4 Troubleshooting
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• Verify the network operating system supports the configuration.
• Verify the same SCSI channel is not used for both internal and external
SCSI devices.
• Verify with the ECU utility that your SCSI controllers are properly
configured.
• Make sure the NOS and the appropriate drivers are properly installed for
your SCSI and DAC controllers. (Refer to the related NOS, NetServer,
HBA or DAC documentation for additional information.)
• Verify the server recognizes the SCSI devices. When the server is started,
the SCSI BIOS displays a banner and copyright notice. The BIOS then
checks for valid devices on the SCSI bus and reports which devices are
found. If the SCSI devices are installed and configured correctly, the
SCSI devices installed in the system are shown in the list.
If the Hot-Swap Disk Power LEDs are Flashing
If one hot-swap drive is flashing yellow, it is likely that the power to the drive is
faulty. Verify the drive was inserted properly. Also verify the power distribution
cable is correctly installed for that drive.
If all hot-swap drives in a cage are flashing a red light, turn off the storage
system immediately! The drives have exceeded the operational temperature
range and, if allowed to continue, can cause permanent damage. If all hot swap
drives in a cage have yellow flashing lights, it is a warning that the temperature
is approaching the maximum temperature allowed.
If all the disk modules in a hot-swap cage are flashing red or yellow, check the
following items:
• Verify the chassis fan and power supply fan are operating.
• Verify all of the blank filler panels cover any empty shelves.
• Make sure the chassis door is closed. (The door must be closed for the
cooling system to function properly.)
• Verify the air vents are not blocked. (The storage system cooling outlets
should be at least six inches from any obstructions.)
• Verify the ambient temperature does not exceed the levels noted in the
“Specifications” appendix.
