Configuring HP-UX For Peripherals

224 Chapter9

Conﬁguring Uninterruptable Power Systems

Planning to Conﬁgure a UPS

NOTE Do not use a standard terminal cable to connect a UPS to the serial port.

The pinouts are different.

The computer should have one dedicated MUX port for UPS

communication for each UPS conﬁgured. Additional UPS units must be

connected to additional dedicated MUX ports.

Hewlett Packard supports only 25-pin MUX ports for UPS operation. The

modem port on the MFIO (Console LAN pca), RJ45, 3-pin RS-232 and

5-pin RS-422 MUX ports are not supported for UPS operation.

For each UPS on the system, you are connecting the supplied RS-232-C

cable from the UPS to a port on a Modem Distribution Panel (MDP). The

computer console must be conﬁgured to port 0. You can connect the UPS

to port 1 on the MDP.

Software Considerations

Be sure that you have loaded the PowerTrust UPS ﬁleset, UPS-TOOLS.

You can do this using the swinstall command. Consult the HP

OpenView Software Distributor Administrator's Guide for procedures on

loading ﬁlesets.

Note, since the connections to the UPS are through power cords and

MUX ports, ioscan will not explicitly display a UPS in its conﬁguration;

only the MUX port is displayed.

Table 9-1 UPS Cable Pin-Outs

UPS MUX

9 pins(M) 25 pins(M)

Receive 1 3

Transmit 2 2

Gnd 9 7