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What's the difference between a $50 HDD and a $200 HDD? (lemmy.world)

submitted 2 months ago by gedaliyah@lemmy.world to c/selfhosted@lemmy.world

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Beginner question: Searching for my first dedicated server setup, and I have no idea what to look for in a hard drive. I see a huge difference between drives of the same capacity, so what makes the difference? I am looking to eventually have a media server that can run "-arr" programs, Jellyfin, Immich, sync music, books, etc.

What are the factors I should be paying attention to other than capacity? Is it a lot of branding and smoke and mirrors, or will I see a significant change in performance/reliability with different drives?

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[–] Enkers@sh.itjust.works 3 points 2 months ago (1 children)

Backblaze regularly releases failure rate statistics of their drives, and it's often a big enough dataset to be quite meaningful. I haven't been keeping up with it lately, but there certainly was a period of time where there were substantial differences in the failure rates of different manufacturers.

So while you do still need to have drive failure mitigation strategies, buying more reliable devices can definitely save you time and headache in the future by having to deal with failures less frequently.

[–] lemmyvore@feddit.nl 2 points 2 months ago (1 children)

It's impossible to tell how meaningful Backblaze's numbers are because we don't know the global failure rate for each model they test, so we can't calculate the statistical significance. Also there are other factors involved like the age of the drives and the type of workload they were used for.

buying more reliable devices can definitely save you time and headache in the future by having to deal with failures less frequently.

That's a recipe for sorrow. Don't waste time on "reliability" research, just plan for failure. All HDDs fail. Assume they will and backup or replicate your data.

[–] atzanteol@sh.itjust.works 1 points 2 months ago

All SSDs will die too. Not saying you meant or implied that they wouldn't, just clarifying for anyone who may not be aware. You're spot on with "plan for failure".