS to check the system and generate messages. See “Power Failing the
UPS” later in this chapter.
5. Check the following if UPS messages are not displayed on the console:
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Страница 20: ...Preface 8 ...
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Страница 52: ...1 30 Chapter1 Overview Specifications Figure 1 8 UPS Input Voltage Transfer Points ...
Страница 56: ...1 34 Chapter1 Overview UPS Modes Figure 1 10 Simplified UPS 5 5 kVA UPS Block Diagram ...
Страница 62: ...1 40 Chapter1 Overview Support Information ...
Страница 76: ...2 14 Chapter2 Unpacking and Inspecting Shipping and Storage Requirements ...
Страница 104: ...3 28 Chapter3 Installing the UPS Examples of PowerTrust Connections in a System ...
Страница 116: ...5 4 Chapter5 Verification Procedures Load Testing ...
Страница 148: ...7 6 Chapter7 Cleaning and Maintenance Exchanging Batteries Fan ...
Страница 190: ...A 42 AppendixA HP UX UPS Monitor Error Messages Log Only Messages ...
Страница 218: ...C 8 AppendixC Configuring the OS for the PowerTrust UPS Power Failing the UPS ...