Last updated: October 2026
Cross-cloud disaster recovery keeps a recoverable copy of your workloads with a second cloud provider, so a provider-wide outage or a compromised account can’t reach your production data and its backup at the same time. The copy sits under different credentials and a different control plane, which a second region inside the same cloud can’t give you.
With N2W, the second provider is Azure. N2W archives AWS backups into an Azure storage account you own, and can put a lease on every object in that copy so it can’t be modified or deleted. To recover, N2W restores EC2 instances from a storage repository straight into Azure as bootable VMs, root volumes included, for Ubuntu 22 and 24 guests. Windows instances come back as data disks, and the path runs one way, AWS to Azure.
The Traditional Method of Disaster Recovery Within the Cloud
Modern DR strategies are based on a solid foundation established by the traditional techniques utilized by leading cloud service providers like Amazon Web Services (AWS) and Microsoft Azure. Let’s explore these traditional techniques in greater depth.
Disaster Recovery in AWS
The approach to disaster recovery in AWS primarily revolves around the ability to recover applications quickly and efficiently. If an AWS customer encounters a situation where they need to recover apps and data, AWS offers the capability to launch recovery instances within mere minutes.
This ensures minimal downtime and service disruption. Furthermore, these instances can be based on the most recent server state, or if the situation warrants, from a previous point in time of the user’s choosing.
RTO and RPO based on Storage Tier
The Recovery Time Objective (RTO) and Recovery Point Objective (RPO) — key metrics defining the acceptable time and data loss during the recovery process — can vary based on where the snapshots of the data reside. For example, you can calculate RTO and RPO based on storage tiers such as:
- Standard EBS block storage: Designed for workloads requiring excellent efficiency and low latency. This storage tier has faster RTO and RPO times and is suitable for mission-critical applications.
- Amazon S3: Highly scalable, durable, and secure object storage that provides a balance between performance and cost. RTO and RPO metrics might vary slightly compared to EBS block storage.
- Glacier: It is an archival storage solution projected for long-term data archiving with retrieval times ranging from minutes to hours. As such, RTOs and RPOs are typically higher for data in Glacier.
Cross-Region DR
AWS recognizes that geographic redundancy is crucial for true disaster recovery. Hence, they offer cross-region disaster recovery for enterprises. This means that if your primary region faces a disaster or a service interruption, you can failover to an entirely separate region. This ensures continued data availability and application uptime.
Disaster Recovery in Azure
Microsoft Azure, another giant in the cloud space, provides a similar disaster recovery mechanism, albeit with its own terminologies and nuances.
Azure Site Recovery
Azure Site Recovery (ASR) is the flagship solution for disaster recovery in Azure. It plays a crucial role in replicating virtual machine (VM) workloads from one main location to another. This means that your applications and data remain accessible even if the primary site goes down.
Failover Mechanism
With ASR, you can failover to a secondary location, wherein the replicated data becomes live and applications remain accessible. This minimizes disruptions to users and business processes.
Both AWS and Azure have their place in the cloud ecosystem with mature and efficient disaster recovery strategies. While the terminologies and processes might differ slightly, the core objective remains the same. As we usher into a new era of cloud computing, cross-cloud disaster recovery solutions will further redefine these strategies.
| Cross-region DR | Cross-cloud DR | |
|---|---|---|
| Blast radius | One provider, several regions | Two providers |
| Credentials | Same account and IAM | Separate accounts, separate IAM |
| Control plane | Shared | Separate |
| Survives a provider-wide outage | No | Yes |
| Survives a compromised account | Only if the copy sits in a different account | Yes |
| Recovery target | Another region in the same cloud | The other cloud, on the supported path |
| Constraint with N2W | None beyond normal region rules | AWS to Azure, one direction. Ubuntu 22 and 24 boot; Windows recovers as a data disk |
Why Cross-Region DR Within Just One Cloud Provider is Inefficient
While many enterprises rely on cross-region DR within a single cloud provider as their go-to strategy, this method has its limitations. In this section, we’ll probe into why solely relying on cross-region DR in a single cloud provider might not be the most efficient approach.
Potential Capacity Issues in Secondary Regions
When enterprises create their disaster recovery plans, they often select a primary region for normal operations and a secondary region to kick in when the primary region fails. However, there’s a fundamental flaw in this strategy.
Insufficient Compute and Storage
If a regional failure occurs at a single site, it can result in a sudden surge of demand in the secondary (backup) region. If many businesses simultaneously initiate their DR plans and move their workloads to this secondary region, it can become overwhelmed. The region may not have the capacity to manage the sudden influx, leading to insufficient compute and storage resources. This can result in reduced performance, slower data retrieval times, or even outages.
