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DVD-like optical disc could store 1.6 petabits (or 200 terabytes) on 100 layers (www.techspot.com)

submitted 8 months ago by Wilshire@lemmy.world to c/technology@lemmy.world

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[–] GermainRobitaille@lemmy.world 6 points 8 months ago (1 children)

With a rate 1/2 you can't expect to correct more than 5.5% of errors.

[–] Godort@lemm.ee 11 points 8 months ago (1 children)

I am unfamiliar with the math used to calculate that value.

Would it not work like a parity RAID where each sector would have parity bits in a different location on the disc?

[–] foggy@lemmy.world 1 points 8 months ago

I'm not familiar with it either, but I'd say that using RAID on a single disc is silly... There's a good reason it's not a common practice on single HDDs.

A scratch on the disc usually means many scratches on the disc.