TEST
YOUR USB

ST4000DM (ExtHD)

000-2AE166 4TB

▲ 500 ▼

Release date ≈ Q1 2017.

Average Bench: 43.6% (32nd of 639)

Based on 25 user benchmarks.  Device: VID 18a5 PID 0400 Model: ST4000DM 000-2AE166
Poor: 13%Average: 43.6% Great: 74%

Below average average bench

The ST4000DM 000-2AE166 4TB averaged 56.4% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.

Strengths

Avg. 4K Random Write Speed 1.91MB/s
Avg. Sustained Write Speed 103MB/s

Poor consistency

The range of scores (95th - 5th percentile) for the ST4000DM 000-2AE166 4TB is 61.3%. This is a particularly wide range which indicates that the ST4000DM 000-2AE166 4TB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 0.63MB/s
Avg. 4K Random Mixed IO Speed 0.63MB/s
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Average Bench

(Based on 25 samples)
Rank 3243.6%
Min Avg Max
20 Read 110 186
17.2 Write 93.8 163
9.5 Mixed 66.1 131
8.1 SusWrite 103 185
124% 93.1 MB/s
Min Avg Max
0.1 4K Read 0.63 0.8
1.3 4K Write 1.91 2.3
0.1 4K Mixed 0.63 0.9
88.7% 1.06 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
3.5TB free, PID 0400
Operating at USB 3.0 Speed
SusWrite @10s intervals: 180 185 187 186 186 187 MB/s
73.9% Very good
Read 183
Write 146
Mixed 79.1
SusWrite 185
195% 148 MB/s
4K Read 0.8
4K Write 2.2
4K Mixed 0.8
105% 1.27 MB/s
3.5TB free, PID 0400
Operating at USB 3.0 Speed
SusWrite @10s intervals: 181 185 187 187 186 183 MB/s
73.1% Very good
Read 178
Write 155
Mixed 77
SusWrite 185
197% 149 MB/s
4K Read 0.7
4K Write 2.2
4K Mixed 0.8
105% 1.23 MB/s
2.5TB free, PID 0400
Operating at USB 3.0 Speed
SusWrite @10s intervals: 168 170 168 177 174 181 MB/s
70.5% Very good
Read 180
Write 143
Mixed 75
SusWrite 173
187% 143 MB/s
4K Read 0.7
4K Write 2.1
4K Mixed 0.8
101% 1.2 MB/s
259GB free, PID 0400
Operating at USB 3.0 Speed
SusWrite @10s intervals: 90 97 97 97 96 97 MB/s
39.1% Below average
Read 92.6
Write 70.5
Mixed 62.1
SusWrite 95.8
107% 80.2 MB/s
4K Read 0.7
4K Write 1.5
4K Mixed 0.7
77% 0.97 MB/s
25 MORE »
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