and.skills:.To achieve a 5-Nines environment, the administration, monitoring,
and control of the high availability IT environment must be simple. Otherwise,
installation issues, upgrades, human error, and customization will affect the system??™s
availability. Because user error is a growing cause of outages, it needs to apply techniques
to reduce the chance of user/administrator error.
??? Scalability:.Scalability of the system, network database, and applications is the key
to availability. An available, well-defined, and properly-configured scalable platform
is one that has enough capacity to handle the estimated or measured application??™s
workload, with no bottleneck in the hardware. For software division, achieving the
goal of scalability and therefore dependability and availability requires effort at all
phases of development: design time, implementation time, execution time, and during
maintenance.
??? System.architecture:.Poor planning architecture or operational support can foster
poor performance, impeded functionality, high cost of ownership, complex administration,
lack of capacity and scalability, and poor reliability and availability. A properly
developed system, on the other hand, is one that is of high quality, high performance,
and high availability with a capacity for growth.
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