Hitachi HUS154530VLF400 User Manual

Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification

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If the drive is not formatted with protection information, WRPROTECT must be set to 000b, else Check Condition status will 
be returned with sense key of Illegal Request and additional sense code of Invalid Field in CDB.

WRPROTECT=000b

Protection information is not transmitted to the drive.

If the drive is formatted with protection information, the drive will write protection information to disk based on its internal 
algorithms.

WRPROTECT=001b

- Protection information is transmitted to the drive with the user data

- Logical Block Guard is checked

- Logcial Block Application Tag is checked (applies to WRITE (32) command only)

- Logical Block Reference Tag is checked

WRPROTECT=010b

- Protection information is transmitted to the drive with the user data

- Logical Block Guard is not checked

- Logcial Block Application Tag is checked (applies to WRITE(32) command only)

- Logical Block Reference Tag is checked

WRPROTECT=011b

- Protection information is transmitted to the drive with the user data

- Logical Block Guard is not checked

- Logcial Block Application Tag is not checked

- Logical Block Reference Tag is not checked

WRPROTECT=100b

- Protection information is transmitted to the drive with the user data

- Logical Block Guard is checked

- Logcial Block Application Tag is not checked

- Logical Block Reference Tag is not checked

WRPROTECT=101b, 110b, 111b

These values are reserved.  Check Condition status will be returned with sense key of Illegal Request and additional sense 
code of Invalid Field in CDB.

If a check of the protection information fails, Check Condition status will be returned with sense key of Aborted Command 
and additional sense code indicating which protection field check failed.

Refer to the ANSI T10 standards for additional details of protection information.