What is secondary storage? Why is it needed?
Share
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
What is secondary storage? Why is it needed?
Secondary storage, also known as secondary memory or auxiliary storage, refers to non-volatile storage devices used to store data and programs that are not currently being used by the computer's CPU. Unlike primary storage (RAM), which is volatile and loses its contents when the power is turned off, secondary storage retains its data even when the power is off.
Need for Secondary Storage:
Persistence: Secondary storage provides a means to store data and programs permanently. This is essential for saving files, applications, and operating systems even when the computer is turned off.
Capacity: Secondary storage devices typically offer much larger storage capacities compared to primary storage. This allows users to store large amounts of data, such as documents, photos, videos, and applications.
Cost-effectiveness: Secondary storage is generally more cost-effective per unit of storage compared to primary storage like RAM. This makes it ideal for storing large volumes of data economically.
Long-term Storage: Secondary storage is used for long-term storage of data that is not frequently accessed. This helps free up space in primary storage for data and programs that are actively being used.
Backup and Recovery: Secondary storage is often used for backup and recovery purposes. It allows users to create copies of important data and restore them in case of data loss or system failure.
Portability: Secondary storage devices such as external hard drives, USB flash drives, and memory cards are portable and can be easily transported between different computers, making data sharing and transfer convenient.
Data Sharing: Secondary storage enables data sharing between different computers and devices. For example, a USB flash drive can be used to transfer files between a computer and a printer, or between different computers.
In summary, secondary storage is essential for providing permanent storage for data and programs, offering larger storage capacities, cost-effectiveness, long-term storage, backup and recovery capabilities, portability, and data sharing. It complements primary storage by providing a reliable and efficient means of storing data and programs for future use.