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IOPS Scaling (Random)
In these tests, we tested the drive's ability to tackle multiple input/output operations. Again, we compared the 4 TB Western Digital Red (WD40EFRX) to the 3 TB Western Digital Red (WD30EFRX). For more performance comparisons, please take a look at The Hard Disk Drive Performance Comparison Guide.
The 4 TB Western Digital Red (WD40EFRX)'s newer Marvell 88i9446 dual-core processor appears to be slightly better at handling multiple random reads than the Marvell 88i9346 dual-core processor used in the 3 TB Red.
4 KB Random Read
Outstanding I/Os |
WD Red (4 TB) |
WD Red (3 TB) |
Difference |
1 |
61 IOPS |
45 IOPS |
+ 36.3% |
8 |
95 IOPS |
73 IOPS |
+ 31.5% |
32 |
135 IOPS |
94 IOPS |
+ 44.2% |
4 KB Random Write
Outstanding I/Os |
WD Red (4 TB) |
WD Red (3 TB) |
Difference |
1 |
57 IOPS |
50 IOPS |
+ 13.0% |
8 |
59 IOPS |
50 IOPS |
+ 17.8% |
32 |
57 IOPS |
49 IOPS |
+ 15.0% |
512 KB Random Read
Outstanding I/Os |
WD Red (4 TB) |
WD Red (3 TB) |
Difference |
1 |
34 IOPS |
28 IOPS |
+ 18.8% |
8 |
34 IOPS |
29 IOPS |
+ 18.2% |
32 |
44 IOPS |
38 IOPS |
+ 14.2% |
512 KB Random Write
Outstanding I/Os |
WD Red (4 TB) |
WD Red (3 TB) |
Difference |
1 |
39 IOPS |
36 IOPS |
+ 10.4% |
8 |
39 IOPS |
36 IOPS |
+ 8.6% |
32 |
39 IOPS |
36 IOPS |
+ 9.5% |
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• Testing The 4 TB Western Digital Red |
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• Transfer Rate Range, Platter Profile |
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