What is data storage?
Data storage refers to the task of keeping or archiving digital data on different kinds of media for use by computers and other devices.
What are the types of data storage media?
Main types of storage media include hard disk drives (HDDs), solid-state disks (SSDs), optical storage and tape. HDDs read and write data to spinning discs coated in magnetic media. SSDs store data on nonvolatile flash memory chips and have no moving parts. Optical data storage uses lasers to store and retrieve data from optical media, typically a spinning optical disc. Tape storage records data on magnetic tape.
What are primary and secondary data storage?
Primary data storage is used to store data that is highly important and/or frequently accessed and requires faster responses. Secondary storage is used to archive less important or inactive data that must be kept for operational or historical purposes.
What is flash vs. hybrid storage?
Flash storage is essentially synonymous with solid-state disks and provides some of the fastest response times in the storage industry. Because flash also tends to be more costly, companies may use a hybrid storage solution that combines fast flash storage with more economical forms (but less responsive) forms of storage media, storing data on one media or the other based on its value and criticality.
What is network storage vs. object storage?
Network-attached storage is a data storage device that can be accessed by users via a local area network. Network storage is typically a file storage device, where data is stored hierarchically using files and folders much like paper is organized in a filing cabinet. Object storage is a data storage system where data is stored as objects in a flat structure, with attached metadata that describes it, and a unique identifier that allows it to be found among a highly distributed array of storage devices.
What is tiered storage?
Tiered storage is an approach to data storage that balances cost and performance by using high-performance media for data that is frequently accessed, and less expensive media for data that does not need to be accessed as frequently or as quickly.