CHAPTER 6
SCSI Description
This chapter covers the following topics:
•
“SCSI Overview”
introduces the SCSI specification.
•
“SCSI-2 Commands”
lists the SCSI-2 commands implemented by
SDLT 220/320.
•
“SCSI-3 Commands”
lists the SCSI-3 commands implemented by
SDLT 220/320.
•
“Parity”
defines the meaning of data parity checking.
•
“Signal States”
defines the meaning of SCSI signal values and SCSI IDs.
•
“SCSI Signals”
defines SCSI signals and provides bus timing values.
6.1
SCSI Overview
The Small Computer System Interface (SCSI) is a specification for a peripheral
bus and command set that is an ANSI standard. The standard defines an I/O wide
SCSI bus that supports up to 16 devices (15 SCSI devices and one host adapter).
ANSI defines three primary objectives for SCSI-2:
1.
To provide host computers with device-independence within a class of
devices.
2.
To be backward-compatible with SCSI-1 devices that support bus parity and
that meet conformance level 2 of SCSI-1.
3.
To move device-dependent intelligence to the SCSI-2 devices.
Содержание SDLT220
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Страница 34: ...CHAPTER 2 SDLT 220 320 Product Information ...
Страница 52: ...CHAPTER 3 Drive Specifications ...
Страница 76: ...CHAPTER 4 Installing Your Tape Drive ...
Страница 87: ...CHAPTER 5 Using Your Tape Drive Figure 5 1 SDLT 220 and SDLT 320 Front Panels A Comparison SDLT 220 SDLT 320 ...
Страница 92: ...CHAPTER 5 Using Your Tape Drive ...
Страница 104: ...CHAPTER 6 SCSI Description ...
Страница 120: ...APPENDIX A SDLT I Tape Cartridge ...
Страница 126: ...APPENDIX B DLT IV Tape Cartridge Figure B 4 Tape Cartridges with Damage Visible During Visual Inspection ...
Страница 130: ...APPENDIX B DLT IV Tape Cartridge ...