backup

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Related to Back-up: computer backup

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 RS 1300 and 1500 LCD offer high performance protection for your home and business computer systems.
The Back-UPS ES 750 comes equipped with USB (Universal Serial Bus) connectivity and includes APC's PowerChute Personal Edition software, an easy-to-use, safe, system shutdown tool.
American Power Conversion (APC) has expanded its Back-UPS family of uninterruptible power supplies (UPS) with the introduction of the Back-UPS RS 1000VA and 1500VA units.
APC HAS announced a major addition to its Back-UPS family of uninterruptible power supplies.
These professionals realize that older "legacy systems," which involve downloading software onto onsite computers, and all the associated costs of update fees, back-ups, equipment obsolescence and regular IT personnel visits are not ideal solutions for managed properties.
Its Back-UPS series, which offers instantaneous battery backup power, is also available at retail.
This will, in turn, set up a domino effect in which back-ups in acute care facilities lead to premature discharge without adequate care programs.
law enforcement had no reserves, no back-ups, no alternative forces to draw on.
hospitals routinely offered consistent emotional support during labor, using technological interventions as back-ups, annual savings could reach $2 billion, asserts study director John Kennell of Case Western Reserve University in Cleveland.
Requiring no changes to the existing Exchange server or backup architecture, Ontrack PowerControls slashes restore time, eliminates brick-level back-ups, minimizes the time it takes to locate all emails matching specific criteria using advanced searching capabilities, and eliminates the need for an Exchange recovery server.