Controlling Software; Library Management Unit (Lmu); Figure 1-2. Acs Hardware With 80-Cell Cartridge Access Port - StorageTek 4410 Hardware Operator's Manual

Figure 1-2. ACS Hardware with 80-Cell Cartridge Access Port

LMU
Library Storage Module
LSM
Library Management Unit
LMU
Library Control Unit
LCU
Cartridge Drive
CD
Control Unit
CU

Controlling Software

The controlling software is the overall manager of the library, the interface between the
operating system and each ACS. It intercepts or receives mount/dismount messages,
translates them into move requests, and routes them to the library management unit
(LMU).

Library Management Unit (LMU)

The LMU is the interface between the controlling software and the library control unit
(LCU). A single LMU manages from 1 to 16 LSMs. It can receive mount and dismount
requests from as many as 16 hosts. When a mount request is received, the LMU sends
commands to the LCU that is attached to the correct LSM.
9206
LSM
LCU
CARTRIDGE
ACCESS
PORT
Eleventh Edition
CD
CD
System Components
CU
C29385
1-3