Dependability Requirements

Definition

Dependability requirement

a user-oriented quality requirement that specifies a minimum required amount of the quality factor dependability

Objectives

The typical objectives of dependability requirements are to ensure that the specified application or component is:

• Available when needed.
• Reliable in its operation.
• Robust under abnormal conditions.

Types

The following are different types of dependability requirements:

1. Availability Requirements
2. Reliability Requirements
3. Robustness Requirements

Guidelines

The following guidelines have been found to be useful when producing dependability requirements:

• The scope of a dependability requirement can be:
  • A business enterprise
  • An application
  • A component
  • A center
• For guidelines that are specific to individual types of dependability requirements, see the guidelines sections of following webpages:
  • Availability Requirements:
  • Reliability Requirements.
  • Robustness Requirements.