Wednesday, March 28, 2018

linux - SSD: NTFS vs EXT4


Always when I read about SSD usage under Linux, the advice is to disable journalling in Ext4 (or use Ext2), since it's too bad for your SSD. But in all articles about SSD tweaks for Windows, I never see any mentions that you should disable NTFS journalling, or that you should stick to FAT32.


I know Ext4's journaling is more advanced, but is it so much more damaging to a SSD than that of NTFS? Or are Linux users just a little bit more cautious?


Answer



You can't disable journaling on NTFS.


That being said, the benefits are dubious these days. While writes are limited, the myths of write endurance existed from the first generation of SSDs that appeared in the enterprise market. I find it hard to believe that the same is still true ten years later.


For example, Corsair's blog posted this test.


http://www.corsair.com/blog/force-series-ssd-life-testing/


So one forum member decided to stomp the myth.


The user decided to take three files, copy it a whole bunch, then delete it.


It took 240 TiB of data written to the drive to finally kill it. And mind you, this is on a 40 GB Corsair with a SandForce controller.


The math is easy. If you wrote 20GiB of data a day, it would take you over 30 years to hit that number.


The rest of the blog post gets more detailed and it graphs the SMART data. I'll be glad when the day people stop this one to death. Like the whole "Moon landings were fake" BS. . .


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