Tandberg Data SDLT 600 - Manual (Page 33)

SDLT 600 Product Manual Chapter 3: SDLT 600 Tape Drive Specifications
81-81184-02 REV A01 March 2004 3-5
3.1.5 Storage Capacity
Table 3-5 provides native and compressed capacity ranges for the Super DLTtape II data cartridge:
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.
3.1.6 Data Integrity
SDLT 600 tape drive data transfer errors are extremely rare; Table 3-6 shows data integrity for the
overall SDLT 600 tape drive system.
Table 3-5. SDLT 600 Tape Drive Storage Capacity
Mode Capacity
Native Storage Capacity 300 GB
Compressed Storage Capacity 600 GB (2:1 compression ratio)
Table 3-6. Data Transfer Error Rates
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