uptime
Server operational period
Uptime is the period during which a system, machine, or service is operational and available.
The term originated in computing—servers and websites are measured by their uptime percentage, with "five nines" (99.999%) being the gold standard.
The site had 99.9% uptime last quarter.
The concept extends to any continuous operation: factory uptime, personal productivity.
The opposite is downtime.
Needless duplication
- failoverAutomatic backup system activation
- reliabilityConsistent, predictable performance
- continuityUninterrupted progression or coherence
- accessibilityEase of approach
connectivity · fault-tolerance · reachability · service-level · outage · always-on · operational
One who attends tables
- datacenterFacility housing networked computers
- cloudAtmospheric water vapor mass
- hostingReceiving guests socially
- clusterGathered group nearby
node · instance · backup · replication · distributed · network · system · platform
Resistance to displacement
- consistencyReliable adherence to standards
- dependabilityConsistent trustworthy nature
- resilienceCapacity to recover quickly
- robustnessResistance to failure
durability · trustworthiness · steadiness · performance · responsiveness · predictability · assurance · continuity
redundancy
Needless duplication
- failoverAutomatic backup system activation
- reliabilityConsistent, predictable performance
- continuityUninterrupted progression or coherence
accessibility · connectivity · fault-tolerance · reachability · service-level · outage · always-on · operational
server
One who attends tables
- datacenterFacility housing networked computers
- cloudAtmospheric water vapor mass
- hostingReceiving guests socially
cluster · node · instance · backup · replication · distributed · network · system · platform · architecture
stability
Resistance to displacement
- consistencyReliable adherence to standards
- dependabilityConsistent trustworthy nature
- resilienceCapacity to recover quickly
robustness · durability · trustworthiness · steadiness · performance · responsiveness · predictability · assurance · continuity
metrics
Standards for assessment
tracking · heartbeat · ping · incident · notification · reporting · observability · threshold · baseline · anomaly
- monitoringmetrics, alerts, dashboards, continuous monitoring, logs
- fault toleranceredundancy, failover, failsafe, fail-safe, disaster recovery
- IT supporthelpdesk, tech support, IT support, technical assistance, help desk
- Operations Metricsthroughput, capacity utilization, capacity, flow rate, completion rate
- reliability metricserror rate
- System Metricslatency, throughput, spike, bottleneck, throttling
uptimedowntime
Period of non-operation
outage · offline · unavailability · crash · system failure
uptimeinstability
Tendency toward unpredictable change
unreliability · failure · malfunction · disruption · breakdown
uptimedowntime
Period of non-operation
service outage · unavailability · service disruption · inaccessibility · unresponsiveness
time, up, update, upgrade, uphold, timely, timed, timing, downtime