TEST
YOUR USB

Hitachi (ExtHD)

HDS722020ALA330 2TB

▲ 500 ▼

Release date ≈ Q1 2015.

Average Bench: 26% (145th of 639)

Based on 27 user benchmarks.  Device: VID 174c PID 55aa Model: Hitachi HDS722020ALA330
Poor: 8%Average: 26% Great: 46%

Very poor average bench

The Hitachi HDS722020ALA330 2TB averaged 73.9% 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 1.23MB/s
Avg. Sequential Write Speed 65.7MB/s

Above average consistency

The range of scores (95th - 5th percentile) for the Hitachi HDS722020ALA330 2TB is 38.4%. This is a relatively wide range which indicates that the Hitachi HDS722020ALA330 2TB performs inconsistently under varying real world conditions.

Weaknesses

Avg. 4K Random Read Speed 0.65MB/s
Avg. Sequential Read Speed 66.9MB/s
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Average Bench

(Based on 27 samples)
Rank 14526%
Min Avg Max
15 Read 66.9 121
13.5 Write 65.7 117
9.8 Mixed 39.7 105
1.6 SusWrite 34.6 108
67.4% 51.7 MB/s
Min Avg Max
0.17 4K Read 0.65 0.8
0.7 4K Write 1.23 1.51
0.14 4K Mixed 0.55 0.9
62.8% 0.81 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest USB (mainstream) averages a speed of 100%
1TB free, PID 55aa
Operating at USB 3.0 Speed
SusWrite @10s intervals: 110 106 105 107 110 107 MB/s
44% Average
Read 111
Write 112
Mixed 54.3
SusWrite 108
129% 96.3 MB/s
4K Read 0.8
4K Write 1.4
4K Mixed 0.9
81% 1.03 MB/s
220GB free, PID 55aa
Operating at USB 3.0 Speed
SusWrite @10s intervals: 99 103 104 103 105 101 MB/s
41.6% Average
Read 102
Write 115
Mixed 57.7
SusWrite 102
128% 94.2 MB/s
4K Read 0.8
4K Write 1.4
4K Mixed 0.8
78% 1 MB/s
1.5TB free, PID 55aa
Operating at USB 3.0 Speed
SusWrite @10s intervals: 71 76 84 84 88 88 MB/s
34.7% Below average
Read 92.5
Write 101
Mixed 52.2
SusWrite 81.7
110% 81.9 MB/s
4K Read 0.6
4K Write 1.1
4K Mixed 0.6
60% 0.77 MB/s
140GB free, PID 55aa
Operating at USB 3.0 Speed
SusWrite @10s intervals: 48 42 49 44 47 43 MB/s
25.6% Poor
Read 79.5
Write 54
Mixed 48.7
SusWrite 45.3
73% 56.9 MB/s
4K Read 0.7
4K Write 1.3
4K Mixed 0.8
74% 0.93 MB/s
527GB free, PID 55aa
Operating at USB 2.1 Speed
SusWrite @10s intervals: 31 33 31 33 32 33 MB/s
16% Very poor
Read 37.9
Write 31.1
Mixed 23.8
SusWrite 32.1
41% 31.2 MB/s
4K Read 0.5
4K Write 1.1
4K Mixed 0.7
63% 0.77 MB/s
1TB free, PID 55aa
Operating at USB 2.1 Speed
SusWrite @10s intervals: 27 27 27 28 28 28 MB/s
14.5% Very poor
Read 32.3
Write 26.5
Mixed 27.3
SusWrite 27.4
38% 28.4 MB/s
4K Read 0.7
4K Write 1.2
4K Mixed 0.7
67% 0.87 MB/s
1.5TB free, PID 55aa
Operating at USB 2.1 Speed
SusWrite @10s intervals: 10 10 10 9.3 9.5 9.2 MB/s
10.5% Very poor
Read 27
Write 20.3
Mixed 21
SusWrite 9.7
25% 19.5 MB/s
4K Read 0.6
4K Write 1.4
4K Mixed 0.6
70% 0.87 MB/s
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