HP Array Controller HSG V8.7 Software - Manual (Page 52)

Operating the UltraSCSI Enclosure
2–16 UltraSCSI RAID Enclosure
SBB Shelf Status Indicators
SBB shelf status indicators are provided by shelf power supplies and
disk drive SBBs.
Power Supply Status LEDs
The two green LEDs on each power supply (see Figure 2–5) display
the blower, the power bus, and the individual power supply status.
Normally, both these LEDs are O
N .
Figure 2–5 Power Supply Status LEDs
The green shelf status LED (C ALLOUT 1) is O N when all the power
supplies and all the blowers are operational. If any blower or power
supply fails, this LED turns O
FF .
The green power supply status LED (C ALLOUT 2) is O N when the
power supply is operating properly. If the power supply fails, both its
power supply status LEDs turn O
FF .
Disk Drive SBB Configuration
Part of the initial configuration procedure for the subsystem involves
configuring the disk drives. The disk drive SBB configuration tells the
array controllers the drive SBB device type, plus its physical and
logical location. The array controller requires this initial
configuration information before transferring data blocks to specific
disks to create storage sets. Once the configuration process is
complete, the system cannot function properly unless all the disks
remain in the same physical and logical location.
Figure C ALLOUTS
1. Shelf status LED
2. Power supply status LED
CXO4787B
1
2