Fault Tolerance – Application Software Essay examples

* Reduce the likelihood of failure by identifying risk events and dealing with them explicitly

• Prevention: Policies to prevent compromise and the review of mean time between failure (MTBF) requirements are covered under the prevention category. The review of qualified personnel, serviced information technologies, and maintenance tasks are established and reviewed. Prevention covers the tracking, trending, and reporting of IT systems performance. (Arnason, S, & Willett, K.D. 2008)

Information will only have value if customers can access it at the right times. Availability can be affected by system errors, and malicious attacks as well as infrastructure problems. Availability is ensured by maintaining hardware as well as repairing hardware immediately when need arise. A correct functioning operating system should also be maintained in the environment free of software conflicts. Adequate communication bandwidth should also be addressed as well as preventing bottlenecks from occurrence.

MAGALHAES, R. (2005, MAY). THE BUSINESS CONTINUITY PLAN RECOVERY DOCUMENT. RETRIEVED ON FEBRUARY 23, 2007, FROM

IEEE Std 982.1-2005 (Revision of IEEE Std 982.1-1988) - IEEE Standard Dictionary of Measures of the Software Aspects of Dependability

A high level of interconnectedness between system components, reliance on indirect information sources, an unpredictable environment, or incomprehensibility of a system to its operators indicates complexity within a system (Perrow, 1999). Since systems are designed, run and built by humans, they cannot be perfect. Every part of the system is subject to failure; the design can be faulty, as can the equipment, the procedures, the operators, the supplies, and the environment. Since nothing is perfect, humans build in safeguards, such as redundancies, buffers, and alarms that tell operators to take corrective action. But occasionally two or more failures can interact in ways that could not be anticipated. These unexpected interactions of failures can defeat the safeguards, and if the system is also “tightly coupled” thus allowing failures to cascade, it can bring down a part or all of system. The vulnerability to unexpected interactions that defeat safety systems is an inherent part of highly complex systems; they cannot avoid this (Perrow, 1984).

Several times a week, operations are halted due to server and desktop crashes. As discussed in Chapter 10, the ability to get data quickly and accurately crucial to decision making among management. However, this is major weakness for this organization.

A disaster is defined as a sudden, unplanned catastrophic event that renders the organizations ability to perform mission-critical and critical processes, including the ability to do normal production processing of systems that support critical business processes. A disaster could be the result of significant damage to a portion of the operations, a total loss of a facility, or the inability of the employees to access that facility. The disaster recovery process consists of defining rules, processes,

Availability, outages and down-times cause a major impact on small businesses producing business disruptions (Armbrust et al., 2010). There is no doubt this is a problem requiring further research, as this may cause small businesses to fail through competition and cost. Although, some of the failures may last a short time, some of the outages may last longer like weeks depending on the cause of the unavailable issue. There are some outages that cannot be controlled, but there are many that are controllable.

Also, “During the initiation stage of the project, the following ‘issues/considerations’ had to be resolved: which methodology should be used in order to implement an efficient BCM programme and at the same time to meet the regulatory requirements imposed by the BOG?” (Aronis,& Stratopoulos, 2016 Spring) Moreover, there was an apparent lack of both communication and supervision concerning the error email that was sent out. Cook (2015) states that the purpose of business continuity and disaster recovery is to minimize the damage and control the repricutions. (p.23) The company needed to have someone monitoring the systems at all hours of operation in order to catch issues before or when they

Mission critical system uptime depends on people, process, and technology. If people and processes are ignored, the system becomes significantly more vulnerable to human error – the number one cause of downtime.

It is also a science because the software is developed by computer scientists and engineers. Faults are a precise interaction of hardware and software that can be fixed given enough time.

Failure severity: Brief significance or grading of the failures modes effect on item operator; failure mode effect severity as related to the defined boundaries of the analyzed system.

Now a day’s Information Technology plays an important role in every field whether it is in big Multinational companies, or in Hospital or in school, colleges, bank etc. It is having a wide range. Every field is now a system oriented where each and every person should have knowledge of basic computer. Information technologies also important to beat the competition in various industries. In our survey report we are going to survey and test the reliability of hardware, networks and software in information technology field. Information technology is a combination of Hardware, software and Networks. It is an combining of technology, users and

Availability: Ensuring that systems and data are accessible to authorized users when they need it.