Fail-Over Cluster

• aka High-Availability Cluster (HA Cluster)

• mission-critical applications

• 9's of Availability

  • 1 90.0000% 37 days
  • 2 99.0000% 3.7 days
  • 3 99.9000% 8.8 hours
  • 4 99.9900% 53 minutes
  • 5 99.9990% 5.4 minutes
  • 6 99.9999% 32 seconds

備註: