RAID 01/10...

Jump To Analysis IOMeter - File Server Access Pattern Jump To Analysis

IOMeter Tests IO/sec MB/sec Response Time CPU Util. IO/CPU% Load = Linear AMI MegaRAID IDE100, RAID 10, 4 Drives 70.86 0.78 14.11 ms 1.59 % 44.57 Promise FastTrak 100, RAID 01, 4 Drives 64.72 0.70 15.45 ms 1.03 % 62.83 Load = Very Light AMI MegaRAID IDE100, RAID 10, 4 Drives 72.27 0.77 55.34 ms 1.54 % 46.93 Promise FastTrak 100, RAID 01, 4 Drives 65.29 0.70 61.25 ms 1.13 % 57.78 Load = Light AMI MegaRAID IDE100, RAID 10, 4 Drives 83.22 0.89 192.21 ms 1.89 % 44.03 Promise FastTrak 100, RAID 01, 4 Drives 69.26 0.75 230.97 ms 1.15 % 60.23 Load = Moderate AMI MegaRAID IDE100, RAID 10, 4 Drives 95.48 1.03 670.01 ms 2.17 % 44.00 Promise FastTrak 100, RAID 01, 4 Drives 77.70 0.84 823.19 ms 1.38 % 56.30 Load = Heavy AMI MegaRAID IDE100, RAID 10, 4 Drives 108.69 1.18 2351.12 ms 2.86 % 38.00 Promise FastTrak 100, RAID 01, 4 Drives 86.13 0.92 2965.51 ms 1.73 % 49.79

Jump To Analysis IOMeter - Workstation Access Pattern Jump To Analysis

IOMeter Tests IO/sec MB/sec Response Time CPU Util. IO/CPU% Load = Linear AMI MegaRAID IDE100, RAID 10, 4 Drives 83.43 0.65 11.98 ms 1.73 % 48.23 Promise FastTrak 100, RAID 01, 4 Drives 77.49 0.61 12.90 ms 1.26 % 61.50 Load = Very Light AMI MegaRAID IDE100, RAID 10, 4 Drives 84.91 0.66 47.10 ms 1.70 % 49.95 Promise FastTrak 100, RAID 01, 4 Drives 77.76 0.61 51.43 ms 1.37 % 56.76 Load = Light AMI MegaRAID IDE100, RAID 10, 4 Drives 95.67 0.75 167.22 ms 1.97 % 48.56 Promise FastTrak 100, RAID 01, 4 Drives 82.54 0.64 193.81 ms 1.41 % 58.54 Load = Moderate AMI MegaRAID IDE100, RAID 10, 4 Drives 109.52 0.86 584.08 ms 2.36 % 46.41 Promise FastTrak 100, RAID 01, 4 Drives 92.43 0.72 691.92 ms 1.56 % 59.25 Load = Heavy AMI MegaRAID IDE100, RAID 10, 4 Drives 125.23 0.98 2041.87 ms 3.07 % 40.79 Promise FastTrak 100, RAID 01, 4 Drives 103.29 0.81 2474.14 ms 2.17 % 47.60

Jump To Analysis IOMeter - Database8 Access Pattern Jump To Analysis

IOMeter Tests IO/sec MB/sec Response Time CPU Util. IO/CPU% Load = Linear AMI MegaRAID IDE100, RAID 10, 4 Drives 80.62 0.63 12.40 ms 1.85 % 43.58 Promise FastTrak 100, RAID 01, 4 Drives 69.70 0.54 14.34 ms 1.25 % 55.76 Load = Very Light AMI MegaRAID IDE100, RAID 10, 4 Drives 81.52 0.64 49.06 ms 1.85 % 44.06 Promise FastTrak 100, RAID 01, 4 Drives 69.91 0.55 57.21 ms 1.37 % 51.03 Load = Light AMI MegaRAID IDE100, RAID 10, 4 Drives 91.62 0.72 174.63 ms 2.03 % 45.13 Promise FastTrak 100, RAID 01, 4 Drives 75.93 0.59 210.68 ms 1.50 % 50.62 Load = Moderate AMI MegaRAID IDE100, RAID 10, 4 Drives 104.88 0.82 610.02 ms 2.44 % 42.98 Promise FastTrak 100, RAID 01, 4 Drives 85.41 0.67 749.00 ms 1.86 % 45.92 Load = Heavy AMI MegaRAID IDE100, RAID 10, 4 Drives 119.55 0.93 2138.30 ms 3.22 % 37.13 Promise FastTrak 100, RAID 01, 4 Drives 94.58 0.74 2701.93 ms 2.31 % 40.94

