User Manual

SCSI Commands Reference Manual, Rev. J 136
www.seagate.com Direct Access Block commands (SPC-5 and SBC-4)
3.16 READ (10) command
The READ (10) command (see table 97) requests that the device server read the specified logical block(s) and transfer them to
the data-in buffer. Each logical block read includes user data and, if the medium is formatted with protection information
enabled, protection information. Each logical block transferred includes user data and may include protection information,
based on the RDPROTECT field and the medium format. The most recent data value written in the addressed logical block shall
be returned.
RDPROTECT field
The device server shall check the protection information read from the medium before returning status for the command based on the RDPRO-
TECT field as described in table 98.
Table 97 READ (10) command
Bit
Byte
7 6 5 4 3 2 1 0
0
OPERATION CODE (28h)
1
RDPROTECT DPO FUA RARC Obsolete Obsolete
2
(MSB)
LOGICAL BLOCK ADDRESS
. . .
5
(LSB)
6
Reserved GROUP NUMBER
7
(MSB)
TRANSFER LENGTH
8
(LSB)
9
CONTROL