10TB WD Red (WD100EFAX) Hard Disk Drive Review

Page 7 : IO Meter Sequential Access Performance

IO Meter (Sequential Access)

We compared the 10 TB WD Red (WD100EFAX) NAS drive to the 6 TB WD RedFor more performance comparisons, please take a look at The Hard Disk Drive Performance Comparison Guide.

 

Sequential Throughput

Test  WD Red
(10 TB) 
 WD Red
(6 TB) 
Difference
512 KB Read 215.25 MB/s 172.71 MB/s + 24.6%
512 KB Write 215.45 MB/s 173.09 MB/s + 24.5%
4 KB Read 84.70 MB/s 51.64 MB/s + 64.0%
4 KB Write 71.53 MB/s 50.09 MB/s + 42.8%

This is the most important test for the NAS drives because it shows their ability to read and write files sequentially. The large sequential transfer performance is particularly important since many NAS system deal with large files (larger than 512 KB in this context).

Without a doubt, the 10 TB WD Red (WD100EFAX) is much faster than the 6 TB WD Red in all aspects. The biggest boost was in small sequential reads.

 

Sequential Access Time

Test  WD Red
(10 TB) 
 WD Red
(6 TB) 
Difference
512 KB Read 2.43 ms 3.03 ms – 19.8%
512 KB Write 2.43 ms 3.03 ms – 19.7%
4 KB Read 0.05 ms 0.08 ms – 39.2%
4 KB Write 0.06 ms 0.08 ms – 30.0%
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Sequential CPU Utilisation

Test  WD Red
(10 TB) 
 WD Red
(6 TB) 
Difference
512 KB Read 29.84 % 0.96 % + 3008%
512 KB Write 29.49 % 1.14 % + 2487%
4 KB Read 35.77 % 8.52 % + 319.8%
4 KB Write 35.17 % 9.15 % + 284.4%

Even in sequential accesses, the 10 TB WD Red (WD100EFAX) took up an excessive amount of CPU utilisation. Again, this is not a problem for NAS systems, but will be an issue for those who choose to use this drive in their desktop systems.

Next Page > IOPS Scaling (Random) Performance

 

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