In that respect, nearline storage works in a similar manner as an active archive.
The data in nearline storage is kept on a secondary or tertiary tier. Examples of removable nearline storage mediaĪs the term implies, nearline storage is a midpoint between fast storage and archiving. Archival storage retains cold backup - sometimes called offline backup - data on disk-based appliances or cloud storage.īy definition, online storage refers to electromechanical magnetic disks that need to remain continuously available to support ongoing business operations, while access to an archived backup copy typically requires some human intervention.Īs solid-state storage moves into the mainstream, some industry experts believe that nearline storage represents one of the last significant growth areas for legacy hard disk drive ( HDD) vendors. Online storage provides rapid access to frequently used data, often to a larger number of users simultaneously. Nearline storage relies primarily on inexpensive disk storage to accomplish this. Although it is accessed only frequently, the data needs to be available to users on demand. As such, it straddles online storage and long-term archiving. Comparing nearline storage, always-on storage and archival storageĭata housed on nearline storage does not require the high availability or redundancy of primary storage. Nearline storage products encompass magnetic disk, magnetic tape, compact disc, and high-density optical disk formats such as Blu-ray. The term nearline is a combination of the words near and online. The removable storage concept dates back to the IBM mainframe computer and remains a popular option for individuals, small businesses and large enterprises. Nearline storage is the on-site storage of data on removable media.
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