Product manual

that it made. The SCSI ID of the third-party initiator is specified
in the
3rd party device ID field.
The
extent bit must always be 0. The drive does not support
extent reservations. If the extent bit is 1, the drive generates a
check condition status.
3.4.13 Mode Sense (6) command (1A
H
)
When the initiator sends this command to the drive, it returns mode-page
parameters to the initiator. This command is used in conjunction with the
Mode Select command.
Bytes
Bits
76543210
000011010
1 LUN 0 DBD 0 0 0
2 PC Page code
300000000
4 Allocation length
500000000
Byte 1
Byte 2
A disable block descriptor (DBD) bit of zero indicates that the
target may return zero or more block descriptors in the returned
Mode Sense data. This is at the target’s discretion. A DBD bit of
one specifies that the target will not return any block descriptors
in the returned Mode Sense data.
The page control (PC) field determines the content of Mode
Parameter bytes. Regardless of the value of the PC, the block
descriptor always contains the current values.
PC bit 7 PC bit 6 Effect
0 0 Return current values.
0 1 Return changeable values.
1 0 Return default values.
1 1 Return saved values.
The
page code is the designator that is unique to each page.
The page codes are listed in Section 3.4.13.1 on page 54.
Byte 4
The
allocation length specifies the number of bytes that the
initiator has allocated for returned Mode Sense data. An alloca-
tion length of 0 means that no Mode Sense data is to be
Medalist Pro 2160N/2160WC Product Manual, Rev. A 53