HP AA-RS2WC-TE, Installation Manual

Page: 95 / 242

Operating the Core Switch 2/64
95 Core Switch 2/64 V4.1 Installation Guide
To determine the status of a power supply:
1. Check the LED indicators on the power supply. For information about how to
interpret the LED patterns, refer to Table 11 on page 111.
2. Check power supply status using the
psshow
command. The power supply
status displays OK, absent, faulty. If a power supply is absent or faulty,
contact the switch supplier to order replacement parts, as necessary. For
additional information about the
psshow
command, refer to the HP
StorageWorks Fabric OS Version 3.1.x/4.1.x Reference Guide.
AC Power Input Connectors and AC Power Switches
The Core Switch 2/64 has two AC power input connectors, each with a green AC
rocker switch. The left power input connector provides power to the power
supplies in slots #1 and #3, and the right power input connector provides power to
the power supplies in slots #2 and #4. The power input connectors and their
associated power supplies are color-coded.
Caution: Unplugging a single power cable can power down the entire
switch, depending on which power supply slots contain power supplies.
Two detachable power cords are provided with the system and are customized for
the country in which the system is installed. The AC power switches light up
green when on.
Blower Assemblies
The switch is cooled by three blower assemblies located in the back of the chassis.
The air enters through the vents in the blower assembly side of the chassis and
exits from the top vent on the port side of the chassis. The chassis requires a
minimum air flow of 350 cubic feet per minute (595 cubic meters per hour).
The blower assemblies are hot-swappable, although two blower assemblies must
remain operating at all times. If more than one blower assembly must be removed
at the same time, power off the Core Switch 2/64 to prevent overheating.