SOURCES OF SERVER AND NETWORK DOWNTIME

Unplanned server and network downtime can be caused by a number of different events:

• Catastrophic server failures caused by memory, processor or motherboard
failures

• Server component failures including power supplies, fans, internal disks,
disk controllers, host bus adapters and network adapters

• Software failures of the operating system, middleware or application

• Site problems such as power failures, network disruptions, fire, flooding or
natural disasters

To protect critical applications from downtime, you need to take steps to protect
against each potential source of downtime.

Eliminating potential single points of failure is a time-tested technical strategy for reducing the
risk of downtime and data loss. Typically, network administrators do this by introducing redundancy in
the application delivery infrastructure, and automating the process of monitoring and
correcting faults to ensure rapid response to problems as they arise. Most leading
companies adopting best practices for protecting critical applications and data also
look at the potential for the failure of an entire site, establishing redundant systems at
an alternative site to protect against site-wide disasters.

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