User Guide

3-8 Ampex 1308910-01
Model No.
Running Head
Tape Cartridge Loading and Unloading ACL Application Programmer’s Guide
3.3 Tape Cartridge Loading and Unloading
3.3.1 DST 412
The aclPark() function, acl_park_chs utility, or the park command (using the front panel
controls in manual mode) places the CHS in the parked position. If you invoke any function
or utility that requires CHS movement, the door is closed, and the ACL is on-line, the CHS
will be automatically unparked.
To gain access to the storage bins,the CHS must be placed into the parked position . When the
door is opened, the CHS is locked in its parked position and any function or utility that
requires CHS movement will fail. The aclAuditLibrary() function and acl_audit_library
utiltiy will return
door open and position parked for the CHS element, with all other
element states reported as unknown. When you close the door, and place the ACL on-line, the
CHS automatically unparks, and performs an initialization routine to audit all elements and
update the internal database.
3.3.2 DST 712 and DST 812
The IMEX bins are used for loading and unloading of tape cartridges.
Loading a Tape Cartridge
When a tape cartridge is inserted in an IMEX bin, the ACL detects its presence and performs
a barcode read to update the internal database.
When the Auto Import configuration parameter is set to on, the ACL automatically transfers
the cartridge to an empty storage bin. (If all storage bins are full, the ACL returns Check
Condition status for the next SCSI command, causing the associated libacl function or ACL
utility to fail.)
When the Auto Import configuration parameter is set to off, the initiator must invoke a Tape
Cartridge Movement function or utility to transfer the tape cartridge to a storage bin or tape
drive.
Unloading a Tape Cartridge
Unloading a tape cartridge consists of moving it to an IMEX bin and manually removing it.
The ACL automatically updates element status in the internal database.