User Guide

Ampex 1308910-01 3-7
ACL Operational Characteristics ACL Configuration
3.2.6 Power Up and Hard Reset
When the ACL is powered on or reset from the SCSI bus (hard reset or Bus Device Reset
message), it performs a boot sequence. During the boot sequence, the ACL loads the operating
program, initializes its subsystems, performs internal self tests, resets its configuration
parameters to their default values, and clears its internal logs.
The ACL does not accept any SCSI commands other than Inquiry or Test Unit Ready until
it is ready for operation (see “Unit Ready Status” on page 3-9). When the boot sequence
completes successfully, Unit Attention is sent to all initiators to signal that the configuration
parameters have changed.
After completing the boot sequence successfully, the ACL performs an initialization routine
to update its internal database. Further updating of the database occurs automatically
whenever the ACL detects a condition that could cause element status to change (see
“Initialize Element Status” on page 3-9).
Barcode Required
(DST 712 and DST
812)
0 (off)*
1 (on)
When the Barcode Required configuration parameter is set to on, the
ACL will not move a tape cartridge to a storage bin if it cannot read the
barcode on the cartridge. It will, however, permit movement of the
cartridge between an IMEX bin and a drive.
When the Barcode Required configuration parameter is set to off, the
ACL does not restrict movement of a tape cartridge that does not have a
readable barcode ID.
Auto Import
(DST 412)
0 (off) The ACL does not have any Import/Export Elements.
Auto Import
(DST 712 and DST
812)
0 (off)*
1 (on)
The ACL detects the presence of a tape cartridge when it is inserted into
an IMEX bin. When the Auto Import configuration parameter is set to
on, the ACL automatically transfers the cartridge to a storage bin. When
the Auto Import configuration parameter is set to off, this functionality
is suppressed and the initiator must move the cartridge to a storage bin
(or tape drive).
* Default state.
Table 3-2. ACL Configuration Parameter Descriptions (Continued)
Parameter State Description