Operating instructions

SEPTEMBER 2005 PRELIMINARY MAGNUM 1X7 LTO AUTOLOADER
2-7
SCSI COMMAND PROTOCOL
POSITION TO ELEMENT
(10 bytes)
2Bh Positions the cartridge loader at a specific location
(element address).
Chapter 12
PREVENT/ALLOW MEDIUM
REMOVAL (6 bytes)
1Eh Disables or enables the interlock mechanism in the
cartridge access port, preventing or allowing the
user from accessing cartridges through the cartridge
access port.
Chapter 13
READ BUFFER (10 bytes) 3Ch Copies the autoloader’s microcode or dump file
across the SCSI bus to the initiator. Used in
conjunction with the WRITE BUFFER command.
Chapter 14
READ ELEMENT STATUS
(12 bytes)
B8h Reports the status of its medium transport, storage,
and data transfer elements to the initiator.
Chapter 15
RECEIVE DIAGNOSTIC
RESULTS (6 bytes)
1Ch Returns diagnostic results from the last SEND
DIAGNOSTIC command.
Chapter 16
RELEASE (6 bytes or 10 bytes) 17h
57h
Releases elements (or the entire unit) from
reservations previously set by the initiator using the
RESERVE command.
Chapter 17
REQUEST SENSE (6 bytes) 03h Returns sense data to the initiator. Chapter 18
REQUEST VOLUME
ELEMENT ADDRESS
(12 bytes)
B5h Returns the element descriptors (including element
address and status flags for each element) created as
a result of the SEND VOLUME TAG command.
Data is returned in element address order.
Chapter 19
RESERVE (6 bytes or 10 bytes) 16h
56h
Reserves specific elements within the autoloader or
the entire unit for the initiator’s use.
Chapter 20
REZERO UNIT (6 bytes) 01h Implemented to provide software compatibility
when it is required. Because the autoloader does
not need to calibrate its mechanics, it always
returns and immediate Good status in response to
this command.
Chapter 21
SEND DIAGNOSTIC (6 bytes) 1Dh Requests that a self test or another specific test be
performed.
Chapter 22
SEND VOLUME TAG
(12 bytes)
B6h Compares the template it receives from the initiator
to the cartridge inventory information in memory,
and determines which bar code labels match the
template.
Chapter 23
Table 2-3 SCSI command set supported by the autoloader (continued)
When you issue this
command …
OP
Code
The autoloader does this … Discussed
in...