Hardware Overview
40
System Hardware Guide
The system status LED glows green during normal operation. Flashing green means that the system
is degraded. Flashing amber denotes a non-critical condition. A steady amber denotes a critical
condition. Each state has multiple possible causes:
Each disk drive carrier has one LED on the right side. The LED:
•
flashes green during disk activity
•
glows a steady amber when the disk is failed
•
flashes amber when targeted by the Data Domain system
disk beacon
command.
Caution
The disk carriers are different than those used in other Data Domain systems. When
replacing a disk, use only disks and carriers certified for the DD120 by Data Domain.
Table 9: System status LED
State
Possible Causes
Green Flashing:
Degraded
One or more bad DIMMs, but memory is still adequate. Processes may run slowly.
A blower failure, but the system is not overheated.
A non-critical temperature or voltage threshold was crossed.
Amber Flashing:
Non-Fatal Alarm
A critical voltage threshold was crossed.
A temperature (CPU or memory) critical threshold was crossed.
A motherboard voltage regulator overheated.
The minimum number of blowers to maintain cooling is not present.
Too many correctable memory errors.
Amber Steady:
Critical
Non-Recoverable Errors
Multiple DIMM failures.
Internal CPU errors.
Processor 1 is missing.
Содержание DD580
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