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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 Sequential Read
Outstanding I/Os |
WD20EARX (6 Gbps) |
WD20EARS (3 Gbps) |
Difference |
1 |
13,390 IOPS |
14,148 IOPS |
- 5.4% |
8 |
21,198 IOPS |
20,811 IOPS |
+ 1.9% |
32 |
21,312 IOPS |
20,749 IOPS |
+ 2.7% |
4 KB Sequential Write
Outstanding I/Os |
WD20EARX (6 Gbps) |
WD20EARS (3 Gbps) |
Difference |
1 |
10,670 IOPS |
10,796 IOPS |
- 1.2% |
8 |
17,648 IOPS |
17,260 IOPS |
+ 2.2% |
32 |
17,590 IOPS |
17,232 IOPS |
+ 2.1% |
512 KB Sequential Read
Outstanding I/Os |
WD20EARX (6 Gbps) |
WD20EARS (3 Gbps) |
Difference |
1 |
228 IOPS |
245 IOPS |
- 7.1% |
8 |
228 IOPS |
246 IOPS |
- 7.2% |
32 |
228 IOPS |
245 IOPS |
- 7.1% |
512 KB Sequential Write
Outstanding I/Os |
WD20EARX (6 Gbps) |
WD20EARS (3 Gbps) |
Difference |
1 |
225 IOPS |
245 IOPS |
- 8.2% |
8 |
226 IOPS |
245 IOPS |
- 7.8% |
32 |
227 IOPS |
246 IOPS |
- 7.8% |
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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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