|
Clustering is a fool-proof way
to ensure your server contents are
replicated on another server. In
the event of a primary server failure,
the clustered server is automatically
turned on. The backup or clustered
server can be a passive, standby
server or an active server.
How clustering is achieved
Copying:
All data is continuously copied
onto a secondary server.
Data Mirroring:
Data is mirrored over multiple disks
used by two or more servers. If
the primary server fails, the secondary
server takes over and uses the data
stored on its disks.
A combination:
Clustering can be achieved on multiple
levels using a combination of web
servers and/or multiple databases.
|
