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 ?
High-Rely manufactures durable American-made backup devices utilizing highly-removable drives and network-attached auto backup enclosures.
If access to primary storage fails, the path redirect operations simply points the application--such as Oracle, SQL or any other large database or similar application--to the D2D backup device as the new file storage location.
The point here is that, for the purposes of this article, any drive with native capacity below 10GB wasn't included, to keep the list small, as well as providing a focus on drives that may find a place on desktops with more data to store, or as backup devices for small networks.
Perlego's world-class Mobile Device Lifecycle Management Solution makes it easy for their customers to deliver valuable content to device users, update the software installed on those devices and backup device data all through state of the art over-the-air technology.
Our recently launched cellular product line makes it easy to connect hard-to-reach sites and devices, as well as provide cost-effective backup device network connectivity.
The switch to Revinetix' backup device came as the university IT staff sought a more reliable and less time-consuming backup solution over their former AMANDA (Advanced Maryland Automatic Disk Archiver) tape solution.
This virtual tape environment consolidates the management of multiple backup devices and complex backup processes into a single, virtual tape backup process.
Power Backup devices in the form of gensets, UPS and inverters provide consumers with that solution.
A product-based as well as end-user based market segmentation of power backup devices is shown in the report.
Granite City School District #9 and Rich Township High School District #227 Replace Tape Backup Devices in Favor of Reliable Revinetix Solution
Backup devices can be a single tape drive, tape library, silo, or disk arrays.