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11 Examples of High Availability

 , updated on March 17, 2017
High availability is a service that is designed and operated to minimize downtime. It is common for high availability techniques to achieve an availability of over 99.99%. This translates to 52.56 minutes of downtime a year. The following are common high availability techniques.

Reliability Engineering

Designing and building components to be reliable over time in a variety of real world conditions.

Change Management

Controlling change to an environment using a managed process that requires extensive testing before changes are launched to production.

Configuration Management

Tracking the configuration and design of production to support activities such as troubleshooting and rollback to a stable state.

Capacity Management

Managing the capacity of resources such as licenses, storage and computing.

Runbook Automation

Automation of support, operations and incident response processes.

Load Balancing

Distributing workloads across multiple resources using techniques such as cloud computing.

Failure Detection

Automatically detecting failures.

Failover

Automatically moving workloads from failed resources to functioning resources.

Service Desk

Providing a single contact for users to report incidents.

Incident Management

Rapidly escalating incidents to the people in a position to fix things. Restoring service in the quickest way possible.

Problem Management

Following up on incidents to determine root cause and implement fixes and changes to prevent future incidents.
Overview: High Availability
Type
Definition (1)
A service that is designed and operated to minimize downtime.
Definition (2)
A service designed and operated to achieve uptime of 99.99% or more.
Related Concepts

Reliability Engineering

This is the complete list of articles we have written about reliability engineering.
Bulkhead
Cold Standby
Defensive Design
Derating
Design Debt
Design Life
Durability
Entropy
Error Tolerance
Errors
Fail-safe
Fault Tolerance
Graceful Degradation
Latent Error
Maintainability
Material Strength
Mistake Proofing
Self-Healing
Wear And Tear
More ...
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Availability Management Definition

A table of common availability management targets.

Availability

Definitions of availability.

Uptime vs Downtime

A comparison of uptime and downtime with a chart of common targets.

Service Management

A list of IT service management terms.

SLA vs OLA

The difference between a SLA and a OLA.

Incident vs Problem

The difference between incidents and problems explained.

Application Management

The common functions of application management.

Capacity Management

An overview of capacity management.

DevOps

A definition of DevOps with an outline of its components.

IT Services

The definition of IT services with examples.

Patch Management

An overview of patch management with examples.

Process Improvement Examples

An overview of process improvement with examples.
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