mirroring

Mirroring may refer to:mirror (computing), a direct copy of a data set, such as websitedisk mirroring, copying a whole computer's hard diskmirroring (psychology) imitating someone with which there is the purpose of acquiring empathy
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(p. pr. & vb. n.)
of Mirror
  

mirror

1. <hardware, storage> Writing duplicate data to more than one device (usually two hard disks), in order to protect against loss of data in the event of device failure. This technique may be implemented in either hardware (sharing a disk controller and cables) or in software. It is a common feature of RAID systems.
Several operating systems support software disk mirroring or disk-duplexing, e.g. Novell NetWare.
See also Redundant Array of Independent Disks.
Interestingly, when this technique is used with magnetic tape storage systems, it is usually called "twinning".
A less expensive alternative, which only limits the amount of data loss, is to make regular backups from a single disk to magnetic tape.
2. An archive site or web site which keeps a copy of some or all files at another site so as to make them more quickly available to local users and to reduce the load on the source site. Such mirroring is usually done for specific whole directories or files on a specific remote server as opposed to a cache or proxy server which keeps copies of everything that is requested via it.
For example, src.doc.ic.ac.uk is the main UK mirror for the GNU archive at gnu.org. There are also several mirrors of this dictionary.
(1998-06-11)

Noun
1. polished surface that forms images by reflecting light
(hypernym) reflector
(hyponym) car mirror
2. a faithful depiction or reflection; "the best mirror is an old friend"
(hypernym) depicting, depiction, portraying, portrayal
Verb
1. reflect as if in a mirror; "The smallest pond at night mirrors the firmament above"
(hypernym) reflect, reverberate
2. reflect or resemble; "The plane crash in Milan mirrored the attack in the World Trade Center"
(hypernym) reflect