SCSI problems

Description

One of the following errors is logged to the OpenArchive (OA) error log file:
[<time>, <host>, BEA:SCSI, <drive>, 0, id:0:0:2:0]
ERROR: SCSI host status code: <code>
[<time>, <host>, LAS:SCSI, <library>, 0, id:0:0:5:0]
ERROR: Hardware Error ([0x40,0x91] Diagnostic failure on component 145)
[<time>, <host>, BEA:SCSI, <drive>, 0, id:0:0:2:0]
ERROR: Hardware Error ([0x83,0x09] AIT: MIC write fault.)
[<time>, <host>, LAS:SCSI, <library>, 0, id:0:0:1:0]
ERROR: Medium Error ([0x52,0x00] Cartridge fault)

Explanation

Errors that look like those listed above usually indicate SCSI hardware problems.

Workaround

To get an idea of the problem cause, inspect particular log files.
Inspect the files /var/opt/ivd/log/ivd.log and /var/log/messages.


Description

Random failures with tape drives or tape library.

Explanation

On highly loaded systems, SCSI resets may happen on the SCSI bus. This may lead to some low-level problems with the attached devices (tape library or drives).

Workaround

Consider using dedicated SCSI bus (card) for connecting the tape library to your system (and use other SCSI buses/cards for drives). In case of repeated failures, check the cabling (shielded cable is recommended), SCSI terminators (active terminators are recommended) and the power supply.

 

Description

A device connected to the SCSI or Fibre Channel HBA does not work correctly. Some operations are faulty or do not work.

Explanation

The root cause of the problem may be that your HBA does not support direct SCSI pass-through mode, the default mode for SCSI operation used in the OA implementation.

Workaround

Verify that you have the latest driver version for your HBA installed on the system. If not, update the driver. If the problem persists, use the HSM_PT_DIRECT variable to enable buffered SCSI pass-through mode.