User Guide

Ampex 1308910-01 3-9

ACL Operational Characteristics Tape Cartridge Movement

3.4 Tape Cartridge Movement

You can use the following functions and utilities to move tape cartridges between ACL

elements.

• aclMoveCartridge() and acl_move_tape move a tape cartridge from the speciﬁed

source location to the speciﬁed destination location.

• aclMoveVolume() and acl_move_volume move the speciﬁed tape cartridge (identiﬁed

by barcode ID) to the designated location.

Note: To ensure that the source element is full or the destination element is empty, use the

aclAuditElement() function or the acl_audit_element utility.

Table 3-2 describes the ACL conﬁguration parameters that control how the ACL implements

a move command.

The ACL updates the internal database after each successful move command.

3.5 Operational Status

The following paragraphs describe the ACL status interface.

3.5.1 Unit Ready Status

You can use the aclTUR() function to check whether the ACL is ready for operation. When

the function succeeds, it indicates that the ACL is ready to perform all operations that can be

speciﬁed by the libacl API functions. When the function fails, it indicates the ACL is not yet

ready to perform all operations

3.5.2 Initialize Element Status

When the ACL detects any condition that could cause element status to change, it performs an

initialization routine to audit all elements and update their status in the internal database. This

includes reading and storing the barcode IDs of the tape cartridges contained therein.

The ACL performs an initialization routine when any of the following occurs:

• The ACL is powered on.

• A SCSI hard reset or Bus Device Reset message is received.

• ACL door status changes from open to closed.

• The ACL is placed in the on-line mode after being operated in a manual mode.