HP A3550A - High Availability Disk Arrays Model 20 Storage Enclosure User Manual page 280

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LED ON
Front Panel The power supplies are operational
POWER-ON (green) and are providing +24 VDC to the
midplane +24 VDC bus.
Front Panel The array has detected a fault in one
FAULT (amber) of the FRUs.
Disk module The disk module is operational and
READY (green) ready to receive/send data.
Disk Module Disk module is receiving or sending
BUSY (green) data or is hung.
Disk Module Disk module has encountered a fault
FAULT (amber) condition and cannot be accessed.
Fan pack Fan pack detected a fault with one of
REPLACE (amber) the fans.
SP Normal operation
READY (green)
SP SP has just been powered on and is
SERVICE (red) running power-on self-tests or has
encountered a fault condition and is
no longer configured in the array.
Power Supply Unit Normal operation
READY (green)
Power Supply Unit Power supply has encountered a
REPLACE (amber) fault condition and is no longer
configured in the array.
BBU Normal operation
READY (green)
BBU Batteries in BBU are being charged. Normal operation
CHARGING (green)
BBU BBU has encountered a fault and is
REPLACE (amber) no longer operational.
OFF
The array is powered off or, if the
array has been running, the disk
array has lost the +24 VDC bus.
Normal operation
Drive is busy (BUSY LED lit) or there
is a fault (FAULT LED lit).
Drive is ready (READY LED lit) or
there is a fault (FAULT LED lit).
Drive is ready (READY LED lit) or
busy (BUSY LED lit).
Normal operation
Array is off (or failing to provide +24
VDC to the +24 VDC bus) or the SP
has a fault (FAULT LED lit).
Normal operation
Array is off (no AC power reaching
the power supply) or the power
supply has a fault (FAULT LED lit).
Normal operation
Normal operation
Normal operation
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