Disks

Hard disk drive

A hard disk drive (HDD) is an electro-mechanical data storage device that uses magnetic storage to store and retrieve digital data. It consists of rapidly rotating platters coated with magnetic material, paired with magnetic heads that read and write data. HDDs have been the dominant secondary storage device for computers since the 1960s, but they are being replaced by solid-state drives (SSDs) in applications where speed, power consumption, small size, high capacity, and durability are important.

2 courses cover this concept

CS 186 Introduction to Database Systems

UC Berkeley

Spring 2023

This project-heavy course covers access methods, data models, query languages, database services, and interfaces. It introduces transaction processing and requires CS 61A, CS 61B, and CS 61C as prerequisites/corequisites. It suggests proficiency in Java for project work.

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CS 112, CS212: Operating Systems

Stanford University

Winter 2023

This course introduces students to operating system concepts, with a primary focus on Unix, and covers key systems concepts in general. It prepares students to deal with larger software systems with programming assignments that are bigger than in many other courses. Topics covered include threads & processes, concurrency & synchronization, scheduling, virtual memory, I/O, disks, file systems, protection & security, and virtual machines.

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