D1012/D1024 Hardware Installation and Maintenance Guide
23
Power supply LEDs
A Storage Enclosure accommodates two AC power supply CRUs within the two power supply slots.
Power redundancy is achieved through two independent load-sharing power supplies. In the event of a
power supply failure, or the failure of the power source, the storage system can operate continuously on a
single power supply. Greater redundancy can be achieved by connecting the power supplies to separate
circuits.
Figure 12
LEDs: AC power supply unit — rear panel
NOTE:
For more information about power-cycling enclosures, see
Table 8
LEDs: Disks in SFF and LFF enclosures
Disk drive module LED behavior
LFF/SFF disks
Description
State
Color
Action
Disk drive OK
Off
None
None
Operating normally
Green
Off
Disk drive I/O
Initializing
Green
Blink
Active and processing I/O
Green
Blink
Performing a media scan
Green
Blink
Disk drive failed Fault or failure
Amber
On
Fault and remove disk drive
Amber
On
Fault and identify disk drive
Green
Off
Amber
Blink
Fault, identify, and remove disk drive
Green
On
Amber
Blink
LED No./Description
Color
State
Definition
1 — Input Source Power Good
Green
On
Power is on and input voltage is normal.
Off
Power is off, or input voltage is below the minimum
threshold.
2 — Voltage/Fan Fault/Service
Required
Amber
On
Output voltage is out of range, or a fan is operating below
the minimum required RPM.
Off
Output voltage is normal.
1
2