this post was submitted on 14 Dec 2025
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And most are wrong or unnecessary. What movie requires SSD performance?
HDDs have horrible random access times, so if you need to process or just copy a lot of small files, say photos, there's a significant penalty.
Ok, but what are they doing that moves loads of random files?
Rsync, syncthing, backups, mp3s, photos, json files; idk, a lot of tasks involve large amounts of small files. I personally ran into this problem training models on millions of photos. My GPUs would only get up to 25% utilization with mirrored HDDs, so I had to switch to SSDs.
Edit: the difference is also significant when compiling large projects or just using git. I imagine some game servers need a lot of random accesses too.
Why are you doing that on a network storage as opposed to on device?
Also who got millions of photos at home?
Not enough room in the GPU machine for all the HDDs I needed.
People working on biological datasets.