Performance factors for HP ProLiant Serial Attached Storage (SAS)

Figure 6. Sequential Read comparison of four 10K SFF drives RAID-5 with four 15K SFF drives RAID-5.

40%

60%

80%

100%

120%

140%

160%

64KiB

SEQ READ

256KiB

SEQ READ

512KiB

SEQ READ

1MiB

SEQ READ

Relative Performance - ( % )

1x4-Drv, P411, fw:3.50, 512MB, R5(256KB), 1-D2700, 1LD

1x4-Drv,P411, fw:3.50,512MB, R5(256KB),1-D2700,1LD

100%= 10K SFF; fw:3.50

RAID-5 Sequential Read Performance; P411

4-146GB 15K, 6Gb SFF SAS vs 4-146GB 10K, 6Gb SFF SAS