Disaster Recovery as a Service (DRaaS):
A cloud computing service that allows the user to back up their data and assets by providing third party-services, and in the case of failover, it includes data recovery. This backing up data and IT infrastructure are known as Disaster Recovery as a Service (DRaaS). The organization does not have to arrange all the resources independently; it relies entirely on the DRaaS provider’s services and resources.
Working of Disaster Recovery as a Service:
DRaaS provides disaster recovery by backing up the data and assets in virtual locations. This whole process includes the following key steps:
The assets and the data on the primary site are replicated, and that replicated data is transferred to the remote and virtual environment established by the DRaaS. The replication process must include the physical and virtual servers. To avoid data loss at the time of failover, DRaaS should take snapshots of the data and assets time by time.
The speed is the primary and significant factor at the failover time because it determines the amount of data loss and recovery.
After the failover, it is mandatory to restart the replication process as soon as the completion of failback.
Need of Disaster Recovery as a Service:
Followings are the main five reasons for an organization or enterprise to go for DRaaS:
- Security-related attacks
- On-premises power outages
- Network or hardware failures
- IT system, software, or application errors
- On-premises data center failures
Due to the reason mentioned above, every organization and business needs DRaaS. DRaaS provides the best data backup and recovery services at the time of the disaster.
Disaster Recovery as a Service Model:
There are mainly three models for DRaaS available to the customer organization, such as:
- Assisted Disaster Recovery as a Service:
This type of DRaaS model fits the organization’s customized software and applications. The Assisted DRaaS is responsible for providing IT expertise and services to optimize and enhance the disaster recovery plan.
According to the requirement, the customer independently or dependently implies the disaster recovery plan, assisted DRaaS.
- Managed Disaster Recovery as a Service:
The Managed DRaas model is the best for an organization that lacks IT expertise and time. In managed DRaaS, Disaster Recovery service providers are fully responsible for resources, services, management, optimization, and infrastructure and application changes. The customer is not responsible for any Data Recovery plan or benefits.
- Self-service Disaster Recovery as a Service:
If your organization has experienced and specialized IT expertise and disaster recovery personnel, then the self-service DRaaS model is the best fit. It is the most reasonable and affordable model as the customer has to manage, optimize, monitor, test, examine, and plan the disaster recovery itself. The customer has to host IT infrastructure, hardware, software, and other resources on its own.
Pros and Cons of DRaaS:
DRaaS has its pros and cons simultaneously. Advantages and disadvantages of the DRaaS include the followings:
Pros of DRaaS are as followings:
No duplication of storage:
While availing DRaaS services, there is no duplication of storage hardware in the data recovery center and primary data center.
Relaxed in-house IT staff:
The IT staff is free of backup and data recovery worries and can focus on other responsibilities.
No need for the secondary data center:
DRaaS excludes the need for the secondary data center for recovery and backup purposes.
Provision of Data Recovery Capabilities:
It provides data recovery capable expertise and specialists to establish an effective and enhanced data recovery plan.
Disadvantages of DRaaS includes the following:
Rely on service providers:
The most significant disadvantage of DRaaS is that the customer has to rely on the service providers at failover or disaster.
Trust the disaster recovery services:
The organization must trust the DRaaS service providers to implement the infrastructure and disaster recovery plan. The organization has to entrust the DRaaS service providers to meet the organization’s recovery time objective and recovery point objective.
Potential performance issues:
Cloud applications and software may experience performance and deployment issues.
There might be any bandwidth challenge while replicating data and assets.
Key considerations to choose DRaaS:
While selecting the DRaaS, the followings are the key considerations to keep in mind for any organization or enterprise:
- Access controls
- Assistance by the DRaaS
- Reliability of the DRaaS
Cost of DRaaS:
The cost depends on the model you select. DRaaS is very reasonable and cost-effective. Your organization has to pay for the services monthly. If any organization does not invest in Disaster Recovery, they might lose up to $ 100,000 per hour of downtime.
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