The Design and Organization of Data Centers/Redundancy

< The Design and Organization of Data Centers

Everything will eventually fail. Redundancy allows you to minimize the damage of a system failure.

Contents

Failure characteristicsEdit

Planned vs. unplanned

Total vs. partial

Frequency of failure

Length of partial failure or outage

Types of redundancyEdit

StructureEdit

Ladder

Mesh

N+1

ImplementationEdit

Active/active

Active/passive

Human FactorsEdit

Notification

Unattended problem resolution

Documentation and problem clarity

Allowance for no-impact maintenance