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.