Hard drive history question.

medwardl

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Jan 4, 2009
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I'm curious does anyone still know why hard drive manufacturers stopped making 5.25in hard drives? Also lets say I have 3.5in 2TB hard drive using 4 platters assuming everything else is the same how much would the same hard drive hold if it was 5.25 form factor?
 

DeathWalking

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Sep 29, 2006
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2TB across 4 platters => .5 TB per platter
Area of one 3.5" platter => 38.48 in^2
Areal density => 0.01299224 TB/in^2

Area of one 5.25" platter => 86.59 in^2
Storage capacity per platter => 1.125 TB
HDD capacity => 4.5 TB
 
'Cos the worlds getting smaller.
They save more material as the platters get denser and denser. Plus the form factor is more towards cramping more HDDs into a single container for easier transport and bigger volume. Small is beautiful, economical, etc etc... the reasons are too many.