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Disaster Recovery and High Availability Flashcards
| Front | Back |
| Difference between RTO and RPO | RTO is Recovery Time Objective (downtime period); RPO is Recovery Point Objective (data loss window) |
| Difference between synchronous and asynchronous replication | Synchronous replication ensures identical data in real-time; asynchronous may have a lag |
| How often should backups be updated | Depends on RPO requirements; typically daily, hourly, or real-time |
| Key elements of a disaster recovery plan | Backup systems, recovery procedures, communication plans, and testing |
| Primary benefit of multi-region deployments | Ensures high availability and minimizes service disruptions across geographic regions |
| Purpose of backups | To ensure critical data is preserved and can be restored in case of a failure or disaster |
| Role of load balancers in high availability | Distributes traffic across multiple servers to prevent overload and ensure availability |
| Steps in testing a disaster recovery plan | Simulating a failure, validating recovery processes, evaluating gaps, and improving the plan |
| What is a cold backup | A backup that is not actively connected and must be manually activated during a recovery situation |
| What is a hot standby system | A backup system that is constantly running and ready to take over in case of failure |
| What is an active-active deployment | Multiple systems actively handle requests, providing redundancy and load balancing |
| What is cloud-based disaster recovery | A strategy leveraging cloud services to store backups and enable recovery operations |
| What is data replication | Copying data across multiple storage systems for high availability and fault tolerance |
| What is fault tolerance | The ability of a system to continue operating even if one or more components fail |
| Why redundancy is important in disaster recovery | Redundancy ensures no single point of failure disrupts an entire system |
Front
What is fault tolerance
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Back
The ability of a system to continue operating even if one or more components fail
Front
What is cloud-based disaster recovery
Back
A strategy leveraging cloud services to store backups and enable recovery operations
Front
Key elements of a disaster recovery plan
Back
Backup systems, recovery procedures, communication plans, and testing
Front
Role of load balancers in high availability
Back
Distributes traffic across multiple servers to prevent overload and ensure availability
Front
Difference between RTO and RPO
Back
RTO is Recovery Time Objective (downtime period); RPO is Recovery Point Objective (data loss window)
Front
What is a cold backup
Back
A backup that is not actively connected and must be manually activated during a recovery situation
Front
Purpose of backups
Back
To ensure critical data is preserved and can be restored in case of a failure or disaster
Front
What is data replication
Back
Copying data across multiple storage systems for high availability and fault tolerance
Front
Difference between synchronous and asynchronous replication
Back
Synchronous replication ensures identical data in real-time; asynchronous may have a lag
Front
Steps in testing a disaster recovery plan
Back
Simulating a failure, validating recovery processes, evaluating gaps, and improving the plan
Front
Primary benefit of multi-region deployments
Back
Ensures high availability and minimizes service disruptions across geographic regions
Front
What is an active-active deployment
Back
Multiple systems actively handle requests, providing redundancy and load balancing
Front
Why redundancy is important in disaster recovery
Back
Redundancy ensures no single point of failure disrupts an entire system
Front
What is a hot standby system
Back
A backup system that is constantly running and ready to take over in case of failure
Front
How often should backups be updated
Back
Depends on RPO requirements; typically daily, hourly, or real-time
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This deck includes strategies for fault tolerance, backup solutions, disaster recovery plans, and multi-region deployments to ensure continuity.