Operational Resilience & High Availability Datasheet
Governed operations that stay available - multi-server active HA, automatic takeover of in-flight work, multi-site operation with site affinity, near-zero-downtime upgrades, and rehearsable disaster-recovery tiers.
Key Highlights
- ✓Multi-server active high availability - multiple servers against one governed estate, coordinated with fenced leases; no idle standby, no split brain
- ✓Automatic takeover of in-flight work - lose a server mid-run and a surviving server drives the run to completion, in the same audit lane
- ✓Runners that ride through failure - ordered server lists and failover keep scheduled work flowing through maintenance and outages
- ✓Multi-site operation with site affinity - servers and runners in each data centre; dispatch prefers the local site and falls back across sites
- ✓Near-zero-downtime upgrades - rolling binary upgrades with per-node drain and compatibility-staged schema changes
- ✓Disaster-recovery tiers - from standard physical database replicas to an advanced near-zero-downtime tier, with rehearsable failover
- ✓Evidence built in - failover drills and recovery runs land in the tamper-evident audit lane, supporting the operational-resilience evidence frameworks like APRA CPS 230 ask for
Governed operations only count if they stay available — through node failures, site failures, planned maintenance, and upgrades. This datasheet covers how OpsChain is built for continuous operations: the active HA architecture, what happens when a server or a site is lost, how planned maintenance drains without dropping work, and the disaster-recovery postures from standard replicas to near-zero-downtime.
It also covers the part your regulator cares about: resilience you can rehearse, with the drill itself recorded as evidence.
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