Page 9 : IOPS Sequential Scaling Performance

IOPS Scaling (Sequential)

In these tests, we tested the drive’s ability to tackle multiple input/output operations. Again, we compared the 8 TB Western Digital Gold to the 6 TB Western Digital Black – the fastest desktop-grade hard disk drive in Western Digital’s arsenal. For more performance comparisons, please take a look at The Hard Disk Drive Performance Comparison Guide.

It is obvious that the “price” for almost doubling the small random write performance is poorer sequential read and write performance.

 

4 KB Sequential Read

Outstanding I/Os	WD Gold (8 TB)	WD Black (6 TB)	Difference
1	22,185 IOPS	23,150 IOPS	– 4.2%
8	44,074 IOPS	51,435 IOPS	– 14.3%
32	42,976 IOPS	51,861 IOPS	– 17.1%

 

4 KB Sequential Write

Outstanding I/Os	WD Gold (8 TB)	WD Black (6 TB)	Difference
1	13,162 IOPS	20,639 IOPS	– 36.2%
8	45,863 IOPS	46,924 IOPS	– 2.3%
32	47,559 IOPS	55,433 IOPS	– 14.2%

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512 KB Sequential Read

Outstanding I/Os	WD Gold (8 TB)	WD Black (6 TB)	Difference
1	399 IOPS	430 IOPS	– 7.2%
8	400 IOPS	430 IOPS	– 7.0%
32	399 IOPS	431 IOPS	– 7.5%

 

512 KB Sequential Write

Outstanding I/Os	WD Gold (8 TB)	WD Black (6 TB)	Difference
1	398 IOPS	436 IOPS	– 8.5%
8	395 IOPS	430 IOPS	– 8.2%
32	399 IOPS	435 IOPS	– 8.4%

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