Figure 3-4 shows a comparison line graph of the raw performance data obtain for TS1150  drives and LTO7 drives that use the same configurations. It is clear that using small files, the  comparison between the two types of drives is minimal. However, when migrating file sizes of  1 GiB and greater, there is a noticeable difference. Comparing the biggest configuration of  2N4D8T, the LTO peaks at a total combined transfer rate of 1921.7 MiB/s. With the same  configuration but with TS1150 drives, it peaks at a total combined transfer rate of  2315.3 MiB/s. 2315.3 2016.4 1473.4 577.3 369.0 1921.7 1731.8 1287.8 561.8 365.4 624.3 583.6 465.8 186.3 114.0 493.7 439.2 406.7 178.4 111.0 0.0 500.0 1000.0 1500.0 2000.0 2500.0 1 10 100 1000 10000 100000 TRANSFER RATE (MB/SEC ) FILE SIZE (MEGA BYTES) Migration Performance by File Size (Comparison between Drive Types ) 8 T ape Driv e s (T S1150) 8 T ape Driv e s (LT O 7 ) T ape Driv e (T S1150) T ape Driv e (LT O 7) T ape Driv e (T S1150) T ape Driv e (LT O 7) Figure 3-4 Comparison between TS1150 and LTO-7 drives using multiple nod e/drive configurations 48  IBM Spectrum Archive Enterprise Edition V1.2.6: Installation and Configuration Guide