HP Xw6400 Performance of RAID 0 Drive Configurations - Page 3

Benchmarks The charts below compare the performance of the File Server workload and Workstation workload using the IOMeter test harness. The charts show the performance improvement of a 4 disk RAID 0 configuration over a single disk configuration. Relative Performance Worksation Workload RAID 0 Performance 9.0 Single Disk 8.0 4 Disk RAID 0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0.0 SATA 10K NCQ SAS 10K SAS 15K Chart 1 Workstation Workload RAID 0 Performance Relative Performance File Server Workload RAID 0 Performance 10.0 Single Disk 9.0 4 Disk RAID 0 8.0 7.0 6.0 5.0 4.0 3.0 2.0 1.0 0.0 SATA 10K NCQ SAS 10K SAS 15K Chart 2 File Server Workload RAID 0 Performance Results As shown in the first chart, the 4 disk RAID 0 array has a clear performance advantage for the Workstation workload - almost 3x as fast for SATA disks, almost 5x the performance of the 10K SAS disk, and almost 8x as fast as the SAS 15K disk. A similar result is seen for the File Server Workload. For those who need the best performance, regardless of cost, a RAID 0 configuration of SAS 15K disks can be a great choice. The 10K SATA Drives are also relatively fast and represent an excellent price/performance tradeoff, as the SAS drives are relatively expensive. 3