Before you begin to protect any workloads using Azure Site Recovery, allocate sufficient bandwidth, based on your daily data-change rate, to meet your desired recovery point objective (RPO). Be sure to deploy the right number of configuration servers and process servers on-premises. Azure Site Recovery Capacity Planner will analyze your on-premise hypervisor and your internet connectivity to Azure and will advise on the infrastructure you need to protect your workloads using ASR.
The tool provides the following details:
VM eligibility assessment, based on number of disks, disk size, IOPS, churn, boot type (EFI/BIOS), and OS version
Network bandwidth need versus RPO assessment
Estimated network bandwidth that's required for delta replication
Throughput that Site Recovery can get from on-premises to Azure
Number of VMs to batch, based on the estimated bandwidth to complete initial replication in a given amount of time
RPO that can be achieved for a given bandwidth
Impact on the desired RPO if lower bandwidth is provisioned
Azure infrastructure requirements
Storage type (standard or premium storage) requirement for each VM
Total number of standard and premium storage accounts to be set up for replication (Includes cache storage accounts)
Storage-account naming suggestions, based on Storage guidance
Number of Azure cores to be set up before test failover or failover on the subscription
Azure VM-recommended size for each on-premises VM
On-premises infrastructure requirements
Required number of configuration servers and process servers to be deployed on-premises
Estimated disaster recovery cost to Azure
Estimated total disaster recovery cost to Azure: compute, storage, network, and Site Recovery license cost
Detail cost analysis per VM
A report output is shown below:
The ASR Capacity Planner is an essential tool that will give you an understanding of costs, infrastructure and the RPOs you can expect to achieve when using ASR.
We hope this blog post will help your ASR journey!
Many Thanks, the A4S Team!
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