Chapter 4 — Library Specifications Tape Drive and Media Specifications
September 2022 Site Preperation Guide—Spectra T200, T380, and T680 Library
48
LTO -4 Drive
When connecting to a Fibre Channel network, LTO-4 Fibre Channel drives
will attempt to connect at 4 Gb/second, but will auto-negotiate down to
2 Gb/second or 1 Gb/second, depending on the requirements of the port to
which the drive is connected.
Note: LTO-4 drives are no longer available for purchase
LTO -3 Drives
Note: LTO-3 drives are no longer available for purchase.
Parameter Specification
Sustained transfer rate
a, b
a. Assuming a 2:1 compression ratio. Compression throughput depends on the type of data.
b. This is a per-drive value.
120 MB/second native
c
240 MB/second compressed
c. A 1 Gb interface speed will not stream an LTO-4 drive at 120 MB/second.
Average space record time 70 seconds
Encryption capability AES 256-bit
WORM capability Yes
MTBF 250,000 hours at 100% duty cycle
Uncorrected error rate 1 x 10
–17
bits
Power consumption -
Fibre Channel
b
Read/write: 29.5 watts typical
Idle: 12.5 watts
Power consumption -
SCSI
b
Read/write: 26.5 watts typical
Idle: 9.5 watts
Parameter Specification
Sustained transfer rate
a, b
a. Compression throughput depends on the type of data.
b. This is a per-drive value.
80 MB/second native
160 MB/second compressed
Average file access time 54 seconds
Encryption capability No
WORM capability Yes
MTBF 250,000 hours at 100% duty cycle
Uncorrected error rate 1 x 10
–17
bits
Power consumption
b
28 watts typical
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