The 3-Phase High Availability & Uptime Management Process

A robust methodology to ensure Uptime (with the capability to reach 99.99%)

Phase 1: Risk Analysis & Architecture Design

Objective: Define strict RTO/RPO requirements and design architecture without Single Point of Failure (SPOF).

Key Execution Steps:

Criticality Assessment (RTO/RPO) for OT systems
Single Point of Failure (SPOF) Audit
Redundancy & High Availability (HA) Design (Active-Active, N+1)

Phase 2: Implementation & Hardening

Objective: Deploy HA solutions and establish maintenance processes to minimize Unscheduled Downtime.

Key Execution Steps:

Implement High Availability Clusters (Server Failover)
Implement Resilient Network Fabric (Dual Homing, Redundant Protocols)
Proactive Monitoring & AIOps (Predict and resolve issues before Incidents occur)
Zero-Downtime Patching & Change Management

Phase 3: Validation & Continuous Improvement

Objective: Verify Uptime through testing and improve processes to prevent recurring Incidents.

Key Execution Steps:

Disaster Recovery Testing (Annual DR/BCP Simulation)
Uptime Tracking & SLA Reporting (Target 99.99%)
Root Cause Analysis (RCA) and Permanent Fix Implementation

The Outcome: Sustained Uptime

This rigorous process ensures business continuity, proving that high availability is a result of strategic planning, dedicated redundancy architecture, and disciplined validation, meeting the demanding 99.99% SLA for mission-critical systems.