User Guide

3-6 Ampex 1308910-01
Model No.
Running Head
ACL Configuration ACL Application Programmer’s Guide
3.2.4 Multiple Port and Multiple Initiator Considerations
The two SCSI ports on the ACL system I/O panel are functionally equivalent. Each port is
independently addressable and neither port has priority over the other. If desired, you can
connect the ACL to two separate SCSI buses simultaneously. The ACL appears busy if two
initiators issue tape cartridge access commands simultaneously, however, and one of the
commands is rejected.
3.2.5 Configuration Parameters
Table 3-2 describes the ACL configuration parameters that set ACL behavior.
• µTo view the current parameter settings, use the aclGetParam() function or the
acl_getparam_library utility.
• To change a parameter setting, use the aclSetParam() function or the
acl_setparam_library utility.
The ACL keeps only one set of values for its configuration parameters and they apply to all
initiators in a multi-initiator SCSI configuration. The Save Page feature is not supported; all
configuration parameters are reset to their default values at power-up and after a hard reset.
Table 3-2. ACL Configuration Parameter Descriptions
Parameter State Description
Auto Store 0 (off)*
1 (on)
When the Auto Store configuration parameter is set to off, the initiator
must invoke a
Tape Cartridge Movement function or utility to
remove a cartridge from the drive (after the drive ejects the cartridge in
response to an Unload command).
When the Auto Store configuration parameter is set to on, the CHS
automatically returns any cartridge ejected by the drive to the storage
bin from which it was loaded (or, if this is unknown, to an empty
storage bin).
Auto Audit Override 0 (off)*
1 (on)
The ACL has an internal database which it keeps up to date. When
powered on with a tape cartridge in the drive, however, the ACL cannot
read the barcode ID on that cartridge until it is unloaded from the drive.
When the Auto Audit Override configuration parameter is set to off, the
ACL automatically executes a barcode read when it does not have a
barcode ID stored for the cartridge it unloads from the drive. When the
Auto Audit Override configuration parameter is set to on, this
functionality is suppressed.
Barcode Required
(DST 412)
0 (off)*
1 (on)
When the Barcode Required configuration parameter is set to on, the
ACL will not move a tape cartridge to a drive if it cannot read the
barcode on the cartridge.
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.