backup

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Related to Backup copy: Backup types

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 ?
potentially dangerous because it deletes log records that are not saved in any backup copy so it can become impossible to recover database to any point in time after these log records were created (Spenik & Sledge, 2003).
the creation of the private backup copy must not create any unjustified prejudice or injury to the legitimate interests of the copyright owner.
With this approach, VMs are backed up to a disk-based backup repository for fast operational recovery, and then - using backup copy jobs - copied to a tape for archival and long term storage.
More "Notes on the form of the written tender", including the backup copy, please refer to the VOL-form (VOL 5a EC).
There is no easy way to copy an ISO file to ESX Server or make a backup copy of an existing VM.
A replicated image is ready to go almost immediately whereas a backup copy requires a move to become accessible again.
Whenever data is created or changed, a current backup copy is immediately written to disk on the remote site's CDP storage server, and then can be automatically replicated offsite to the central data center or DR site.
They thought that just storing survey and engineering data on their storage server with one local backup copy was sufficient to protect them from disaster.
When his server at work melted down, Scott went back to his apartment to retrieve a backup copy of critical business data he had stored on a portable hard drive.
SAN-based data replication can provide an instant backup copy on local disk for DR, and effectively reduce your backup window to zero.
When a primary server is brought down or fails, DDM automatically scans the backup copy of the data on the secondary device and rapidly populates the new or recovered primary with mini-files of the data.
Ultimately, the company offering this service who truly cares about the client's data will store data onto tape to ensure a reliable backup copy of the data," adds Ash.