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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 Sequential Read
Outstanding I/Os |
1 TB VelociRaptor |
600 GB VelociRaptor |
Difference |
1 |
12,822 IOPS |
14,680 IOPS |
- 12.7% |
8 |
39,690 IOPS |
19,692 IOPS |
+ 101.6% |
32 |
40,794 IOPS |
19,737 IOPS |
+ 106.7% |
4 KB Sequential Write
Outstanding I/Os |
1 TB VelociRaptor |
600 GB VelociRaptor |
Difference |
1 |
13,542 IOPS |
11,709 IOPS |
+ 15.7% |
8 |
37,158 IOPS |
18,506 IOPS |
+ 100.8% |
32 |
40,664 IOPS |
18,418 IOPS |
+ 120.8% |
512 KB Sequential Read
Outstanding I/Os |
1 TB VelociRaptor |
600 GB VelociRaptor |
Difference |
1 |
397 IOPS |
293 IOPS |
+ 35.6% |
8 |
398 IOPS |
293 IOPS |
+ 35.7% |
32 |
398 IOPS |
293 IOPS |
+ 35.7% |
512 KB Sequential Write
Outstanding I/Os |
1 TB VelociRaptor |
600 GB VelociRaptor |
Difference |
1 |
397 IOPS |
293 IOPS |
+ 35.7% |
8 |
398 IOPS |
292 IOPS |
+ 36.5% |
32 |
398 IOPS |
291 IOPS |
+ 36.8% |
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• The WD VelociRaptor (WD1000DHTZ) |
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• Testing The WD1000DHTZ |
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