Figure 2.7: IBM Ultrium 2 Reads, Compression ratio 3:1
Figure 2.8: IBM Ultrium 2 Reads, Compression ratio Max:1
2.4 Data Transfer Rate Performance Summary
The IBM LTO Ultrium 2 tape drive achieves comparable data transfer rate improvements (with
large block sizes) with the 2 Gigabit Fibre Channel Adapter as compared with the Ultra3 SCSI
performance data in the original paper. And the 1 Gigabit Fibre Channel Adapter achieves the
same data transfer rates or lower than the 2 Gigabit Fibre Channel Adapter at small block sizes.
For large block sizes the 1 Gigabit Fibre Channel is considerably slower than the 2 Gigabit Fibre
channel.
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