Prepare for failure before it happens

High availability and disaster recovery

High availability reduces interruption inside an environment. Disaster recovery provides a path back when the environment itself is unavailable. Both begin with business recovery objectives and end with rehearsed procedures backed by evidence.

Core focus

What this practice covers

Architecture and objectives

Translate RTO, RPO, workload behavior, failure domains, and budget into an appropriate topology.

Failover operations

Document detection, decision, failover, client redirection, validation, and failback for SQL Server and PostgreSQL.

Recovery proof

Test restores, replication state, backup chains, application connectivity, and data consistency on a regular schedule.

Typical work

What teams work on

SQL Server Availability Groups, FCI, log shipping, and replication
PostgreSQL streaming replication, Patroni, etcd, and HAProxy
Backup architecture and off-site retention
RTO and RPO assessment
Failover and failback runbooks
Disaster-recovery exercises and evidence reports

Results

What good looks like

A topology matched to business recovery targets
Documented failover authority and procedure
Measured recovery times instead of assumptions
Teams that have practiced the recovery path