What is the rpm of hard disk. Disk made up of which material.
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Revolutions per minute (RPM) is a measurement of how many times the disc spins within one minute.
Hard drive platters are typically made from aluminum (desktop computers) or glass (laptop computers). They also have a ceramic substrate, which prevents cracking due to changes in temperature.
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platters are mainly made of materials such as aluminum,glass or ceramic substrate.
hard drivers have been engineered with spin rates as low as 1200rpm and as high as 15 k rpm.
Laptops desktops pc are between 5400 to 7200 rpm
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