Veritas Clustering: High Availability Fundamentals

Veritas clustering sits at the heart of many enterprise HA environments. When it’s configured well, failover feels invisible. When it’s not, outages become memorable for the wrong reasons.

I’ve documented the mental model — service groups, resources, heartbeats, agents, and dependencies — along with common pitfalls and a pre-change checklist for production clusters.

Read the full guide: Veritas Clustering

Start with the dependency map before touching production. Everything else follows from there.