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Chapter 1. System Description 1
1st ed., 6/30/04 - 312579601
Chapter 1. System Description
Automated Cartridge System Overview
The StorageTek Automated Cartridge System (ACS), called the library, is an automated
storage and retrieval facility for tape cartridges. The library incorporates the Host
Software Component (HSC) to accomplish automated mounting and dismounting of
resident cartridges for the library-attached cartridge transports. The library may be
attached to a maximum of 16 CPUs (hosts) with an HSC installed on each attached host
system.
The library consists of four major elements:
• Host Software Component (HSC)— functions as the interface between the host
operating system, and if applicable, a tape management interface (TMI).
• Library Storage Module (LSM)— contains storage cells for tape cartridges. The
storage capacity of an LSM depends upon the LSM model. There are several LSM
models available:
- Standard (Model 4410)
- PowderHorn (Model 9310)
- WolfCreek (Model 9360), which includes:
- 9360-100 (1,000 cartridge capacity)
- 9360-075 (750 cartridge capacity)
- 9360-050 (500 cartridge capacity)
- TimberWolf (Model 9740)
- StreamLine (Model 8500).
An attached Library Control Unit (LCU) with associated electronics controls LSM robot
movement. The LSM access door, contains a Cartridge Access Port (CAP), for entering or
removing tape cartridges from the LSM. The types of CAPs available, depending upon
how the LSMs are configured in an ACS, include:
- Standard and Enhanced CAP used in standard (4410) and PowderHorn (9310)
LSMs.
- WolfCreek (9360) standard 20-cell and optional 30-cell CAPs. The WolfCreek
LSM holds approximately 500, 750, or 1000 cartridges depending on the
number of cartridge drives, pass-thru ports, and CAPs installed.