??? Resiliency: the capability of a system to prevent degradation or failure as well minimize
the damage or loss from a failure or malfunction; resiliency is affected by quality,
design and stability
??? Redundancy:. the use of multiple redundant critical components, such as CPUs,
network cards, electrical transmission, power supplies, disk drives, switches, routers,
cooling systems, and other equipment used to support operations; redundancy is not
limited to hardware, it can also include mirrored applications or databases, setup, and
configuration files.
??? Inclusion:.including high availability through the entire application stack, including
the client, middleware, and hardware
Database H gh Ava lab l ty: An Extended Survey
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??? Serviceability:.the ability of the service to detect and rapidly correct problems and
reconfigure itself online
??? Manageability:.the ease and ability to evaluate and tune for maintenance and availability,
to identify critical resources, traffic patterns, and performance levels, and to
configure business-critical applications
??? Methods.
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