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1 Benchmark:Seagate Backup Plus 5TB
2 =================================
3
4 I have been playing around with the idea recently of decomissioning my big
5 server in favor of a rather powerful Raspberry Pi (8GB ram, 4 core CPU). The
6 big server has a sizeable RAID with pretty impressive IO performance (~400 MB/s
7 write speed). The big concern though is storage capacity, as that server
8 backups up a number of devices passively, which doesn't really require high IO.
9 With that in mind, I purchased a Seagate Backup Plus 5TB drive at my local
10 store to see how it performs as a replacement, or at least as a backup system.
11
12
13 TL;DR
14 -----
15
16 The quick summary for those who don't care to read all the metrics, over a USB
17 3 port, the drive maxed out at 144 MB/s sequential write and 144 MB/s
18 sequential read, without a filesystem.
19
20
21 **NOTE**: This benchmark was performed using a tool I wrote in bash called
22 `dd-bench </src/nullspoon/dd-bench.git>`_. It's open source (GPLv3), so please
23 feel free to use it and send feedback and pull requests to nullspoon@oper.io.
24
25 .. image:: files/seagate-backup-plus-5tb.png
26 :height: 450
27 :align: center
28
29 ::
30
31 Benchmark started at Sat Nov 28 21:52:18 MST 2020
32
33
34 1 KB Block Size
35 ---------------
36
37 ::
38
39 Nov 28 21:52:18: *** Testing 1 KB blocks
40 Nov 28 21:52:21: Wrote 1K 10240 times. 10 MB written at 3.2 MB/s.
41 Nov 28 21:52:24: Read 1K 10240 times. 10 MB read at 3.3 MB/s.
42 Nov 28 21:52:29: Wrote 1K 20480 times. 21 MB written at 4.8 MB/s.
43 Nov 28 21:52:32: Read 1K 20480 times. 21 MB read at 6.0 MB/s.
44
45
46 1 MB Block Size
47 ---------------
48
49 ::
50
51 Nov 28 21:52:32: *** Testing 1 MB blocks
52 Nov 28 21:52:40: Wrote 1M 1024 times. 1.1 GB written at 143 MB/s.
53 Nov 28 21:52:48: Read 1M 1024 times. 1.1 GB read at 129 MB/s.
54 Nov 28 21:53:48: Wrote 1M 8192 times. 8.6 GB written at 144 MB/s.
55 Nov 28 21:54:48: Read 1M 8192 times. 8.6 GB read at 143 MB/s.
56
57
58 4 MB Block Size
59 ---------------
60
61 ::
62
63 Nov 28 21:54:48: *** Testing 4 MB blocks
64 Nov 28 21:54:56: Wrote 4M 256 times. 1.1 GB written at 141 MB/s.
65 Nov 28 21:55:05: Read 4M 256 times. 1.1 GB read at 126 MB/s.
66 Nov 28 21:56:04: Wrote 4M 2048 times. 8.6 GB written at 144 MB/s.
67 Nov 28 21:57:05: Read 4M 2048 times. 8.6 GB read at 143 MB/s.
68 Nov 28 21:59:35: Wrote 4M 5120 times. 21 GB written at 143 MB/s.
69 Nov 28 22:02:05: Read 4M 5120 times. 21 GB read at 144 MB/s.
70
71
72 1 GB Block Size
73 ---------------
74
75 ::
76
77 Nov 28 22:02:05: *** Testing 1 GB blocks
78 Nov 28 22:02:13: Wrote 1G 1 times. 1.1 GB written at 138 MB/s.
79 Nov 28 22:02:21: Read 1G 1 times. 1.1 GB read at 126 MB/s.
80 Nov 28 22:03:22: Wrote 1G 8 times. 8.6 GB written at 141 MB/s.
81 Nov 28 22:04:23: Read 1G 8 times. 8.6 GB read at 141 MB/s.
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