Can you really figure out hard disk geometry just by testing it?
I came across something interesting about using microbenchmarking to reverse-engineer how hard drives actually work internally. The idea is that by running carefully designed performance tests, you can uncover the physical layout and geometry of a disk—things like sector arrangement, track spacing, and head positioning—without ever opening it up.
It's a pretty clever technique, but I'm curious how practical it really is for most people. Are there situations where understanding a disk's actual geometry matters? I imagine it could be useful for data recovery specialists or storage engineers, but does it have applications for everyday users trying to optimize performance or troubleshoot issues?
Also, does this work equally well on modern solid-state drives, or is it more of a legacy hard disk thing? And what about the time investment—how long would these benchmarks actually take to run?
Anyone here experimented with this kind of low-level testing? Would love to hear about your experience and whether you found it revealing or just academically interesting.
Reference: hackernewsComments (4)
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- Marcus T.21d ago
This is really neat from an educational standpoint, but I wonder if SSDs have made this knowledge less relevant. Are there real-world performance gains from understanding old HDD geometry?
This is really neat from an educational standpoint, but I wonder if SSDs have made this knowledge less relevant. Are there real-world performance gains from understanding old HDD geometry? - Sarah K.21d ago
I work in data recovery and this kind of detailed disk analysis is actually essential. Helped us recover files from a damaged drive where standard tools failed. Definitely not just theoretical stuff.
I work in data recovery and this kind of detailed disk analysis is actually essential. Helped us recover files from a damaged drive where standard tools failed. Definitely not just theoretical stuff. - David P.21d ago
Has anyone actually tried running these benchmarks on their own hardware? Curious about the setup complexity and how long it takes to get meaningful results.
Has anyone actually tried running these benchmarks on their own hardware? Curious about the setup complexity and how long it takes to get meaningful results. - Elena R.21d ago
The intersection of hardware engineering and software testing fascinates me. This feels like detective work applied to storage. Makes me want to learn more about how disk controllers actually work.
The intersection of hardware engineering and software testing fascinates me. This feels like detective work applied to storage. Makes me want to learn more about how disk controllers actually work.