1-16 Disk Array Unit Overview
A Tray Ejector The ejector is used to secure and remove the disk module
or dummy tray to the chassis.
B POWER LED (green) The POWER LED lights green if the AC power is supplied
and the power switch is set to ON. The LED is off if the
power switch is set to OFF.
C SERVICE LED (orange) The SERVICE LED lights orange when the disk array unit
encounters an error. The LED flashes during the self-test
and initialization immediately after the power is turned on.
The LED goes off when the disk array unit has started, and
it is off while the disk array unit is operating normally.
D Disk module The dedicated tray containing the HDD (hard disk drive).
The disk modules are installed in three slots from the left
and bound as RAID level 5 (shipping default). The remaining
twelve slots contain dummy trays.
E HDD READY LED (green) The HDD READY LED lights green while the disk module
operates normally. The LED blinks when the disk module
transfers data.
The HDD READY LED blinks during the self-test or
initialization just after power-on.
F HDD FAULT LED
(orange)
The HDD FAULT LED lights at the occurrence of an error in
the disk drive. The LED is off while the disk drive operates
normally.
Figure 1-7. Front Chassis Features and Indicators (Bezel Removed)
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