There could be several kinds of failures you have to face with.
- Individual Racks
- Individual hosts
- OS / Apps
A disaster recovery is an org’s method of regaining access and functionality to its IT infra after events like a natural disaster, cyber-attack or a business disruption.
- vSphere Replication
- Hypervisor based asynchronous replication
- Enables DR and data protection for VM’s
- Customize recovery point objective from 5 minutes to 24 hours
- Provides multiple point in time recovery points
- Protects up to 2000 VMs per vCenter
- Copies VM’s from a primary site to a secondary site
- Site Recovery Manager
- Minimizes downtime in case of disasters by leveraging automation and orchestration
- Provides nondisruptive testing of disaster recovery plans
- Provides policy-based management to protect virtual machines
- Compatible with any storage
- Can be used on-prem or as a service
- Proactive HA
- Receives messages from a provider plugin (DELL, HP, …) and migrate VMs to a different host because of a possible failure.
- Manual option will provide recommendations, Automated will migrate VM’s to other hosts
- The failed host can be placed into maintenance mode after the VM’s are migrated
- Maintenance mode: ensures VMs do not run on partially failed hosts
Quarantined mode: balances performance and availability by avoiding the use of partially degraded hosts as long as VM performance is unaffected.