If you’ve been looking for a clear, authoritative guide to Azure Site Recovery (ASR) pricing, you’re in the right place. I’m going to walk you through exactly how Microsoft bills for this service, the “hidden” costs many people miss, and how you can budget for it in 2026.
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Azure Site Recovery Pricing
Azure Site Recovery is Microsoft’s native Disaster Recovery as a Service (DRaaS). It ensures your applications stay online during outages by replicating workloads from your primary site to a secondary location.
The Primary Billing Unit: Protected Instances
The most straightforward part of ASR pricing is the Protected Instance fee. Microsoft charges you for every “node” or virtual machine (VM) you protect.
The 31-Day Free Rule
The first 31 days of protection for any instance are free. This is perfect for initial testing or “proof of concept” drills. After day 31, the standard monthly rates apply.
Pricing Summary Table
| Protection Scenario | Monthly Price (Approx.) |
| ASR to Azure (From On-Prem or Azure-to-Azure) | $25.00 per instance |
| ASR to Customer-Owned Sites | $16.00 per instance |
Note: These prices are usually consistent across US regions like East US, West US 2, and Central US, but always check the Azure Pricing Calculator for the latest regional variations.
Breaking Down the “Invisible” Costs
If you only budget $25 per VM, your CFO is going to have questions when the bill arrives. The instance fee is just the “license” to use the service. To build a resilient DR site, you need to account for three other pillars: Storage, Data Transfer, and Compute.
1. Storage Costs (The Replica)
Even if your VMs aren’t “running” in the secondary site, their data has to live somewhere. ASR replicates your disks into Azure Managed Disks.
- Standard HDD/SSD: Best for low-churn workloads.
- Premium SSD: Necessary for high-performance databases (like SQL Server) to ensure low RPO (Recovery Point Objective).
- Snapshots: ASR takes snapshots to create recovery points. You are billed for the storage consumed by these snapshots.
2. Network Egress (The Data Move)
Replicating data between sites involves moving bits across the wire.
- Ingress (Into Azure): Free.
- Egress (Out of Azure): If you are replicating from an Azure region in Northern Virginia to one in California, you will pay for the outbound data transfer. Microsoft uses compression to reduce this cost by roughly 50%, but it’s still a factor for high-churn systems.
3. Compute (The “Only During Disaster” Cost)
This is the beauty of the cloud. You do not pay for the CPU or RAM of your DR VMs while they are in “standby” mode. You only start paying for VM compute (e.g., D-Series or E-Series VMs) during:
- A Test Failover: When you run a drill to make sure your DR plan works.
- An Actual Failover: When a disaster strikes and you “turn on” your systems in the secondary region.
How to Estimate Your Monthly Bill: A Step-by-Step Tutorial
Step 1: Identify Your Instance Count
List your servers. For our example:
- 10 VMs x $25 = $250/month.
Step 2: Calculate Storage Consumption
Assume each VM has 500GB of data. If we use Standard SSDs ($0.09/GB in many US regions):
- 5,000GB (5TB) x $0.09 = $450/month.
- Add roughly 10-15% for snapshots and recovery point retention.
Step 3: Estimate Data Churn (Egress)
If your daily data change rate is 10GB per VM:
- 100GB total churn/day = 3,000GB/month.
- After 50% ASR compression = 1,500GB billed egress.
- At approx. $0.02 per GB (Inter-region) = $30/month.
Step 4: Budget for Testing
I recommend my clients run a “Test Failover” once per quarter. If you run those 10 VMs for 2 hours for a drill:
- Compute cost (e.g., $0.40/hr per VM) x 10 VMs x 2 hours = $8.00.
Total Estimated Monthly Cost: ~$750.00
Optimization Strategies for Businesses
To keep your Azure bill lean, consider these professional tips I use in the field:
- Azure Hybrid Benefit: If you already own Windows Server or SQL Server licenses with Software Assurance, you can apply them to your DR VMs in Azure to save up to 40% on compute costs during a failover.
- Use the Deployment Planner: Before you click “Enable Replication,” run the ASR Deployment Planner. It analyzes your real-world data churn and gives you a precise cost estimate.
- Tiered DR: Not every server needs a 15-minute recovery. Protect your “Tier 1” apps with ASR and use cheaper Azure Backup for your “Tier 3” file servers.
Frequently Asked Questions
Is there a cost for failing back?
Yes. When you “failback” from Azure to your local data center, you will pay for the data egress out of Azure. Since you are moving the changed data back to your site, this can be a significant one-time cost depending on how long you were running in the cloud.
Do I pay for the ASR “Vault”?
The Recovery Services Vault itself doesn’t have a stand-alone fee, but it houses the metadata and orchestration logic that powers your protection.
Are there any upfront costs?
No. Azure Site Recovery is purely consumption-based. There are no “entry fees” or long-term contracts required, though you can save money by committing to Reserved Instances for the compute portion if you expect a long-term failover.
Conclusion
Azure Site Recovery is one of the most cost-effective ways to achieve enterprise-grade disaster recovery without building a second data center. By focusing on your instance count, storage type, and churn rate, you can build a predictable budget that protects your business.
You may also like the following articles:
- What Is Azure Site Recovery?
- How Does Azure Key Vault Work
- Azure Virtual Machine Tutorial
- Azure Site Recovery Vs Azure Backup
I am Rajkishore, and I am a Microsoft Certified IT Consultant. I have over 14 years of experience in Microsoft Azure and AWS, with good experience in Azure Functions, Storage, Virtual Machines, Logic Apps, PowerShell Commands, CLI Commands, Machine Learning, AI, Azure Cognitive Services, DevOps, etc. Not only that, I do have good real-time experience in designing and developing cloud-native data integrations on Azure or AWS, etc. I hope you will learn from these practical Azure tutorials. Read more.
