Although the picture below seems extremely funny, in theory screaming for help is the last thing that we should do when disaster happens. But the theory is not reality!
We would expect that Disaster Recovery plans are just an extra measure for natural disasters. So we build our datacenters deep in the ground, Earth-quake free zones, and different geographic arias. But I saw some dazzling numbers that contradicted me:
It is rather difficult to keep your entire business alive when a junior electric engineer misunderstands which cable is the most important power cord for the datacenter and disconnects it. And this is just the simplest example that you can’t predict all the downtimes.
A disaster recovery solution should cover at least these aspects:
- Avoid Single Point of Failure
- Prevent Data Loss
- Reduce Downtime Cost & Revenue Impact for Planned & Unplanned Outages
- Disaster and Data Protection for Compliance & Regulatory Purposes
Depending on the tools and architecture used a Disaster Recovery plan can lead to a complex and expensive implementations that will make you question twice: why should we do it.
It is just a matter of choosing the right tools.
A low cost, simple and low risk solution for Oracle databases would be using Data Guard to Oracle Cloud environment.
The combo would easily cover:
- Primary / DR synchronisation
Using Data Guard it would assure the synchronization on different MAA best practices.
- On-Demand elasticity after migration to the DR site
Using the Database Cloud Service offers you the elasticity needed to fit your database in the cloud.
- High investment in Hardware and Software & DR site operational aspects
DR requires High investments in new Hardware, Software licenses and additional staff to operate the site... Using Oracle Database Cloud Service would drastically reduce these costs.
- Data inconsistency or corruption
Data corruption can happen if remote storage mirroring solutions are used to replicate database files instead of using Oracle Data Guard of Golden Gate.
From Disaster to Recovery it’s just a matter of choosing the proper tools, software and the right partners. In my next post I will detail 3 Disaster Recovery architectures using Database Cloud Backup Service, Data Guard, and obviously the Oracle Public Cloud environment.
**The views expressed in this post are my own and do not necessarily reflect the views of Oracle.