Disk drive blanks
To maintain the proper enclosure air flow, a disk drive or a disk drive blank must be installed in each drive bay. The disk
drive blank maintains proper airflow within the disk enclosure.
Front status and UID module
The front status and UID module includes status LEDs and a unit identification (UID) button.
UID-health module LED
Item Description Status State
1 UID button When the UID button is
pressed, the UID LED
illuminates blue on the UID-
health module at the
enclosure rear.
The blue UID LED is used for
locating the enclosure from
the rack rear.
2 System health LED Solid blue System locate requested
O System locate o
Unit identification (UID) button
The unit identification (UID) button helps locate an enclosure and its components. When the UID button is activated, the
UID on the front and rear of the enclosure are illuminated.
NOTE: A remote session from the management utility can also illuminate the UID.
• To turn on the UID light, press the UID button. The UID light on the front and the rear of the enclosure will illuminate
solid blue. (The UID on cascaded storage enclosures are not illuminated.)
• To turn o an illuminated UID light, press the UID button. The UID light on the front and the rear of the enclosure will
turn o.
Power supply module
Two power supplies provide the necessary operating voltages to all controller enclosure components. If one power supply
fails, the remaining power supply is capable of operating the enclosure. (Replace any failed component as soon as
possible.)
Reference
34
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