Quantum 1200 Series DAT Autochanger Manual de usuario Pagina 34

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Chapter 2 SDLT 600 Tape Drive Specifications
Product Specifications
SDLT 600 Product Manual 18
Storage Capacity 2 Table 5 provides native and compressed capacity ranges for the Super
DLTtape II data cartridge:
Table 5 SDLT 600 Tape Drive
Storage Capacity
In accordance with industry practice, a typical compression ratio of 2:1 is
quoted. The redundancy and type of data files being written determine
the actual compression ratios achieved.
Data Integrity 2 SDLT 600 tape drive data transfer errors are extremely rare; table 5 shows
data integrity for the overall SDLT 600 tape drive system.
Table 6 Date Transfer Error
Rates
Mode Capacity
Native Storage Capacity 300 GB
Compressed Storage Capacity 600 GB (2:1 compression ratio)
Error Type Frequency
Detected, Recoverable (ECC)
READ
< 1 error in 10
6
bytes read
Detected, Unrecoverable READ < 1 error in 10
17
bits read
Undetected READ < 1 error in 10
27
bits read
Rewrite of Data < 1 per 10
6
bytes written
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