Scsi Interface Introduction; Supported Functions - HP C2488A Technical Reference Manual

4
SCSI Interface
Introduction
This chapter describes the implementation of the Small Computer System Interface, SCSI on
the HP C2486A/88A/90A Disk Drives. The information includes an overview of the SCSI
features, options, and commands supported by these products. Any operating characteristics
relevant to SCSI implementation are also discussed. In this manual the term Target refers to
the HP C2486A/88A/90A Disk Drives.
Table 1-1 provides a list of all the commands supported by the Target and identifies
which commands are SCSI implementations and which commands are Vendor Unique
implementations.
Appendix A provides detailed descriptions of the SCSI commands supported by the Target.
These descriptions are in alphabetical order and include Command Descriptor Block (CDB)
formats, data formats, and all device specific information involved in command execution. For
further command specific details, refer to the ANSI SCSI Specification.
Appendix B provides descriptions of the Vendor Unique commands supported by the Target.
These descriptions include Command Descriptor Block (CDB) formats, data formats, and all
device specific information involved in command execution.
Supported Functions
The Target supports the following:
• Command Queuing. Command queuing is supported.
• Write Cache. Write caching is supported.
• Arbitration. Full arbitration is supported.
• Disconnect. If allowed, the Target may disconnect after a command is received, and for any
significant delay occurring during a data transfer operation.
• Linked Commands. Command linking is supported.
DRAFT
SCSI Interface 4·1
1/18/93 09:58