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IOPS Scaling
In these tests, we tested the drive's ability to tackle multiple input/output operations - a very important attribute if you wish to use the new VelociRaptor in a server, or server-type application. This reflects not only on the drive's raw performance but also that of its controller and firmware.
Here, we compared the new 1 TB Western Digital VelociRaptor to the 600 GB VelociRaptor. For more performance comparisons, please take a look at The Hard Disk Drive Performance Comparison Guide.
4 KB Random Read
Outstanding I/Os |
1 TB VelociRaptor |
600 GB VelociRaptor |
Difference |
1 |
148 IOPS |
144 IOPS |
+ 3.1% |
8 |
240 IOPS |
226 IOPS |
+ 6.3% |
32 |
344 IOPS |
311 IOPS |
+ 10.5% |
4 KB Random Write
Outstanding I/Os |
1 TB VelociRaptor |
600 GB VelociRaptor |
Difference |
1 |
129 IOPS |
306 IOPS |
- 57.7% |
8 |
127 IOPS |
305 IOPS |
- 58.2% |
32 |
127 IOPS |
308 IOPS |
- 58.9% |
512 KB Random Read
Outstanding I/Os |
1 TB VelociRaptor |
600 GB VelociRaptor |
Difference |
1 |
71 IOPS |
87 IOPS |
- 17.9% |
8 |
73 IOPS |
92 IOPS |
- 20.5% |
32 |
85 IOPS |
111 IOPS |
- 23.2% |
512 KB Random Write
Outstanding I/Os |
1 TB VelociRaptor |
600 GB VelociRaptor |
Difference |
1 |
74 IOPS |
133 IOPS |
- 44.6% |
8 |
73 IOPS |
133 IOPS |
- 44.7% |
32 |
73 IOPS |
133 IOPS |
- 44.8% |
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• The WD VelociRaptor (WD1000DHTZ) |
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• Testing The WD1000DHTZ |
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