Technical information

HGST Ultrastar C15K600 Hard Disk Drive Specification
268
The Verification Length is the number of blocks to check.
The data (if any) from the data-out phase and the data from the media are not retained in the cache. Therefore, the
DPO bit has no effect on this command and is ignored.
VRPROTECT defines the manner in which protection information read from disk shall be checked during processing
of the command. Protection information is stored on disk, and may be validated using the drive's internal checking
algorithms, and also byte-by-byte compared using data from the initiator when ByteChk=1.
If the drive is not formatted with protection information, VRPROTECT 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.