SCSI-2 Drive Command Set
Read Long Command (DEH)
Chapter 2
2-146
Transfer
Length
The Transfer Length field specifies the number of bytes
of data and ECC information to be read:
4096 media = 4760 bytes (4096 data + 664 pointer, CRC,
pad and ECC).
For 9.1 Gbyte Capacity drives only.
2048 media = 2380 bytes (2048 data + 332 pointer, CRC,
pad, and ECC).
For 5.2 Gbyte capacity drives only.
1K media = 1200 bytes (1024 data + 176 pointer, CRC,
pad, and ECC).
512 media = 610 bytes (512 data + 98 pointer, CRC, pad,
and ECC).
All other numbers are rejected unless SC = 1.
Rel Adr
A relative address bit of one indicates that logical block
address specified is a two’s complement offset from the
last logical block address accessed.
A value of 0 indicates that the logical block address is an
absolute address.
PBA
A Physical Block Address bit of 1 indicates that physical
block addressing is used.
A PBA bit of 0 indicates that logical block addressing is
used.
SC
A Sector Count bit of 1 indicates the transfer length is
represented in sectors rather than bytes. A "sector"
consists of 2380 bytes for 2K media, 1200 bytes for 1K
media or 610 bytes for 512 media.
A Sector Count bit of 0 indicates the transfer length is
represented in bytes.
NOTE
When this command is executed with 14X 512 or 1024 byte/sector media,
the drive will return a CHECK CONDITION status. The sense key/
additional sense code will be set to ILLEGAL REQUEST/INVALID
COMMAND.
Summary of Contents for SureStore Optical 2600fx
Page 1: ...optical drive and library SCSI 2 command reference for models fx ex and mx ...
Page 11: ...Contents x ...
Page 20: ...Chapter 1 1 1 SCSI Command Overview 1 SCSI Command Overview ...
Page 38: ...Chapter 2 2 1 Drive Commands SCSI 2 Drive Commands 2 SCSI 2 Drive Command Set ...
Page 187: ...SCSI 2 Drive Command Set Write Long Command DFH Chapter 2 2 150 ...
Page 188: ...Chapter 3 3 1 Jukebox SCSI 2 Commands 3 Jukebox SCSI 2 Command Set ...
Page 264: ...Appendix A A 1 Drive Error Codes A Drive Error Codes ...
Page 287: ...Drive Error Codes DSP Error Codes Appendix A A 24 ...
Page 288: ...Appendix B B 1 Autochanger Error Codes B Autochanger Error Codes ...
Page 339: ...Autochanger Error Codes Jukebox Micro Move Error Codes Appendix B B 52 ...
Page 340: ...Appendix C C 1 Field Replaceable Units C Field Replaceable Units FRUs ...
Page 345: ...Field Replaceable Units FRUs HP Field Replaceable Units FRUs Appendix C C 6 ...
Page 346: ...Appendix D D 1 Micro Macro Moves D Micro Macro Moves ...
Page 369: ...Micro Macro Moves HP Surestore Optical Micro Move IDs Appendix D D 24 ...
Page 370: ...Appendix E E 1 Disconnect Timeouts E Disconnect Timeout Settings ...
Page 373: ...Disconnect Timeout Settings Disconnect Timeout Settings Appendix E E 4 ...
Page 377: ...Index 4 ...