Technical information

HGST Ultrastar C15K600 Hard Disk Drive Specification
276
WRPROTECT defines the manner in which protection information written to disk shall be checked during processing
of the command. Protection information may be transmitted to the drive with the user data, based on the
WRPROTECT bit and the drive format.
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
- Logical 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
- Logical 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
- Logical 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
- Logical 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.