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Promise FastTrak100 vs. AMI MegaRAID IDE100


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Promise FastTrak100 vs. AMI MegaRAID IDE100
  April 4, 2001 Author: Terry Baranski  


RAID 01/10...

Jump To AnalysisIOMeter - File Server Access PatternJump To Analysis
IOMeter TestsIO/secMB/secResponse TimeCPU Util.IO/CPU%
Load = Linear
AMI MegaRAID IDE100, RAID 10, 4 Drives70.86 0.78 14.11 ms 1.59 % 44.57
Promise FastTrak 100, RAID 01, 4 Drives64.72 0.70 15.45 ms 1.03 % 62.83
Load = Very Light
AMI MegaRAID IDE100, RAID 10, 4 Drives72.27 0.77 55.34 ms 1.54 % 46.93
Promise FastTrak 100, RAID 01, 4 Drives65.29 0.70 61.25 ms 1.13 % 57.78
Load = Light
AMI MegaRAID IDE100, RAID 10, 4 Drives83.22 0.89 192.21 ms 1.89 % 44.03
Promise FastTrak 100, RAID 01, 4 Drives69.26 0.75 230.97 ms 1.15 % 60.23
Load = Moderate
AMI MegaRAID IDE100, RAID 10, 4 Drives95.48 1.03 670.01 ms 2.17 % 44.00
Promise FastTrak 100, RAID 01, 4 Drives77.70 0.84 823.19 ms 1.38 % 56.30
Load = Heavy
AMI MegaRAID IDE100, RAID 10, 4 Drives108.69 1.18 2351.12 ms 2.86 % 38.00
Promise FastTrak 100, RAID 01, 4 Drives86.13 0.92 2965.51 ms 1.73 % 49.79

Jump To AnalysisIOMeter - Workstation Access PatternJump To Analysis
IOMeter TestsIO/secMB/secResponse TimeCPU Util.IO/CPU%
Load = Linear
AMI MegaRAID IDE100, RAID 10, 4 Drives83.43 0.65 11.98 ms 1.73 % 48.23
Promise FastTrak 100, RAID 01, 4 Drives77.49 0.61 12.90 ms 1.26 % 61.50
Load = Very Light
AMI MegaRAID IDE100, RAID 10, 4 Drives84.91 0.66 47.10 ms 1.70 % 49.95
Promise FastTrak 100, RAID 01, 4 Drives77.76 0.61 51.43 ms 1.37 % 56.76
Load = Light
AMI MegaRAID IDE100, RAID 10, 4 Drives95.67 0.75 167.22 ms 1.97 % 48.56
Promise FastTrak 100, RAID 01, 4 Drives82.54 0.64 193.81 ms 1.41 % 58.54
Load = Moderate
AMI MegaRAID IDE100, RAID 10, 4 Drives109.52 0.86 584.08 ms 2.36 % 46.41
Promise FastTrak 100, RAID 01, 4 Drives92.43 0.72 691.92 ms 1.56 % 59.25
Load = Heavy
AMI MegaRAID IDE100, RAID 10, 4 Drives125.23 0.98 2041.87 ms 3.07 % 40.79
Promise FastTrak 100, RAID 01, 4 Drives103.29 0.81 2474.14 ms 2.17 % 47.60

