Mirrored Servers:
Similar to redundant disk drives, mirrored servers provide the fault-tolerance and redundancy that mission-critical information systems need.
A mirror server stores a copy of data contained on multiple servers. Instead of connecting to the primary site, clients connect to the mirror server and obtain files from it.
Using mirrored servers has a few drawbacks as listed below:
Files are mirrored on the server only at periodic intervals.
Several files on the mirrored server may not be ever accessed.
The mirror server can only store a limited number of files on the Internet.
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