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HP SureStore CD-ROM Servers - SCSI Problems

Introduction
If the Status LED is off and the SCSI LED is red, there is, most likely, a problem with the server, the tower’s SCSI bus, or a drive (a CD-ROM, DVD-ROM, or hard disk drive). Check the server module error conditions for specific LED patterns.
The comprehensive SCSI diagnosis procedure
  1. See if you can access the server’s web page. If you cannot, then proceed to the next step. If you can reach the server, then:
    1. Under the Administration tab, click This Server and click the picture for each device in the tower. Note any problems shown for a particular drive and check that drive before the other drives when you get to step 2, below.
    2. Switch off the server, wait 10 seconds, and then switch it on again (power cycle). Wait for the self-test process to complete.
      If problems have not been corrected, proceed to the next step.
  2. Check the LEDs on all CD/DVD-ROM drives for error conditions.
    If one or some of the drives show an error condition, remove the drive. Do step 1b above and again check the LEDs on the server and all drives. If the error has been corrected, then the drive module is faulty and must be replaced. If the error persists, then proceed to the next step.
    If you show no errors on your drives or have only DVD-ROM drives, proceed to the next step.
  3. Pull out the server module far enough to disconnect only the SCSI bus--the long flat ribbon cable.
    Do step 1b above and check the LEDs on the server and all drives. If the error has been corrected, proceed to the next step. If the error persists, then the server module is faulty and must be replaced.
  4. Switch off the server. Remove all drives (CD-ROM, DVD-ROM, and hard disk drives) from the tower. Making sure that the power is still off, reattach the SCSI connection--the long flat ribbon cable--to the server. Switch on the server. Wait for the self-test process to complete and check the following:
    • If the server’s SCSI LED is normal, then the tower is working and a drive may be faulty; proceed to the next step.
    • If the server’s SCSI LED is not normal, then the tower may be faulty and need replacement.
  5. Reinstall the drive modules one by one, by switching off power, installing the drive in the tower, switching on power, inserting a disc, attempting to access it, and checking previous LED error conditions. The drive that reintroduces the error condition is faulty and must be replaced.
      note:
    If you have extended your server with an expansion tower and you can access only the drives on that tower, then check the SCSI connections on the rear of both towers. If the connectors are seated properly, then pull out the server module far enough to check the long flat ribbon cable connection. To diagnose possible SCSI cable failures, see the troubleshooting section of the expansion tower user’s guide.

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