OCI Full Stack Disaster Recovery

Most disaster recovery plans protect the database beautifully and then leave the rest of the application stack to chance. The database fails over cleanly, the standby comes up, and then someone realises the load balancers, the compute fleet, the DNS records, and the file systems all still point at a region that is no longer there. OCI Full Stack Disaster Recovery exists to close that gap. It is a managed service that orchestrates the failover of an entire application, not just its data layer, so that a recovery event moves every moving part in the right order without a human improvising under pressure. This article explains what the service does, how it models an application, and how to design plans that actually recover the whole stack rather than a fraction of it.

Why the database is not the whole problem

A modern application is a chain of dependencies. The browser hits a load balancer, the load balancer routes to a compute tier, the compute tier talks to a database, and the database depends on storage, networking, and identity. Disaster recovery that protects only the database leaves every other link unprotected, and a chain recovers only as fast as its slowest, most forgotten link. When organisations measure their real recovery time after an incident, the database is rarely the bottleneck. The bottleneck is the manual work of standing up the application tier, repointing DNS, reattaching storage, and confirming that security rules in the recovery region match the primary. Full Stack Disaster Recovery treats the application as a single unit of recovery and automates that entire sequence.

What OCI Full Stack Disaster Recovery actually does

The service lets you model an application as a collection of members, which can include compute instances, block volumes, file systems, load balancers, database systems, and the steps needed to move each between a primary and a standby region. You then build a DR plan, an ordered set of steps that the service executes to switch over or fail over the whole stack. The plan can include built in steps for OCI resources and custom steps that run your own scripts, so it can drive bespoke application logic as well as standard infrastructure. When you trigger the plan, the service runs the steps in order, tracks the result of each one, and gives you a clear record of what succeeded and what needs attention.

Switchover versus failover

The service distinguishes between a planned switchover and an unplanned failover, and the distinction matters. A switchover is graceful and reversible, used for testing or planned maintenance, where the primary is healthy and you move workload deliberately. A failover is for a real disaster where the primary is gone, and it makes assumptions about the unavailable primary rather than waiting for it to respond. Designing both paths, and rehearsing the switchover regularly, is what gives a team confidence that the failover will work when it is the only option left.

Modelling an application correctly

The quality of a Full Stack DR plan depends entirely on how completely you model the application. The common failure is to model the obvious components and forget the supporting ones. A complete model accounts for every resource the application needs to serve traffic in the recovery region.

The lesson from that table is that the database is the part teams get right and everything else is where recoveries fail. A disciplined model walks the full request path and asks, for each hop, what has to exist and be configured in the recovery region for that hop to work. Our pillar guide to disaster recovery and high availability on OCI sets the wider context for where this service fits.

A build framework for Full Stack DR

Keeping the recovery region honest

The quiet enemy of full stack recovery is drift. A plan that was correct six months ago slowly stops being correct as the primary region changes and the recovery region does not. A new security rule is added in production but never replicated. An instance shape is upgraded on the primary while the recovery configuration still references the old one. A secret is rotated in one region only. None of this shows up until a failover, at which point it becomes the reason the recovery failed. The defence is twofold: drive both regions from the same infrastructure as code definitions so changes propagate by construction, and rehearse the plan often enough that drift surfaces in a test rather than in a real disaster. Managing this discipline over time is a core part of what our disaster recovery and HA practice delivers.

Where Full Stack DR fits with the rest of the toolkit

Full Stack Disaster Recovery is the orchestration layer, not a replacement for the underlying protections. It coordinates Data Guard rather than replacing it, it drives storage replication rather than performing it, and it sequences DNS and load balancer changes rather than inventing them. Think of it as the conductor and the individual capabilities as the orchestra. For cross region designs it pairs naturally with cross region DR on OCI, and for the data layer it relies on the database protections described in high availability for Oracle Database on OCI. The value of the service is that it turns a pile of individually correct capabilities into a single, repeatable, testable recovery action.

Operational realities to plan for

Two operational truths shape how teams should use the service. First, a plan is only as trustworthy as its last successful test, so a cadence of regular switchovers is not optional, it is the thing that makes the plan real. Second, the recovery region needs capacity, and capacity has to be either reserved or confidently available at the moment of failover. A plan that assumes compute will be available in the recovery region, and discovers at the worst moment that it is not, has failed in its most basic assumption. Planning capacity, whether through reservations or warm standby resources, is part of designing the plan honestly.

Bringing it together

OCI Full Stack Disaster Recovery raises disaster recovery from a database concern to an application concern, which is where it always belonged. Model the entire request path, protect the data and replicate the configuration, build the failover as an ordered and tested plan, and keep the two regions from drifting apart. Do that and a recovery becomes a single deliberate action with a known outcome rather than a frantic improvisation. Continue with RTO and RPO planning for OCI, Data Guard on OCI explained, and DR testing on OCI, and return to the disaster recovery pillar for the full picture.