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Chapter 3 Subsystem Monitoring
System Monitoring
3-7
LED Name Color Status
Drive Busy Blue/Amber
FLASHING blue indicates there is read/write
activity on the drive from Controller A.
FLASHING amber indicates there is read/write
activity on the drive from Controller B (in a
redundant-controller mode).
OFF indicates there is no read/write activity on
the drive.
Power
Status
Green/Red
GREEN indicates that power is supplied to the
hard disk drive and the disk drive is present.
RED indicates that there is a disk drive failure or
the disk drive is absent.
Table 3-5: Drive Tray LED Definitions
3.2.5 BBU Module LED
The hot-swappable BBU module comes with an LED that indicates module failure, or
when battery cells are being replenished.
Figure 3-5: BBU Module LED
LED Name Color Status
BBU Status
Amber
ON indicates the BBU has failed and cannot sustain
the cache memory.
OFF indicates the BBU is sufficiently charged and
can sustain cached data.