# Re: Intel SSD or other brands

- From: Peter Grandi \<hidden\>
- Date: 2016-12-29 11:39:47 
- List: linux-raid
- Page: https://ratatoskr.run/linux-raid/2016/12/6634028
- Thread: https://ratatoskr.run/linux-raid/2016/12/6634026/t.md

```text
> [ ... ] I now found out that performance of a 520s SSD is
> around 180 times faster than a 530s SSD. [ ... ]

Well "performance" can be roughly the same, even if "speed" can
be very different.

http://www.sabi.co.uk/blog/15-two.html#151023

> 520s: 70MB/s
> 530s: 0.4MB/s
....
> fio --filename=/dev/sdb --direct=1 --sync=1 --rw=write --bs=4k 
>  --iodepth=1 --runtime=60 --time_based --group_reporting 
>  --name=IntelDC3510_4kj1 --numjobs=1

Arguably the 520s actually have no performance.

https://www.sebastien-han.fr/blog/2014/10/10/ceph-how-to-test-if-your-ssd-is-suitable-as-a-journal-device/
```