Seagate ST3285N, Product Manual

Page: 55 / 151

3.4.7 Write command (0A
H
)
When the drive receives the Write command, it writes the data from the
initiator to the disc. The drive receives all the write data before seeking
or disconnecting.
The AWRE bit of the Error Recovery page (01
H
) determines how the
drive handles bad sectors during a Write command. The Error Recover
page is discussed in Appendix C.1.
If the system supports disconnection, the drive can disconnect and
reconnect while executing this command. The drive disconnects when
any of the following conditions arise:
•
An internal error recovery procedure is required.
•
The data transfer with the initiator is interrupted for more than 1 msec.
•
The drive’s internal data buffer is full.
The buffer empty ratio in the Disconnect/Reconnect page determines
when the drive reconnects. Section C.2 documents the Disconnect/Re-
connect page.
The initiator must continue sending write data to the drive until the drive
sends a command complete status or until the initiator resets or aborts
the command.
If there is a reservation access conflict, this command terminates with a
reservation conflict status and no data is written. For more information
about the reservation conflict status, see Section 3.2.
Bit
Byte
7 6 5 4 3 2 1 0
0 0 0 0 0 1 0 1 0
1 LUN Logical block address (MSB)
2 Logical block address
3 Logical block address (LSB)
4 Transfer Length
5 0 0 0 0 0 0 Flag Link
Bytes 1–3 The
logical block address specifies the logical block where
the write operation begins.
ST3655 Family SCSI Drives Product Manual, Rev. A 45