SCSI Interface Driver scsi

The following changes are available for the Small Computer System Interface (SCSI) on the platforms mentioned below:

Added support for the Dual Port UltraII Symbios SCSI Host Bus Adapter (HBA), also referred to as the "SCSI controller" on the N4000 and the A400 and A500. The A180 and A180C, B-, C-, and J-Class models/systems can use this card. However, the HBA is not officially supported on these platforms. This card will not work on the V-Class server.
Ability to set the SCSI ID's and synchronous transfer rates of the PCI SCSI cards on N-, V-, and A-Class machines from the Boot Console Handler (BCH) with a simple command. See the help menu at the BCH prompt for more information.

For more information on the SCSI standard, refer to:

http://scsita.org/

Changing SCSI Speeds

You need to be aware of the device limitations before changing SCSI speeds for HBA's. A common mistake is to set an HBA to Ultra Speeds and connect it to a JBOD (Just a Bunch of Disks). The disks may be able to support Ultra, but the cabinet itself may only be FAST compliant resulting in problems with the SCSI BUS. Cable types and length criteria change when using higher rates.With the new speed capabilities it is important to consult the SCSI specification before changing HBA speeds so that the SCSI BUS configurations are valid.

SCSI Interface Driver scsi_c720

Technical documentation

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Changing SCSI Speeds