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IOPS Scaling
In these tests, we tested the drive's ability to tackle multiple input/output operations. Again, we compared the Western Digital WD20EARX (6 Gbps) to the Western Digital WD20EARS (3 Gbps). For more performance comparisons, please take a look at The Hard Disk Drive Performance Comparison Guide.
4 KB Random Read
Outstanding I/Os |
WD20EARX (6 Gbps) |
WD20EARS (3 Gbps) |
Difference |
1 |
47 IOPS |
66 IOPS |
- 28.8% |
8 |
68 IOPS |
99 IOPS |
- 32.0% |
32 |
85 IOPS |
136 IOPS |
- 37.6% |
4 KB Random Write
Outstanding I/Os |
WD20EARX (6 Gbps) |
WD20EARS (3 Gbps) |
Difference |
1 |
46 IOPS |
50 IOPS |
- 6.6% |
8 |
48 IOPS |
49 IOPS |
- 3.5% |
32 |
47 IOPS |
50 IOPS |
- 6.1% |
512 KB Random Read
Outstanding I/Os |
WD20EARX (6 Gbps) |
WD20EARS (3 Gbps) |
Difference |
1 |
26 IOPS |
33 IOPS |
- 23.8% |
8 |
26 IOPS |
35 IOPS |
- 24.2% |
32 |
38 IOPS |
41 IOPS |
- 6.4% |
512 KB Random Write
Outstanding I/Os |
WD20EARX (6 Gbps) |
WD20EARS (3 Gbps) |
Difference |
1 |
32 IOPS |
33 IOPS |
- 3.7% |
8 |
32 IOPS |
34 IOPS |
- 5.4% |
32 |
32 IOPS |
34 IOPS |
- 6.2% |
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• The Improved 2 TB WD Caviar Green |
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• Testing The Improved 2 TB Caviar Green |
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