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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 4 TB Western Digital RE (WD4000FYYZ) to the 2 TB Western Digital RE4-GP. For more performance comparisons, please take a look at The Hard Disk Drive Performance Comparison Guide.
Note the jump in performance when the two drives were stressed with simultaneous transactions. The WD RE (4 TB)'s dual-core processor is certainly helping to greatly increase the number of sequential transactions the drive can process. However, the effect is less marked due to the seek delay.
4 KB Random Read
Outstanding I/Os |
WD RE (4 TB) |
WD RE4-GP (2 TB) |
Difference |
1 |
81 IOPS |
72 IOPS |
+ 12.0% |
8 |
127 IOPS |
115 IOPS |
+ 8.0% |
32 |
172 IOPS |
162 IOPS |
+ 6.7% |
4 KB Random Write
Outstanding I/Os |
WD RE (4 TB) |
WD RE4-GP (2 TB) |
Difference |
1 |
203 IOPS |
177 IOPS |
+ 14.9% |
8 |
203 IOPS |
177 IOPS |
+ 14.8% |
32 |
208 IOPS |
177 IOPS |
+ 17.4% |
512 KB Random Read
Outstanding I/Os |
WD RE (4 TB) |
WD RE4-GP (2 TB) |
Difference |
1 |
57 IOPS |
34 IOPS |
+ 65.1% |
8 |
58 IOPS |
36 IOPS |
+ 63.6% |
32 |
83 IOPS |
44 IOPS |
+ 91.2% |
512 KB Random Write
Outstanding I/Os |
WD RE (4 TB) |
WD RE4-GP (2 TB) |
Difference |
1 |
89 IOPS |
85 IOPS |
+ 5.0% |
8 |
88 IOPS |
85 IOPS |
+ 3.0% |
32 |
89 IOPS |
85 IOPS |
+ 4.9% |
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• The 4 TB Western Digital RE |
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• Peeking Under The PCB |
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• Better Reliability Through Technology |
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• Testing The 4 TB Western Digital RE |
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