Jump To AnalysisIOMeter - Database8 Access PatternJump To Analysis
IOMeter TestsIO/secMB/secResponse TimeCPU Util.IO/CPU%
Load = Linear
AMI MegaRAID IDE100, RAID 10, 4 Drives80.62 0.63 12.40 ms 1.85 % 43.58
Promise FastTrak 100, RAID 01, 4 Drives69.70 0.54 14.34 ms 1.25 % 55.76
Load = Very Light
AMI MegaRAID IDE100, RAID 10, 4 Drives81.52 0.64 49.06 ms 1.85 % 44.06
Promise FastTrak 100, RAID 01, 4 Drives69.91 0.55 57.21 ms 1.37 % 51.03
Load = Light
AMI MegaRAID IDE100, RAID 10, 4 Drives91.62 0.72 174.63 ms 2.03 % 45.13
Promise FastTrak 100, RAID 01, 4 Drives75.93 0.59 210.68 ms 1.50 % 50.62
Load = Moderate
AMI MegaRAID IDE100, RAID 10, 4 Drives104.88 0.82 610.02 ms 2.44 % 42.98
Promise FastTrak 100, RAID 01, 4 Drives85.41 0.67 749.00 ms 1.86 % 45.92
Load = Heavy
AMI MegaRAID IDE100, RAID 10, 4 Drives119.55 0.93 2138.30 ms 3.22 % 37.13
Promise FastTrak 100, RAID 01, 4 Drives94.58 0.74 2701.93 ms 2.31 % 40.94

Jump To AnalysisIOMeter - Random Write PatternJump To Analysis
IOMeter TestsIO/secMB/secResponse TimeCPU Util.IO/CPU%
Load = Linear
AMI MegaRAID IDE100, RAID 10, 4 Drives195.04 1.52 5.12 ms 5.43 % 35.92
Promise FastTrak 100, RAID 01, 4 Drives128.10 1.00 7.80 ms 3.53 % 36.29
Load = Very Light
AMI MegaRAID IDE100, RAID 10, 4 Drives195.29 1.53 20.48 ms 5.52 % 35.38
Promise FastTrak 100, RAID 01, 4 Drives131.62 1.03 30.38 ms 4.44 % 29.64
Load = Light
AMI MegaRAID IDE100, RAID 10, 4 Drives195.28 1.53 81.92 ms 5.67 % 34.44
Promise FastTrak 100, RAID 01, 4 Drives131.60 1.03 121.57 ms 4.40 % 29.91
Load = Moderate
AMI MegaRAID IDE100, RAID 10, 4 Drives196.78 1.54 325.12 ms 5.70 % 34.52
Promise FastTrak 100, RAID 01, 4 Drives132.06 1.03 484.54 ms 4.66 % 28.34
Load = Heavy
AMI MegaRAID IDE100, RAID 10, 4 Drives205.48 1.61 1244.67 ms 6.73 % 30.53
Promise FastTrak 100, RAID 01, 4 Drives131.81 1.03 1941.17 ms 5.14 % 25.64

Jump To AnalysisIOMeter - Sequential Write PatternJump To Analysis
IOMeter TestsIO/secMB/secResponse TimeCPU Util.IO/CPU%
Load = Linear
AMI MegaRAID IDE100, RAID 10, 4 Drives154.28 38.57 6.48 ms 11.76 % 13.12
Promise FastTrak 100, RAID 01, 4 Drives4.08 1.02 245.23 ms 0.40 % 10.20
Load = Very Light
AMI MegaRAID IDE100, RAID 10, 4 Drives156.19 39.05 25.60 ms 12.18 % 12.82
Promise FastTrak 100, RAID 01, 4 Drives4.08 1.02 979.48 ms 0.47 % 8.68
Load = Light
AMI MegaRAID IDE100, RAID 10, 4 Drives156.10 39.03 102.48 ms 12.39 % 12.60
Promise FastTrak 100, RAID 01, 4 Drives4.08 1.02 3919.43 ms 0.39 % 10.46
Load = Moderate
AMI MegaRAID IDE100, RAID 10, 4 Drives155.92 38.98 410.39 ms 12.86 % 12.12
Promise FastTrak 100, RAID 01, 4 Drives4.08 1.02 15676.95 ms 0.51 % 8.00
Load = Heavy
AMI MegaRAID IDE100, RAID 10, 4 Drives154.46 38.61 1498.87 ms 11.14 % 13.87
Promise FastTrak 100, RAID 01, 4 Drives3.99 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...


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