Jump To Analysis IOMeter - Random Write Pattern Jump To Analysis

IOMeter Tests IO/sec MB/sec Response Time CPU Util. IO/CPU% Load = Linear AMI MegaRAID IDE100, RAID 10, 4 Drives 195.04 1.52 5.12 ms 5.43 % 35.92 Promise FastTrak 100, RAID 01, 4 Drives 128.10 1.00 7.80 ms 3.53 % 36.29 Load = Very Light AMI MegaRAID IDE100, RAID 10, 4 Drives 195.29 1.53 20.48 ms 5.52 % 35.38 Promise FastTrak 100, RAID 01, 4 Drives 131.62 1.03 30.38 ms 4.44 % 29.64 Load = Light AMI MegaRAID IDE100, RAID 10, 4 Drives 195.28 1.53 81.92 ms 5.67 % 34.44 Promise FastTrak 100, RAID 01, 4 Drives 131.60 1.03 121.57 ms 4.40 % 29.91 Load = Moderate AMI MegaRAID IDE100, RAID 10, 4 Drives 196.78 1.54 325.12 ms 5.70 % 34.52 Promise FastTrak 100, RAID 01, 4 Drives 132.06 1.03 484.54 ms 4.66 % 28.34 Load = Heavy AMI MegaRAID IDE100, RAID 10, 4 Drives 205.48 1.61 1244.67 ms 6.73 % 30.53 Promise FastTrak 100, RAID 01, 4 Drives 131.81 1.03 1941.17 ms 5.14 % 25.64

Jump To Analysis IOMeter - Sequential Write Pattern Jump To Analysis

IOMeter Tests IO/sec MB/sec Response Time CPU Util. IO/CPU% Load = Linear AMI MegaRAID IDE100, RAID 10, 4 Drives 154.28 38.57 6.48 ms 11.76 % 13.12 Promise FastTrak 100, RAID 01, 4 Drives 4.08 1.02 245.23 ms 0.40 % 10.20 Load = Very Light AMI MegaRAID IDE100, RAID 10, 4 Drives 156.19 39.05 25.60 ms 12.18 % 12.82 Promise FastTrak 100, RAID 01, 4 Drives 4.08 1.02 979.48 ms 0.47 % 8.68 Load = Light AMI MegaRAID IDE100, RAID 10, 4 Drives 156.10 39.03 102.48 ms 12.39 % 12.60 Promise FastTrak 100, RAID 01, 4 Drives 4.08 1.02 3919.43 ms 0.39 % 10.46 Load = Moderate AMI MegaRAID IDE100, RAID 10, 4 Drives 155.92 38.98 410.39 ms 12.86 % 12.12 Promise FastTrak 100, RAID 01, 4 Drives 4.08 1.02 15676.95 ms 0.51 % 8.00 Load = Heavy AMI MegaRAID IDE100, RAID 10, 4 Drives 154.46 38.61 1498.87 ms 11.14 % 13.87 Promise FastTrak 100, RAID 01, 4 Drives 3.99 1.00 56301.15 ms 0.54 % 7.39

 

As seen through the scores above, the MegaRAID's RAID 10 performance is significantly better all-around than that of a single drive. The scores are virtually identical to the MegaRAID's 2-drive RAID 0 performance, save for the sequential write results which hover 15MB/sec lower.

The FastTrak's RAID 01 performance, on the other hand, is significantly worse than that of just a single drive in the Workstation, File Server, Database8, and Sequential Write tests under light, moderate, and heavy loads. (Under linear and very light loads, performance is about equal.) These scores are obviously disappointing, as we see no reason why RAID 01 performance should be worse than that of a single drive. Random write performance improves somewhat, though not enough to offset the lackluster scores in the other tests.

 Conclusion...