BS ISO/IEC 25045:2010 - Page 2

Systems and software engineering. Systems and software quality requirements and evaluation (SQuaRE). Evaluation module for recoverability. | Status: Confirmed, Current

1 Scope This International Standard is one of the SQuaRE series of International Standards, which contains general requirements for specification and evaluation of systems and software quality and clarifies the associated general concepts. SQuaRE provides a framework for evaluating the quality of software products and states the requirements for methods of software product measurement and evaluation. This International Standard uses a methodology involving two types of evaluation for recoverability. One part of the method makes use of the disturbance injection methodology and a list of disturbances based on common categories of operational faults and events to evaluate the quality measure of resiliency. The second quality measure is based on a set of questions that is defined for each disturbance to evaluate the quality measure of autonomic recovery index by assessing how well the system detects, analyses, and resolves the disturbance without human intervention. This International Standard is applicable to information systems executing transactions in a system supporting single or multiple concurrent users, where speedy recovery and ease of managing recovery is important to the acquirer, owner/operator, and the developer.

1.1 Characteristics

This evaluation module measures the quality measures defined under the following characteristic and sub-characteristics of the quality model as defined in ISO/IEC 9126‑1:2001.

NOTE The reference to ISO/IEC 9126‑1 will be replaced by a reference to ISO/IEC 25010 when published.

Characteristic – Reliability

• Sub-characteristic – Recoverability
• Quality measure – Resiliency
• Quality measure – Autonomic recovery index