User Manual

SCSI Commands Reference Manual, Rev. J 291

www.seagate.com Zone Block Commands (ZBC)

4.6 RESET WRITE POINTER command (94h/04h)

The RESET WRITE POINTER command (see table 253) requests the device server to perform reset write pointer operations

(see ZBC).

OPERATION CODE and SERVICE ACTION fields

The OPERATION CODE field and the SERVICE ACTION field are defined in 2.2 and shall be set to the values shown in table 253 for the RESET

WRITE POINTER command.

ZONE ID field and ALL bit

If the ALL bit is set to zero, then the ZONE ID field specifies the lowest LBA of the write pointer zone on which the device server shall perform a

reset write pointer operation. If the ALL bit is set to one, then the device server shall ignore the ZONE ID field.

If the ALL bit is set to zero and the ZONE ID field:

a) does not specify the lowest LBA of a write pointer zone (see ZBC), then the device server shall terminate the command with CHECK

CONDITION status, with the sense key set to ILLEGAL REQUEST and the additional sense code set to INVALID FIELD IN CDB; or

b) specifies the lowest LBA of a write pointer zone (see ZBC) and for the zone specified by the ZONE ID field, the Zone Condition is:

A. READ ONLY, then the device server shall terminate the command with CHECK CONDITION status, with the sense key set

to DATA PROTECT and additional sense code set to ZONE IS READ ONLY;

B). OFFLINE, then the device server shall terminate the command with CHECK CONDITION status, with the sense key set to

DATA PROTECT and additional sense code set to ZONE IS OFFLINE;

C). EMPTY, then the device server shall make no changes in the Zone Condition and not return an error; or

D). IMPLICITLY OPENED, EXPLICITLY OPENED, FULL, or CLOSED, then the device server shall perform a reset write pointer

operation (see ZBC) on the zone specified by the ZONE ID field.

An ALL bit set to one specifies that the device server shall perform a reset write pointer operation (see ZBC) on each zone with a Zone Condi-

tion of IMPLICITLY OPENED, EXPLICITLY OPENED, FULL, or CLOSED.

The CONTROL byte is defined in 2.2.7.

Table 253 RESET WRITE POINTER command

Bit

Byte

7 6 5 4 3 2 1 0

0 OPERATION CODE (94h)

1 Reserved SERVICE ACTION (04h)

2 (MSB)

ZONE ID. . .

9 (LSB)

Reserved. . .

14 Reserved ALL

15 CONTROL