Compaq TL891 - DLT Tape Library Guia do Utilizador descarregar pdf (Página 14)

Chapter 1. Introduction

EK–TL891–UG. A01 1–5

1.3.3 Compression

The drives in the DLT MiniLibrary Base Module use the standard Digital

Lempel-Ziv (DLZ) data compression algorithm when compression is enabled.

1.3.4 Capacity

A Base Module with its ten-cartridge magazine offers formatted capacities as

shown below. When the TZ89n uses CompacTape III or IIIXT cartridges, its

capacity is limited accordingly.

Table 1-1 Tape Capacities*

DENSITY CARTRIDGE CAPACITY PER

CARTRIDGE

FULL MAGAZINE

COMPRESSED

TZ87 CompacTape III 10 GB 200 GB

TZ88 CompacTape IIIXT 15 GB 300 GB

TZ88 CompacTape IV 20 GB 400 GB

TZ89 CompacTape IV 35 GB 700 GB

Native capacities, uncompressed.

Maximum capacities given assume average 2:1 compression. Actual compression will

vary with file content. The native capacity for a full magazine is ten times the native

capacity per cartridge.

* For additional tape capacity information refer to the TZ89N User Guide (EK-TZ89N-UG).

1.3.5 Media Life

The media used in the DLT MiniLibrary is rated at over 1,000,000 head passes,

and a shelf life of at least 30 years.

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Compaq TL891 - DLT Tape Library Guia do Utilizador Página 14