If you’ve been following our blogs and videos, you’ll have noticed us talking about active-active cloud hosting. Active-active architecture is essentially two cloud platforms linked together, running simultaneously. The purpose of this is to provide a more resilient approach to cloud computing.
How does that work?
Well with a single site cloud solution, data and assets are securely stored in one location. Backups should be in place, but if that one site goes offline, so do your services. You’re not necessarily going to lose that data, but from a business continuity perspective, you’re going to be offline.
With active-active cloud hosting a second, synchronised site is added so that your data exists in two locations at once. These two platforms should be separated geographically for ultimate resilience. Whenever you make a change to any data or online assets on the primary platform - a save, modify or update for example - your VM performs a write-operation which is sent to hosts at both locations. It’s basically automatic replication to a secondary site, and your data can be served from either of these platforms at any given time.
This means that if the primary site fails, automatic failover will provide continuation of service from the second site. So no downtime if a data centre fails.
Active-active cloud essentially eliminates the risk of downtime, through continuous availability via an automatic failover.