System/subsystem Specification Plan

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What is it?

The System / Subsystem specification plan describes the requirements for a system or subsystem and the methods to be used to ensure that each requirement is met. This template is used to identify the specifications of an IT system and its subsystems, as well as providing detailed description of its functions. It also defines interfaces with other systems/subsystems.

Who uses it?
Technical Architect, Development Manager, Project Manager, IT Manager, System Administrator, Documentation Manager.

When is it used?
The System / Subsystem specification is used to describe the methods that will ensure that each requirement is met. Requirements related to the system or subsystem interfaces may be presented in the system/subsystem specification plan.

Table of Contents

1    Project Information
1.1    Objectives
1.2    Document Overview
1.3    Scope
1.4    System Overview
1.5    Key Stakeholders
1.6    References
1.7    Relationship to Other Plans
1.8    Points of Contact
1.9    Policies, Directives and Procedures

2    System Characteristics
2.1    System/Subsystem Description
2.2    System/Subsystem Partitions and Functions
2.3    Accuracy and Validity
2.4    Timing
2.5    Adaptability
2.6    Failure Contingencies
2.7    System Logical Flow

3    Environment
3.1    Equipment Environment
3.1.1    Processors
3.1.2    Storage Media
3.1.3    Input/Output Devices
3.2    Communications Environment
3.2.1    Network
3.2.2    Interface Protocol
3.3    Software Environment
3.4    Software Interfaces
3.5    Diagnostics
3.6    Data and Reports
3.6.1    Inputs
3.6.2    Outputs/Reports

4    Security
4.1    Control Points
4.2    Vulnerabilities
4.3    Safeguards

5    Project Management
5.1    Schedule
5.2    Risks
5.3    Constraints
5.4    Issues
5.5    Assumptions
5.6    Dependencies
5.7    Sign-Off Criteria

6    Project Team
6.1    Roles
6.2    Responsibilities
6.3    Resources
6.4    Software Tools
6.5    Training

7    Appendix A
7.1    Glossary of Terms
7.2    Acronyms and Abbreviations

Index of Tables
Table 1 – Control Points
Table 2 – Vulnerabilities
Table 3 – Safeguards
Table 4 – Schedule
Table 5 – Risks
Table 6 – Constraints
Table 7 – Issues
Table 8 – Assumptions
Table 9 – Dependencies
Table 10 – Sign-off Criteria
Table 11 – Roles
Table 12 – Glossary of Terms
Table 13 – Acronyms and Abbreviations

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