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WDWD4003FZEX
HGST0S03664
▲ 507 ▼

Release date ≤ Q1 2014.

VS
▲ 53610 ▼

Release date: Q4 2013.

Effective Speed 
+9%
Real World Speed
Performance profile from 28,191 user samples
Benchmark your HDD here
20,205 User Benchmarks
Best Bench: 98% 3.5TB free
Worst Bench: 58% 3TB free
Poor: 58% Great: 98%
SPEED RANK: 81st / 1015
7,986 User Benchmarks
Best Bench: 92% 3.5TB free
Worst Bench: 47% 2.5TB free
Poor: 47% Great: 92%
SPEED RANK: 115th / 1015
Effective Speed
Effective HDD Speed 		79.5 % Slightly faster effective speed.
+9% 		73 %
Average Score 
+38%
Read
Avg. Sequential Read Speed 		142 MB/s Faster read speed.
+14% 		125 MB/s
Write
Avg. Sequential Write Speed 		132 MB/s +3% 128 MB/s
4K Read
Avg. 4K Random Read Speed 		0.89 MB/s 1.01 MB/s Faster random read.
+13%
4K Write
Avg. 4K Random Write Speed 		2.97 MB/s Much faster random write.
+47% 		2.02 MB/s
Mixed
Avg. Sequential Mixed IO Speed 		86.1 MB/s Hugely faster mixed IO speed.
+172% 		31.6 MB/s
4K Mixed
Avg. 4K Random Mixed IO Speed 		1 MB/s Much faster random mixed IO.
+41% 		0.71 MB/s
SusWrite
Avg. Sustained Write Speed 		134 MB/s +4% 129 MB/s
Peak Score 
+28%
Read
Peak Sequential Read Speed 		181 MB/s Faster peak read speed.
+12% 		161 MB/s
Write
Peak Sequential Write Speed 		163 MB/s +2% 160 MB/s
4K Read
Peak 4K Random Read Speed 		1.1 MB/s 1.2 MB/s Slightly faster peak random read.
+9%
4K Write
Peak 4K Random Write Speed 		3.5 MB/s Much faster peak random write.
+52% 		2.3 MB/s
Mixed
Peak Sequential Mixed IO Speed 		109 MB/s Hugely faster peak mixed IO speed.
+100% 		54.6 MB/s
4K Mixed
Peak 4K Random Mixed IO Speed 		1.1 MB/s Much faster peak random mixed IO.
+38% 		0.8 MB/s
SusWrite
Peak Sequential Sustained Write 60s Average 		166 MB/s +3% 161 MB/s
Value & Sentiment 
+1%
Market Share
Based on 53,961,845 HDDs tested
See market share leaders
Market Share
Market Share (trailing 30 days) 		0.05 % Higher market share.
+25% 		0.04 %
Value
Value For Money 		36.3 % 39.2 % Slightly better value.
+8%
User Rating
UBM User Rating 		50 % 53 % Slightly more popular.
+6%
Price
Price (score) 		$175 $149 Cheaper.
+15%
Nice To Haves 
+1%
Age
Newest 		130+ Months +1% 131 Months
Specifications 
Capacity
Capacity 		4TB 4TB
Conclusion 
Average Bench 79.5%
Average Bench 73%

The HGST Deskstar NAS is one of the few NAS drives to feature a 7,200 RPM rotational speed. This relatively high rotational speed helps the 4TB Deskstar NAS achieve a 4k read/write speed of 1.14/2.2 MB/s. 1.14 MB/s is actually the highest 4K read speed I have seen to date on a 4TB drive. In terms of sequential read/write speeds the Deskstar NAS clocked in at 161/144 MB/s which are also a reasonable set of scores. Overall the Deskstar NAS scored an effective speed of 116 MB/s which despite being 14% below the group leaders, is still second place for a 4TB capacity drive. With 4TB of capacity and an above average performance profile the HGST Deskstar NAS represents very good value for money. [Mar '14 HDrivePro]

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We calculate effective speed which measures performance for typical consumers. Effective speed is adjusted by current cost per GB to yield value for money. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top HDDs. [HDrivePro]

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