Nov 30, 2023 · Fundamentals

Understanding the Four Levels of Computer Storage and Their Roles

This article explains the four main categories of computer storage—Level 1 (directly attached memory), Level 2 (I/O‑connected drives like HDDs and SSDs), Level 3 (large removable media such as tape), and offline storage (manual devices like optical discs and USB drives)—and clarifies how Direct‑Attached Storage (DAS) and RAID technologies fit into this hierarchy.

DASHardwareMemory Hierarchy

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Understanding the Four Levels of Computer Storage and Their Roles

Architects' Tech Alliance

Oct 26, 2023 · Fundamentals

Types of Computer Storage and an Overview of RAID

The article explains the four main categories of computer storage—primary, secondary, tertiary, and offline—detailing their connection to the CPU, typical devices, the concept of direct‑attached storage, and an overview of RAID technology for performance and redundancy.

Direct-Attached StorageRAIDStorage Hierarchy

0 likes · 5 min read

Types of Computer Storage and an Overview of RAID