IT Equipment Purchase and Failure Prevention Policy

1.0 Overview
This IT Equipment Purchase and Failure Prevention policy provides a guideline for the purchase of IT equipment when the equipment supports organizational identified critical services. This policy will name critical services and provide a guideline for purchasing technologies that are failure tolerant.

2.0 Purpose
The purpose of this policy is to ensure that critical services are not interrupted by a single common failure. It provides standard guidelines to allow IT equipment purchased for essential services to have reliability built into the equipment. This is to prevent service outage for critical services.

3.0 Scope
This policy covers any computers providing critical services to the organization.

4.0 Critical Services
Critical services which are required for normal operation of the organization include:

  1. File sharing service on a file sharing server.
  2. Web services to the internet
  3. Email services
  4. Database services for internal users and critical external applications.
  5. Critical external application servers.
  6. Domain controller servers
  7. Firewall to connect these services to the internet.

Any servers or equipment that supports these services should adhere to this policy including connection equipment from the internet to these services.

5.0 Equipment Requirements
All critical services are required to utilize redundant technologies including:

  1. Dual power supplies on all servers providing critical services.
  2. RAID disk arrays to prevent one disk failure from interrupting services
  3. Uninterruptable power supplies that can provide power for a minimum of 1 hour to servers operating critical services in the event of a power outage.

6.0 Additional Requirements
For services that are critical for income or operations that cannot be interrupted the following technologies are also recommended:

  1. A backup generator to ensure that long term power outages cannot interrupt service.
  2. More than one server for the same service where the servers use clustering or load balancing technology.