System Startup, Configuration, and Shutdown Reference Manual (32650-90892)

Appendix G 227
UPS and UPS Monitor/iX Software
G UPS and UPS Monitor/iX Software
A new method of power failure protection is available on all 7.0 supported systems. Instead
of battery backup units, they will have one or more PowerTrust UPS (Uninterruptible
Power Supply) devices.
Like the battery backup method of power failure, the UPS devices protect the HP e3000
system against the loss of work in progress in cases of utility AC power failures of up to
fifteen minutes in duration. Furthermore, they have been designed to appear similar to the
battery backup method which minimizes their effect on system operation and management
procedures.
UPS devices offer two principal advantages over the battery backup method:
• In a minimal UPS-based system, the degree of power failure protection is equivalent to
that provided by the battery backup unit. You can, however, add more UPS devices to
the system and provide reserve power to selected peripherals. Depending upon how
much of the system is provided with UPS power, it can run a partial or full workload
non-stop through limited periods of AC power failure.
• The UPS contains a serial I/O communications interface that, in conjunction with UPS
Monitor/iX software, notifies the system operator of any problems. Like the battery
backup hardware that the UPS devices replace, a system-wide power failure recovery
message is broadcast to all active user terminals and to the console upon the return of
power following a failure. In addition to console messages, the UPS Monitor/iX software
also posts a variety of status and warning messages to the system log files which you
can review and analyze to evaluate system performance.