I.T PPT
CRITICAL SYSTEMS
OBJECTIVES:-
1.A life-critical system or safety-critical system is a system whose failure or malfunction may result in: death or serious injury to people, or loss or severe damage to equipment or environmental harm.
2.Risks of this sort are usually managed with the methods and tools of safety engineering.
3.Typical design methods include probabilistic risk assessment, a method that combines failure mode and effects analysis (FMEA) with fault tree analysis.
4.Safety-critical systems are increasingly computer-based.
TYPES OF CRITICAL SYSTEMS :-
Three Kinds of Critical Systems are there
1. Safety-critical systems
Failure may cause injury or death to human beings.
Example: nuclear and chemical plants, aircraft.
Safety is an emergent property of whole systems; software may play only a small part.
2. business-critical systems :-
Work breakdown as a consequence of data loss has a significant impact on business operations and it can cause profit loss, regardless of the company size.
Failure may result in the failure of the business using that system.
Examples:-
Customer account system in a bank.
Online shopping cart.
Areas where secrecy is required.
Defence.
Secret service.
Sensitive areas in companies.
Areas where personal data are administered.
Police records.
Administration of data of customers.
Administration of student marks.
3.Mission-critical systems :-
Failure may result in the failure of some goal-directed activity.
Mission critical refers to any factor of a system (equipment, process, procedure, software, etc.) whose failure will result in the failure of business operations.
That is, it is critical to the organization's "mission."
Examples:- Navigational system of a space probe.
OBJECTIVES:-
1.A life-critical system or safety-critical system is a system whose failure or malfunction may result in: death or serious injury to people, or loss or severe damage to equipment or environmental harm.
2.Risks of this sort are usually managed with the methods and tools of safety engineering.
3.Typical design methods include probabilistic risk assessment, a method that combines failure mode and effects analysis (FMEA) with fault tree analysis.
4.Safety-critical systems are increasingly computer-based.
TYPES OF CRITICAL SYSTEMS :-
Three Kinds of Critical Systems are there
1. Safety-critical systems
Failure may cause injury or death to human beings.
Example: nuclear and chemical plants, aircraft.
Safety is an emergent property of whole systems; software may play only a small part.
2. business-critical systems :-
Work breakdown as a consequence of data loss has a significant impact on business operations and it can cause profit loss, regardless of the company size.
Failure may result in the failure of the business using that system.
Examples:-
Customer account system in a bank.
Online shopping cart.
Areas where secrecy is required.
Defence.
Secret service.
Sensitive areas in companies.
Areas where personal data are administered.
Police records.
Administration of data of customers.
Administration of student marks.
3.Mission-critical systems :-
Failure may result in the failure of some goal-directed activity.
Mission critical refers to any factor of a system (equipment, process, procedure, software, etc.) whose failure will result in the failure of business operations.
That is, it is critical to the organization's "mission."
Examples:- Navigational system of a space probe.