how to config. mirror of two linux server

R/Sir

i am having a probelm ? how to configure a two linux
server for data replication or u can say as a mirrorring of two server.
I would have two identical server in two differnet machine with same
configuration. can u guide me what I need to do to mirror the two
servers so that updates to the primary server its replicate on secondary
server

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MANGESH
S.KAMTIKAR
SCIENTIFIC OFFICER /ENGGINER "SB"
NATIONAL
INFORMAICS CENTRE
GOVT.OF INDIA
DEPARTMENT OF INFORMATION
TECHNOLOGY,
MINISTRY OF COMMUNICATION & INFORMATION
TECHNOLOGY,
GANESHKHIND ROAD, PUNE.