Storage Types for Tech+

Various storage types can be compared by volatility, access speed, and purpose: - Volatile vs Non-volatile: Volatile storage (RAM) loses data when power is off. Non-volatile storage (HDD, SSD) retains data. - Local storage: - RAM: Volatile; very fast; working memory for running programs. - ROM: Non-volatile; stores firmware; not writable under normal operation. - HDD: Magnetic disks with moving parts. High capacity, moderate speed. - SSD: Flash memory, no moving parts. Much faster than HDD. NVMe SSDs use PCIe for very high speed. - Optical Discs: DVD, Blu-ray. Removable media, slower access.

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3 lessons in this topic

Volatile vs non-volatile (e.g., RAM vs storage drive)

Understand: Volatile vs non-volatile (e.g., RAM vs storage drive)

Local storage: RAM, ROM, storage drives (HDD/SSD/NVMe), optical discs, flash drives

Understand: Local storage: RAM, ROM, storage drives (HDD/SSD/NVMe), optical discs, flash drives

Network storage: NAS, file servers, cloud storage

Understand: Network storage: NAS, file servers, cloud storage

Common mistakes to avoid

Jumping into advanced certification depth instead of staying at Tech+ recognition level.

Choosing a related term without checking the exact device, service, or user need in the scenario.

Memorizing isolated definitions without connecting them to simple workplace examples.