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What is a Permanent storage in PC ?
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Permanent storage in a PC refers to non-volatile memory devices that store data continuously, even when the computer is turned off. Unlike RAM, which acts as short-term memory and clears every time you shut down or restart your computer, permanent storage retains your files, operating system, installed software, and personal data indefinitely until you manually delete or overwrite them.
Types of Permanent Storage Devices
Over the years, primary storage technology in PCs has evolved significantly, but the underlying goal remains keeping your data safe for long-term access.
- Solid State Drives (SSDs): Modern PCs primarily rely on SSDs, especially NVMe and SATA drives. SSDs use flash memory chips with no moving parts, making them extremely fast, energy-efficient, and durable against physical shock.
- Hard Disk Drives (HDDs): Traditional hard drives use magnetic platters and a moving read/write head. While significantly slower than SSDs, HDDs are still widely used for bulk data archiving due to their lower cost per gigabyte.
- Optical Media & Flash Drives: External options like USB flash drives, memory cards, and optical discs also fall under non-volatile storage, often used for backups or file transfers.
Why is Permanent Storage Essential?
Without permanent storage, your PC wouldn't be able to boot up. The operating system must reside on non-volatile media so the hardware knows how to load system files during startup. Additionally, all user applications, saved games, documents, and media depend on permanent storage for retrieval across sessions.
Permanent Storage vs. Temporary Storage
To put it simply, temporary storage (Random Access Memory) prioritizes speed for actively running tasks, allowing the processor to fetch active instructions almost instantly. Permanent storage prioritizes retention capacity and stability, preserving data reliably for years.
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A storage device in Computer System that stores, and extract data files and objects regardless of power off of the computer is known as “Hard Drive” or “Hard Disk”. Hard Drive usually has a large storage capacity and stores the data permanently until it is deleted manually. Once a data or file is saved in Hard Disk then power off of computer system also doesn’t remove the file until is done by self. Hard Drives are Non-Volatile in nature. There two types of Permanent Storage Device i.e. Internal Storage Device (Hard Disk) and External Storage Device.
External Storage Device is of various types:
a) Blue-Ray Disk,
b) Flash Memory (USB Flash Drives, Pen Drive),
d) Floppy Diskette (Now, not in use),
e) Memory Card,
f) DVD-R, DVD+R, DVD-RW, DVD+RW Disk,
g) SSD Card,
h) Magnetic Tapes (Now, not in use)
Storage Devices are one of the most important components of a Computer System. A Storage Device is also named as Storage Media or Storage Medium.
The concept of Virtual Memory has been used by most of the Computer Operating Systems. It allows utilization of more primary memory capacity that the memory is physically available in the system.