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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: