Troubleshooting
SCSI on StorPoint units |
StorPoint CD has a in house developed SCSI-solution that is 100% SCSI-2 compliant.
Nevertheless, since some drives are not,
the behavior between a StorPoint and a SCSI-card could differ when a certain drive are
connected.
If the SCSI connection fail completely you should receive a error code from the
LED’s with the following pattern:
Status LED |
CD LED |
Network LED |
Off |
Flash |
Flash (traffic indication) |
Before you start experimenting
with different settings and additional hardware make sure that the following applies.
- Is every connector on the SCSI cable properly inserted.
- Check the condition of your cabling, examine especially the
connectors for probable causes for errors
- Make sure that all drives have been set to different
SCSI-ID:s (0-6).
- Make sure that the last drive in the chain is properly
terminated. If available use a separate
active external terminator instead of the CD-ROM units built in resistors
- If you are using a StorPoint CD/T module make sure that the
power supply of your tower-chassi are able
to supply the drives and CD-server with sufficient power.
If no errors are found then try the following,
restart the StorPoint between every step.
- Set all drives to provide termination power to the
SCSI-Bus, check the drive specifications for the correct setting,
note that some drives require you to remove jumpers to enable parameters
- Change the ribbon cable against a high-grade, known working
cable. Use as short cable as possible
- If available use a separate active external terminator
instead of the CD-ROM units built in resistors,
the Active Terminators vary its resistance to provide the optimum value.
The StorPoint are using active termination but most of the internal terminators on the
CD-drives are passive.
- Disable or enable the Disconnect/Reselect parameter on the
StorPoint.
This features allows SCSI devices to 'disconnect' from the SCSI bus, allowing the
StorPoint to then
comunicate with other attached SCSI devices. It enables the StorPoint to communicate with
more than
one SCSI device at the same time. Disconnect/Reselect is not required and can be disabled,
if desired.
- In the purpose of discovering eventually malfunctioning
drives, disconnect one drive at the time to see
if there is a certain drive that interferes with the SCSI communication.
If nothing of the above works please contact your
distributor or Axis support.