Persistent storage refers to any data storage system that retains data even after the power is turned off. This type of storage is also known as non-volatile storage. Persistent storage is crucial for applications that require data to be saved and retrieved reliably, such as databases, cloud storage, and containerized applications.
Types of Persistent Storage
There are several types of persistent storage, each with its unique characteristics and use cases:
Hard Disk Drives (HDDs): These are electro-mechanical devices that store data on spinning disks using magnetic heads. They are commonly used for large-scale data storage due to their cost-effectiveness.
Solid-State Drives (SSDs): These use integrated circuits to store data and have no moving parts, making them faster and more reliable than HDDs.
Network-Attached Storage (NAS): This is a group of HDDs or SSDs connected through a local network, providing centralized data storage accessible by multiple devices.
Storage Area Networks (SANs): These are high-speed networked storage devices that appear as local storage to the operating system.
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