HP 3PAR T-Class Installation and Deinstallation Guide

BBUs contain two batteries, labeled battery A and battery B. The BBUs also include the following
LEDs (Figure 79 (page 88)):
Figure 79 Battery Backup Unit LEDs (Magnetek)
Consult Table 20 (page 88) to verify proper functioning of the BBUs.
Table 20 Battery Backup Unit LED Displays
MeaningAppearanceLED
Indicates battery A is charged.Steady green lightBattery A status LED
Indicates the battery is undergoing a
test.
Flashing green light
Indicates a battery error.Steady amber light
BBUs or power supply is turned off.No light
Indicates battery B is charged.Steady green lightBattery B status LED
Indicates the battery is undergoing a
test.
Blinking green light
Indicates a battery error.Steady amber light
BBUs or power supply is turned off.No light
Power Distribution Unit Lamps
Storage systems include four Power Distribution Units (PDUs). PDUs contain two power bank lamps
(Figure 80 (page 88)):
Figure 80 Power Distribution Unit Lamps
A blue illuminated lamp indicates power is being supplied to a power bank. When the blue lamp
is not illuminated, the power bank is not receiving AC input.
88 Understanding LED Status