Disaster Recovery
Backup-restore, pilot light, warm standby and active-active postures.
2 to work through
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intermediate
An enterprise platform with strict availability commitments must define its disaster recovery strategy. How should RTO and RPO targets drive the choice between backup restore, warm standby, and active-active?
2 min answer -
advanced
You plan a regional failover. Name every dependency that must already exist in the second region for the plan to be executable, not just for traffic to be served.
2 min answer
4 terms in this topic
Cloud Disaster Recovery
Designing and rehearsing recovery from the loss of a zone, a region or a provider — where the plan is worth exactly as much as its last test.
practiceFailback
Returning to the primary region after a failover, including reconciling the data written while it was unavailable — the half of DR that is usually un…
patternPilot Light
A disaster recovery posture where core data is continuously replicated and minimal infrastructure runs, with the rest provisioned only on failover.
practiceWarm Standby
A continuously-replicated, scaled-down running copy of a system in a second location, ready to take traffic within minutes.
1 artifact you would hand over
Neighbouring topics
Cloud Architecture
General material on designing for cloud platforms.
Compute Models
Instances, containers and functions, and what each is priced and shaped for.
Cloud Storage
Object, block and file storage, and the access patterns each suits.
Cloud Databases
Managed relational, key-value, document and analytical services.
Containers
Images, registries, immutability and the deployment model they enable.
Kubernetes
The reconciliation loop, and whether the workload needs what it provides.
Serverless
Scale to zero, per-request billing, cold starts and connection limits.
Autoscaling
Signals, delays and bounds — and the maximum that caps a runaway bill.
Load Balancing
Distributing traffic, health checking, and removing failures from rotation.
Multi-Region Architecture
Surviving a region, and the data consistency price of doing so.
Availability Zones
The unit of correlated physical failure, and what zones do not protect against.
Backup Strategies
Scope, immutability, separation, and the restore drill that makes it real.
Infrastructure as Code
Declarative infrastructure, drift, state files and rebuild-from-empty.
Landing Zones
A governed foundation of accounts, network, identity and guardrails.
Managed Services
Which operational responsibilities actually transfer, and which do not.
Cloud Migration
Per-application disposition, sequencing and the capability change underneath.
Multi-Cloud
Best-of-breed, portfolio and portable — three very different costs.
Edge Computing
Moving compute towards the user, and what cannot follow it.
Cloud Governance
Preventive policy, tagging, quotas and cost and security guardrails.