In conclusion I would like to offer you the linear read graphs for each array tested:

• 1 HDD JBOD (Graph)
• 2 HDD RAID0 (Graph)
• 2 HDD RAID1 (Graph)
• 3 HDD RAID0 (Graph)
• 3 HDD RAID5 (Graph)
• 4 HDD RAID0 (Graph)
• 4 HDD RAID5 (Graph)
• 4 HDD RAID10 (Graph)
• 5 HDD RAID0 (Graph)
• 5 HDD RAID5 (Graph)
• 6 HDD RAID0 (Graph)
• 6 HDD RAID5 (Graph)
• 6 HDD RAID10 (Graph)
• 7 HDD RAID0 (Graph)
• 7 HDD RAID5 (Graph)
• 8 HDD RAID0 (Graph)
• 8 HDD RAID5 (Graph)
• 8 HDD RAID10 (Graph)
• 4 HDD RAID0 (Graph)
• 4 HDD RAID5 (Graph)
• 4 HDD RAID10 (Graph)

Conclusion

The increase in the cache memory size allowed 3ware 9500S-8 controller to improve its performance significantly, especially in the work modes with high share of write requests. I would also like to specifically stress the higher controller performance with RAID5 arrays thanks to a more powerful XOR processor working at 150MHz frequency.

Very soon we are going to introduce to you a newer controller from 3ware, which is already available in the market, the 9550SX. But this will be another story already…