Old Samsung PB22-JS3 rejuvenated

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New member
Sep 17, 2020
Just wanted to share my findings of a drive that haven't been written to in several years.

First run:
Driv Size  Drive Identity     Location:    0      25%     50%     75%     100
---- ----- ---------------------------- ------- ------- ------- ------- -------
 81  128GB SAMSUNG SSD PB22-JS3 2.5"     126.6    65.4    52.5    84.0    62.2

                  Benchmarked: Friday, 2021-01-08 at 10:28

The drive don't support TRIM, at least that's what blkdiscard told me, so I instead wrote random data to the entire drive:
# dd if=/dev/urandom of=/dev/sda bs=1M
(write speed was very consistent at about 54.7 MB/s, which is probably due to urandom not being faster)

Second run:
Driv Size  Drive Identity     Location:    0      25%     50%     75%     100
---- ----- ---------------------------- ------- ------- ------- ------- -------
 81  128GB SAMSUNG SSD PB22-JS3 2.5"     230.7   229.5   230.7   230.3   229.0

                  Benchmarked: Friday, 2021-01-08 at 10:53

Last edited:
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Reactions: rfrazier
Hi, welcome to the forums, and thanks for posting!

Interesting results! I guess that you're doing the equivalent of a Spinrite level 3 pass, except that your version is destructive of data? It's useful to see that it has similar results to level 3 in terms of refreshing the read speeds?