Parallel Scsi Device Not Detected; Attention Led Is Lit - HP StorageWorks MSL2024 User's And Service Manual

Table 33 Parallel SCSI device not detected
Problem
Device not detected
Changed drive SCSI ID, but the host
server does not recognize the new
ID.
Table 34 Attention LED is lit
Problem
Both the Attention and Cleaning
LEDs are lit.
A particular cartridge sets off the
cleaning light.
HP StorageWorks MSL2024, MSL4048, MSL8048, and MSL8096 Tape Libraries User and service
Solution
• Check that the HBA supports multiple LUNs and this feature is en-
abled. If not, only the tape drive will be detected.
• Check for conflicting SCSI IDs.
• Power on the device before powering on the host computer.
• Make sure the Library does not have the drive off line and that the
Library is not running a test.
• Attach the device to an LVDS SCSI host adapter/bus.
• The parallel SCSI cable length might be too long. Use a shorter cable
or remove other devices from the bus.
• Parallel SCSI bus not properly terminated. See
problems" on page 153.
• Check that the device is fully powered up and is not in an error state.
• Check the parallel SCSI connector and terminator for bent pins.
See SCSI detection problems" on page 153 for more detailed
troubleshooting help.
• Make sure that all parallel SCSI devices on the same bus have unique
SCSI ID numbers.
• Only SCSI IDs 0 through 7 are available on a narrow (50 pin) bus.
If the device is on a narrow bus and has a SCSI ID of 8 or greater,
the host server will not detect the drive. If you must use SCSI IDs 8 or
greater, use a wider bus.
• Reboot the host server.
Solution
This is most likely caused by a dirty drive that cannot read a tape and
marks the tape invalid.
1. View the inventory with the RMI. Note the slots that have tapes
marked with !.
2. Remove any magazines that contain tapes marked with !.
3. Remove the tapes that were marked with !.
4. Inspect each removed tape for damage, check that the tape is
compatible with the drive, and ensure that it is not past its usage
life. See Tape cartridges" on page 59. Discard any tapes that are
damaged or past their usage life. Do not use cartridges that are in-
compatible with the tape drive.
5. Reload the magazines with tapes that have passed inspection and
new tapes to replace cartridges that did not pass inspection.
6. Replace the magazines.
7. Clean the tape drive.
Check the cartridge for contamination by loose debris.
SCSI detection
guide 163