Question

Describe need of secondary storage systems. Contrast secondary storage with
primary memory on parameters of volatility, latency, cost per unit of storage, and
capacity constraints. 

31 Jul 2026
Answer :
Word Count : 575
Secondary storage systems are essential components of computer systems because they provide permanent storage for data and programs. While the Central Processing Unit (CPU) and primary memory are responsible for executing instructions and temporarily holding data, they cannot retain information once the power is switched off. Secondary storage ensures that operating systems, application software, user documents, multimedia files, databases, and backups remain available even after the computer is shut down. Without secondary storage, users would need to reinstall software and recreate data every time the system restarted, making practical computing impossible. One of the primary needs for secondary storage is long-term data preservation. Individuals and organizations generate enormous amounts of information that must be stored securely for future use. Documents, financial records, research data, photographs, videos, and business transactions require reliable storage that remains intact over time. Secondary storage devices such as Hard Disk Drives (HDDs), Solid State Drives (SSDs), optical discs, USB flash drives,
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