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2. Computer data storage - Wikipedia

   en.wikipedia.org/wiki/Computer_data_storage

   When used within a robotic tape library, it is classified as tertiary storage instead. Computer data storage or digital data storage is a technology consisting of computer components and recording media that are used to retain digital data. It is a core function and fundamental component of computers. [1] : 15–16.

3. Hard disk drive - Wikipedia

   en.wikipedia.org/wiki/Hard_disk_drive

   Hard disk drives were introduced by IBM in 1956, and were the dominant secondary storage device for general-purpose computers beginning in the early 1960s. HDDs maintained this position into the modern era of servers and personal computers , though personal computing devices produced in large volume, like mobile phones and tablets , rely on ...

4. Disk storage - Wikipedia

   en.wikipedia.org/wiki/Disk_storage

   Disk storage (also sometimes called drive storage) is a data storage mechanism based on a rotating disk. The recording employs various electronic, magnetic, optical, or mechanical changes to the disk's surface layer. A disk drive is a device implementing such a storage mechanism. Notable types are hard disk drives (HDD), containing one or more ...

5. Network-attached storage - Wikipedia

   en.wikipedia.org/wiki/Network-attached_storage

   Network-attached storage ( NAS) is a file-level (as opposed to block-level storage) computer data storage server connected to a computer network providing data access to a heterogeneous group of clients. The term "NAS" can refer to both the technology and systems involved, or a specialized device built for such functionality (as unlike ...

6. Direct-access storage device - Wikipedia

   en.wikipedia.org/wiki/Direct-access_storage_device

   Direct-access storage device. A direct-access storage device ( DASD) (pronounced / ˈdæzdiː /) is a secondary storage device in which "each physical record has a discrete location and a unique address". The term was coined by IBM to describe devices that allowed random access to data, the main examples being drum memory and hard disk drives. [1]

7. History of IBM magnetic disk drives - Wikipedia

   en.wikipedia.org/wiki/History_of_IBM_magnetic...

   IBM introduced the IBM 3310 Direct Access Storage Device on January 30, 1979, for IBM 4331 midrange computers. Each drive had a capacity of 64.5 MB. The 3310 was a fixed-block architecture device, used on DOS/VSE and VM , the only S/370 operating systems that supported FBA devices.