Resilience and Disaster Recovery are done differently in the Public Cloud. Things we take for granted on-premises like Virtual Machines accessing shared storage, which enables features like HA, V-Motion and Fault Tolerance- do not exist in the public cloud. This makes resilience within the network architecture even more important.
Dependent on the business needs of each application, we need to architect layers of availability and resiliency across all your environments and clouds. This includes architecting for:
· Multi Availability Zone resilience,
· Having subnets that can span across Availability Zones,
· Ensuring that your Load Balancers are Availability Zone resilient,
· Deploying Virtual Machines across Availability Zones so you can easily failover.
Cloud Solutions Group implements Cloud Architectures with each of these layers in mind.