Set 11 — Storage Devices (HDD, SSD, Form Factors)

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12 Terms

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HDD

Mechanical drive with spinning platters, cheap, high capacity, slower

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SSD

Flash memory storage, no moving parts, much faster, more durable

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HDD common RPM speeds

5400, 7200, 10000, 15000 RPM

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2.5" drive

Common laptop drive size

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3.5" drive

Common desktop drive size

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M.2

Small internal slot/form factor, can hold SATA or NVMe SSDs

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NVMe

Protocol that runs SSDs over PCIe lanes - much faster than SATA SSDs

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SATA SSD

Flash storage limited by the slower SATA interface speed

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SSHD

Hybrid drive - combines HDD storage with a small SSD cache

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Optical media

CD, DVD, Blu-ray - laser-read removable discs

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Removable storage

USB flash drives, SD cards, external drives

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Why SSD is faster than HDD

No physical moving parts / no seek time to locate data