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exceeded.
Temperature threshold too low.
Cooling fan vent blocked.
Inadequate ventilation around the
DEU.
component. Follow the procedures in
the
Maintenance
chapter to replace the
failed component.
Change the temperature threshold
value, see
Heat Threshold
described
earlier in this guide..
Examine the cooling fan vents for
blockage and clear.
The location chosen for the DEU
probably has poor air circulation.
Choose a better location.
Status Indicator LEDs
not functioning properly.
SCSI data cable not properly
connected.
Verify that the SCSI data cable is
properly connected to the DEU SCSI-2
connector and to the controller card.
A specific drive’s Status
LED is blinking amber
and the Channel Mode
LED is steady amber.
An assigned drive has failed. The
DEU is in a non-fault tolerant mode.
Replace the disk drive and begin
rebuilding the array, see
Replacing a
Disk Drive
described earlier in this
guide.
A specific drive’s Status
LED is blinking amber,
the remainder of the
drive’s Status LEDs in
that array are steady
amber, and the
Channel Mode LED is
steady amber.
An assigned drive has failed. The
DEU is in a non-fault tolerant mode
and a rebuild operation is in
progress.
Replace the failed disk drive (Drive’s
Status LED blinking amber).
A specific drive’s Status
LED is OFF and the
Channel Mode LED is
steady amber.
The disk drive is missing. The DEU
is in a non-fault tolerant mode.
Insert a disk drive and begin an array
rebuild, see
Replacing a Disk Drive
described earlier in this guide.
A specific drive’s Status
LED is blinking green
and the Channel Mode
LED is steady green.
A drive has not been assigned into
an array or the drive is a hot spare,
however it is in a ready state.
Assign the drive to an array, refer to the
RAID Utilities User’s Guide
.