Chapter 7 - Interfaces; Parallel Scsi Interface; Table 18. Scsi Message Codes - Certance LTO 1 User Manual

7. Interfaces
This chapter describes the LTO-1 and LTO-2 drive interfaces.
Topics in this chapter are:
"Parallel SCSI Interface" on page 65
•
"Fibre Channel Interface" on page 66
•
"Commands" on page 66
•
"Typical System Configurations" on page 68
•

Parallel SCSI Interface

The LTO-1 and LTO-2 drives feature a multi-mode LVD or HVD single-ended SCSI-2 interface. The
drive's SCSI-2 interface allows for communication between the host computer and the tape drive.
The SCSI-2 interface conforms to requirements outlined in ANSI X3.131, 1994. The LTO-1 and LTO-
2 drives also support some SCSI-3 command extensions.
The Parallel SCSI interface for the LTO-1 and LTO-2 drives conforms with the ANSI X3.131, 1994
standard. Table 18 on page 65 lists the message codes for this interface.

Table 18. SCSI Message Codes

Code
00h
02h
04h
05h
06h
07h
08h
0Ch
80h
C0h
2
01h
03h
1
Direction is defined as follows: In = Drive to Host; Out = Host to Drive.
2
The LTO-1 and LTO-2 drives support one Extended Message: Synchronous Data Transfer Request.
Description
Command Complete
Save Data Pointer
Disconnect
Initiator Detected Error
Abort
Message Reject
No Operation
Bus Device Reset
Identify (No Disconnect/Reconnect)
Identify (Disconnect/Reconnect)
Extended Message
Wide Data Transfer Request
1
Direction
In
In
In
Out
Out
In/Out
Out
Out
In/Out
In/Out
In/Out
In/Out
65