Operator's Guide

2
Librar
y
Description
1
The ACL 4/52 library (figure 1) is the automated storage and
retrieval component of an automated tape library system. It
accommodates either four DLT 2000, four DLT 4000, or four DLT
7000 tape drives and is capable of storing a maximum of 48 Digital
Linear Tape (DLT) cartridges in a Fixed Storage Array (FSA). An
operator-accessible load port at the front of the library can hold an
additional four tape cartridges for a total of 52. A host computer
communicates with the library through a SCSI interface using the
SCSI-2 medium changer command set. In a typical operation, the
host commands the robotics to transfer tape cartridges between
storage bins (in the FSA), tape drives, and the load port. Each time
a tape cartridge is transferred, a gripping mechanism is moved to
the tape cartridge location where it “picks” the tape cartridge, then
moves to and “places” the cartridge in the new location.
Fi
g
ure 1 ACL 4/52 Librar
y
Control Panel
Tape Drives (4)
Fixed Storage Array (FSA)
Horizontal Carriage
Vertical Carriage
(Front)
(Left Side Cosmetic Panel Removed)
TA00038d
Gripper
(48 Cartridge Bins)
Load Port
Front Door
(DLT 7000 shown)