Low-Cost Disaster recovery with AWS: The Multi-Region Backup and Restore Approach ss.
Cloudairy
26 Dec, 2024
To protect against such events, many organizations opt to use multiple regions in their disaster recovery (DR) strategy. This approach provides resiliency and protection workloads by spreading them across geographically diverse regions.
However, deploying a DR solution for multi regions comes with its own set of challenges.
The Recovery Time Objective (RTO) and The Recovery Point Objective (RPO)
for a backup and restore strategy will be longer than for other DR strategies. This is because the data must be restored from backups. This means that in the event of a disaster, it may take more time to recover data and applications, resulting in longer downtimes and greater data loss.
The following are some of the benefits of using a backup and restore strategy for DR across multiple Regions:
🎯Cost-effective
🎯Easy to implement
🎯Can be used with any type of workload
Here are some of the drawbacks of using a backup and restore strategy for DR across multiple Regions:
🎯Longer RTO and RPO
🎯Increased risk of data loss
🎯Requires manual intervention
The most significant aspect is that the Organizations should carefully consider the benefits and drawbacks of using a backup and restore strategy for DR across multiple Regions before making a decision. If the organization is willing to accept the longer RTO and RPO, then this strategy can be a cost-effective way to protect their data from widespread outages.
Ultimately, the best disaster recovery strategy for an organization will depend on a variety of factors, including its-
★budget
★the criticality of its workloads and
★its tolerance for downtime and data loss.
Introduction
A recovery Point Objective (RPO) is a time-based measurement of the maximum amount of data loss that is tolerable to an organization.
In simpler terms, RPO determines how much data an organization can afford to lose.
For example, if the RPO is set to one hour, it means that in the event of a disaster, the organization can tolerate losing up to one hour’s worth of data. This implies that the backup and recovery processes should be designed to ensure that systems and data are backed up at least every hour.
Source: cloudairy design1
Using services like AWS DataSync, AWS Storage Gateway, and AWS Transfer Family, data is ingested into AWS in batch or streaming patterns. This data lands in an Amazon Simple Storage Service (Amazon S3) bucket, referred to as “raw data.”
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Source: cloudairy design2
A recovery Point Objective (RPO) is a time-based measurement of the maximum amount of data loss that is tolerable to an organization.
In simpler terms, RPO determines how much data an organization can afford to lose.
Introduction2
Low-Cost Disaster recovery with AWS: The Multi-Region Backup and Restore Approach ss.
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