Compaq TL891 - DLT Tape Library Guide de l'utilisateur Page 14

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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
A
FULL MAGAZINE
COMPRESSED
B
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
A
Native capacities, uncompressed.
B
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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