Installing the A5150A Adapter
SCSI Bus Termination
Table | Auto Termination PDC Versions | |
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| HP 9000 System | PDC Version |
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| A400 and A500 | 40.20 or later |
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| 39.40 or later | |
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| 39.41 or later | |
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The A5150A is supported on the A400, A500,
HP 9000 systems.
Bus Termination
The SCSI bus must be properly terminated. The first and last physical SCSI devices on the ends of the SCSI bus must be terminated either by physical terminators or auto termination. The terminators of all other SCSI devices on the bus must be removed or disabled. Note that the A5150A HBA is also on the bus. However, because the A5150A HBA contains an automatic termination feature, external terminators on the HBA are not usually required. (Terminators are not shipped with the A5150A; you can order them separately, if needed.) The A5150A provides automatic termination when a SCSI cable from a powered SCSI device (a peripheral or other HBA) is connected to either the internal or external connector of the A5150A. Some exceptions where external terminators are required are described in “When and How to Turn Off Auto Termination” on page 31.
The older A5150A HBA
NOTE | The A5150A’s auto termination feature cannot be set independently for |
| the internal and external connectors of the HBA. |
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30 | Chapter 2 |