1 Jun
2020
1 Jun
'20
7:49 p.m.
Steve Davidson <steve at davidson.net> writes:
APC offered software to detect power failure using
their UPSes for VMS but it
was for the units that predate machines with USB support. Connection was via
serial port.
I have a software product for APC UPSs that understands APC's so-called Smart
protocol. It will work for any of the SmartUPS with a serial connector. The
APC also had a mode where one of the serial signals would drop (essentially,
DTR) when the UPS went on battery. Any UPS doing that signaling can easily
be used to shutdown a VMS system using a $QIO monitoring the associated port
on the system.
--
VAXman- A Bored Certified VMS Kernel Mode Hacker VAXman(at)TMESIS(dot)ORG
I speak to machines with the voice of humanity.