Tandberg Data
SCSI Commands
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Tandberg SLR Autoloader SCSI Functional Specifications
2-17
1st Data Transfer Element Address
The first data transfer element address field identifies the first data transfer
element contained in the medium changer. The default starting address is
F0h.
Number of Data Transfer Elements
The number of data transfer elements field defines the total number of data
transfer elements contained in the medium changer. This field should match
the value returned on MODE SENSE.
2.5.4
Library Mode Page 23h
The library mode page (23h) is defined as follows:
Bit
Byte
7
6
5
4
3
2
1
0
0
Reserved
Page Code (23h)
1
Additional Page Length (2h)
2
TapeAlrt
Reserved
Recirc
UnldMd
Library Mode
3
Reserved
TapeAlrt
A TapeAlert (TapeAlrt) bit of zero indicates that TapeAlert reporting is
disabled. A TapeAlert bit of one indicates that TapeAlert reporting is
enabled.
UnldMd
An Unload Mode (UnldMd) bit of zero selects the operating mode of the
library as Implicit Unload. An UnldMd bit of one selects the operating mode
of the library as Explicit Unload. If the library is set to Explicit Unload
mode, the specified tape drive must be in the unloaded state before
attempting to issue a MOVE MEDIUM command with the tape drive as the
source element address. If the library is set to Implicit Unload mode, it is
not necessary for the specified tape drive to be in the unloaded state before
issuing the MOVE MEDIUM command.
Recirc
A Recirc bit of zero indicates that the library does not recirculate if set to
sequential mode (Library Mode 001b, 010b, or 011b). In sequential non-
recirculate mode, the library will stop autoloading cartridges after
unloading the last cartridge in the stack. A Recirc bit of one indicates that
the library will recirculate if set to a sequential operating mode. In
sequential recirculate mode, the library will loop back to autoload the first
cartridge in the stack after unloading the last cartridge. The Recirc bit has
no effect when operating in random mode (Library Mode 000b).
Library Mode
The library mode field indicates the current operating mode of the library.
Library Mode
Description
000b
Random
001b
Sequential
010b-111b
Reserved
