A data storage device is a device for recording (storing) information (data). Recording can be done using virtually any form of energy, spanning from manual muscle power in handwriting, to acoustic vibrations in phonographic recording, to electromagnetic energy modulating magnetic tape and optical discs.
A storage device may hold information, process information, or both. A device that only holds information is a recording medium. Devices that process information (data storage equipment) may either access a separate portable (removable) recording medium or a permanent component to store and retrieve information.
Electronic data storage requires electrical power to store and retrieve that data. Most storage devices that do not require vision and a brain to read data fall into this category. Electromagnetic data may be stored in either an analog or digital format on a variety of media. This type of data is considered to be electronically encoded data, whether or not it is electronically stored in a semiconductor device, for it is certain that a semiconductor device was used to record it on its medium. Most electronically processed data storage media (including some forms of computer data storage) are considered permanent (non-volatile) storage, that is, the data will remain stored when power is removed from the device. In contrast, most electronically stored information within most types of semiconductor (computer chips) microcircuits are volatile memory, for it vanishes if power is removed.
With the exception of barcodes and OCR data, electronic data storage is easier to revise and may be more cost effective than alternative methods due to smaller physical space requirements and the ease of replacing (rewriting) data on the same medium. However, the durability of methods such as printed data is still superior to that of most electronic storage media. The durability limitations may be overcome with the ease of duplicating (backing-up) electronic data.
Other articles related to "data storage device, data, storage, data storage":
... He authorizes a joint mission to obtain a Wraith data storage device from a hive-ship ... the Atlantis team, but Sheppard anticipates his move and his team takes the data storage device ... behind from a joint Atlantis-Genii mission to obtain a Wraith data storage device ...
... Especially for carrying around data, the weight and volume per MB are relevant ... With mobile data connections the data need not be carried around to have them available ...
... he introduced the concept of the "family room", and the "storage wall" ... The storage wall was essentially the idea of recessed, built-in bookcases or shelving occupying space previously lost between walls ... while writing the book, when Nelson's publisher was pressuring him to finish the section on storage ...
... Regardless of the data repository model or data storage media used for backups, a balance needs to be struck between accessibility, security and cost ... Using on-line disks for staging data before it is sent to a near-line tape library is a common example ... On-line On-line backup storage is typically the most accessible type of data storage, which can begin restore in milliseconds time ...
Famous quotes containing the words device, data and/or storage:
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