Promise Technology UltraTrak100 TX8 - Manual (Page 19)

13
M
AINTENANCE
D
RIVE
S
TATUS
I
NDICATORS
As shown in the figure below, each drive has three status LEDs.
Figure 5. Location of Drive Status Indicators (TX4 shown)
M EANING OF S TATUS I NDICATORS
Indicator Color Meaning
Power Off No disk drive power – power off or no disk installed.
Green Disk power on.
Status Green Normal
Amber Data is being rebuilt to this drive
Red Failed
Disk Off No drive installed or the drive has failed
Green This will blink on and off to indicate disk activity
C
RITICAL
& O
FFLINE
A
RRAYS
A fault tolerant array goes "critical" when a drive is removed or fails. Due to the
fault tolerance of the array, the data is still available and online. However, once
the array goes critical, the array has lost its fault tolerance, and performance may
be adversely affected. If the fault was caused by a drive that was removed, the
drive should be replaced by another drive, either identical or larger, in order for the
RAID system to rebuild and restore optimal configuration.