Performance in WinBench 99

Finally, here are data-transfer graphs recorded in WinBench 99. We could not record it for the degraded RAID6 with two failed disks as the program would issue an error message.

• Data-transfer graph for a single Fujitsu MBA3073RC disk on the LSI controller

And these are the data-transfer graphs of the RAID arrays built on the LSI 8708EM2 controller:

• RAID0, 4 disks
• RAID0, 8 disks
• RAID10, 4 disks
• RAID10, 8 disks
• RAID10, 8 disks minus 1
• RAID5, 4 disks
• RAID5, 8 disks
• RAID5, 8 disks minus 1
• RAID6, 4 disks
• RAID6, 8 disks
• RAID6, 8 disks minus 1

The following diagram compares the read speeds of the arrays at the beginning and end of the partitions created on them:

Everything is neat in this diagram. The speed grows up from array to array in a predictable way and with almost ideal scalability (the 8-disk RAID5 spoils the picture somewhat).