backup

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backup

[′bak‚əp]
(building construction)
That part of a masonry wall behind the exterior facing.
(civil engineering)
Overflow in a drain or piping system, due to stoppage.
(computer science)
Logical or physical facilities to aid the process of restarting a computer system and recovering the information in it following a failure.
The provision of such facilities.
(engineering)
An item under development intended to perform the same general functions that another item also under development performs.
A compressible material used behind a sealant to reduce its depth and to support the sealant against sag or indentation.
(graphic arts)
An image printed on the reverse side of a printed sheet.
The printing of such an image.
(metallurgy)
A support used to balance the upsetting force in the workpieces during flash welding.
(petroleum engineering)
During drilling, the holding of one section of pipe while another is screwed out of it or into it.

backup

1. That part of a masonry wall behind the exterior facing.
2. A compressible material used behind a sealant to reduce its depth and to support the sealant against sag or indentation.
3. Overflow in a drain or piping system, due to stoppage.
4. A condition where waste water flows back into another fixture or compartment or water line (but does not flow back into the potable water system).

backup

(operating system)
("back up" when used as a verb) A spare copy of a file, file system, or other resource for use in the event of failure or loss of the original.

The term commonly refers to a copy of the files on a computer's disks, made periodically and kept on magnetic tape or other removable medium (also called a "dump").

This essential precaution is neglected by most new computer users until the first time they experience a disk crash or accidentally delete the only copy of the file they have been working on for the last six months. Ideally the backup copies should be kept at a different site or in a fire safe since, though your hardware may be insured against fire, the data on it is almost certainly neither insured nor easily replaced.

See also backup software, differential backup, incremental backup, full backup. Compare archive, source code management.

backup

(1) A duplicate copy of data or of an entire storage drive on a separate storage medium. "Backup" is the noun; "back up" is the verb. See backup software, backup types, backup storage, copy data, backup and restore, disaster recovery and LAN-free backup.

(2) Additional hardware resources ready to take over if the main system fails. See fault tolerant.
References in periodicals archive ?
The Back-UPS ES 750 offers an equipment protection policy of $50,000 (see policy for details).
The Back-UPS RS provides high performance, all-in-one power protection with more outlets and longer runtime including file saving, auto-shutdown software to increase overall system reliability.
Despite their compact size, the Back-UPS ES 350 (350VA - 225W) and Back-UPS ES 500 (500VA - 325W) incorporate five outlets.
Those who need longer battery time and more power can step up to the Back-UPS Pro at $199.
It may be that many of those who didn't back up data or have uninterruptible power supplies believed computers were getting more reliable and, as a result, were becoming more confident that back-ups and power protection were less important.
If you do not have other recent back-ups, you might wish to separate this step into two distinct back-ups: one for data and other nonexecutable files, and the second for executable files, including *.
Tenders are invited for Back-Ups Rs 600 Apc Ups Batteries Make:Apc 12V-7Ah Chloride Battery For 0.
Windows XP Home has System Restore, which takes regular automatic (or manual) back-ups of the system.
El fabricante APC anuncio la introduccion del sistema Back-UPS 1000VA y unidades de 1500 VA con los que expande su familia de Back UPS de suministro de energia ininterrumpible.
Owens could do with more help from back-ups Tai Streets and JJ Stokes, however.