Technical information

HGST Ultrastar C15K600 Hard Disk Drive Specification
199
18.13.2
Type
The Type field specifies the characteristics of the persistent reservation being established for all customer data
sectors. The table below describes the supported types and how read and write commands are handled for each
reservation type.
Table 167 PERSISTENT RESERVE OUT, Type Code
Code
Name
Description
0h
Reserved
Reserved
1h Write Exclusive
Reads Shared: Any initiator may execute commands that transfer from the
media. Writes Exclusive: Only the initiator with the reservation may
execute commands that transfer data to the media; Reservation Conflict
status will be returned to other initiators.
2h
Reserved
Reserved
3h Exclusive Access
Reads Exclusive: Only the initiator with the reservation may execute
commands that transfer data from the media; Reservation Conflict status
will be returned to other initiators.
Writes Exclusive: Only the initiator with the reservation may execute
commands that transfer data to the media; Reservation Conflict status will
be returned to other initiators.
4h
Reserved
Reserved
5h
Write Exclusive
Registrants Only
Reads Shard: Any initiator may execute commands that transfer from
media.
Writes Exclusive: Only registered initiators may execute commands that
transfer data to the media; Reservation Conflict status will be returned to
other initiators.
6h
Exclusive Access
Registrants Only
Reads Exclusive: Only registered initiators may execute commands that
transfer data from the media; Reservation Conflict status will be returned to
other initiators.
Writes Exclusive: Only registered initiators may execute commands that
transfer data to the media; Reservation Conflict status will be returned to
other initiators.
7h-Fh
Reserved
Reserved
The RESPONSE frame is sent by the Drive to the Initiator (in bound data) or by the Initiator to the Drive (out bound
data).