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Computer data storage or digital data storage is a technology ... Tertiary storage is also known as nearline ... It is the storage capacity of a medium divided with a ...
If needed, contents of the computer memory can be transferred to storage; a common way of doing this is through a memory management technique called virtual memory. Modern computer memory is implemented as semiconductor memory, [5] [6] where data is stored within memory cells built from MOS transistors and other components on an integrated ...
The STC 4305 was significantly faster than its mechanical counterparts and cost around $400,000 for a 45 MB capacity. [116] Though early SSD-like devices existed, they were not widely used due to their high cost and small storage capacity. In the late 1980s, companies like Zitel began selling DRAM-based SSD products under the name "RAMDisk."
Nearline storage (Tertiary storage) – Up to exabytes in size. As of 2013, best access speed is about 160 MB/s [11] Offline storage; The lower levels of the hierarchy – from disks downwards – are also known as tiered storage. The formal distinction between online, nearline, and offline storage is: [12] Online storage is immediately ...
11,520,000 bits – capacity of a lower-resolution computer monitor (as of 2006), 800 × 600 pixels, 24 bpp: 11,796,480 bits – capacity of a 3.5 in floppy disk, colloquially known as 1.44 megabyte but actually 1.44 × 1000 × 1024 bytes 2 24: 16,777,216 bits (2 mebibytes) 25,000,000 bits – amount of data in a typical color slide
The capacity of hard drives has grown exponentially over time. When hard drives became available for personal computers, they offered 5-megabyte capacity. During the mid-1990s the typical hard disk drive for a PC had a capacity in the range of 500 megabyte to 1 gigabyte. [6] As of October 2024 hard disk drives up to 32 TB were available. [7]
The notion of "large" amounts of data is of course highly dependent on the time frame and the market segment, as storage device capacity has increased by many orders of magnitude since the beginnings of computer technology in the late 1940s and continues to grow; however, in any time frame, common mass storage devices have tended to be much larger and at the same time much slower than common ...
Electronic data storage requires electrical power to store and retrieve data. Data storage in a digital, machine-readable medium is sometimes called digital data. Computer data storage is one of the core functions of a general-purpose computer. Electronic documents can be stored in much less space than paper documents. [3]