Interdependence of Cloud Regions
Cloud regions, while geographically dispersed, aren’t always as independent as one might assume.
- Replication Doesn’t Eliminate Human Error: Take, for example, AWS services like EBS (Elastic Block Store) snapshots or RDS (Relational Database Service) databases. These can be replicated in another region to strengthen redundancy and enhance security. However, this replication is not immune to human error. If someone makes a mistake when entering data, that error gets replicated. This renders the read replica inaccurate and undermines the very purpose of having a DR strategy in place.
- Vulnerability to Accidental Deletions: Another pressing concern is the potential for accidental deletion. Imagine a scenario where an operator inadvertently deletes an entire application. If a company only employs a single cloud provider and relies on intra-provider replication, that deletion gets mirrored across regions. Without an external backup or a multi-cloud DR strategy, the application could be lost permanently.
While cross-region DR within a single cloud provider offers a level of redundancy, it isn’t a silver bullet. Companies must be aware of the constraints and potential pitfalls. As the proverb goes, “Don’t put all your eggs in one basket.” Diversifying disaster recovery strategies, possibly by using multiple cloud providers or combining on-premises and cloud solutions, can provide a more comprehensive and fail-safe approach.
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Benefits of Cross-Cloud Recovery
By using the strengths of multiple cloud providers, businesses can reinforce their DR and business continuity (BC) plans. Below we explore some benefits of adopting a cross-cloud disaster recovery approach.
Optimal Utilization of Best Features of Each Cloud Provider
Cloud providers in the market today come with their unique sets of features and offerings. This allows for flexibility, scalability, and revenue potential. It also allows:
- Avoidance of Vendor Lock-in: Cross-cloud disaster recovery allows organizations to be more agile, as they are not tied down to the intricacies and limitations of one cloud provider. This ensures flexibility in decision-making and technological adaptation.
- Best of Both Worlds: For instance, an enterprise might be inclined towards Azure for its exceptional compute power and storage capacity. Concurrently, they might find AWS’s processing prowess more aligned with their requirements. Cross-cloud disaster recovery enables harnessing the strengths of both, optimizing resource usage and enhancing service delivery.
Assured Business Continuity and Disaster Recovery
In the digital age, uninterrupted access to data and services is non-negotiable. By spreading data across different regions and platforms, the risk of a single point of failure significantly diminishes. This geographical and platform-based diversification is a basic requirement of a sound DR plan.
When data and apps are stored across multiple cloud environments, the speed of recovery from disasters is exponentially faster. This ensures minimal disruptions, safeguarding a company’s reputation and customer trust.
Enhanced Security Through Cross-Cloud Recovery
Security remains a top concern for enterprises in the digital realm. Adopting a cross-cloud recovery model lets IT teams, as they can build customized solutions without the fear of producing isolated data repositories or accidentally creating vulnerabilities.
Different cloud providers bring unique security mechanisms to the table. Using multiple clouds allows enterprises to benefit from varied encryption techniques, threat detection mechanisms, and response strategies.
With data mirrored across multiple environments, the impact of security incidents like breaches is weakened. The multi-cloud approach ensures that even if one environment is compromised, data integrity is maintained elsewhere, offering an added layer of protection.
Meeting Compliance and Regulatory Standards
For certain sectors, compliance isn’t just best practice; it’s mandatory. This is especially true for organizations in the public and financial sectors, as there are strict regulations around data protection. A multi-cloud approach naturally provides diversified storage, making it easier to adhere to standards that mandate data redundancy and fail-safe recovery mechanisms.
While single-cloud solutions may have been the norm in the early days of cloud computing, the future undoubtedly belongs to cross-cloud recovery. It combines flexibility with resilience, ensuring that organizations can deliver uninterrupted services while maintaining data integrity and security.
How does cross-cloud disaster recovery actually work?
Cross-cloud recovery means your backup lives with a different provider, under different credentials, on a different control plane, so an account compromise or a provider outage cannot reach both copies. That is the part most vendors describe and few make concrete.
With N2W it works like this. You run one console, in whichever cloud you installed it in, and the other clouds join it as accounts. An existing customer adding a second cloud installs nothing and adds an account. There is no second deployment and no per-cloud console.
Which workloads can you recover into another cloud?
For recovery itself, N2W restores AWS volume backups directly into Azure, including root volumes, so the workload boots in the other cloud rather than arriving as loose data. That path is AWS to Azure only, in one direction, and it covers Ubuntu 22 and 24 guests; Windows recovers as a data disk.
Cross-cloud recovery runs from a storage repository, so your policy needs to write backups to one (S3 on the AWS side) first. A plain EBS snapshot can’t be restored into Azure directly. The same path works for migration testing: boot a copy of an AWS workload in Azure and check it before you need it.
Challenges in the Adoption and Practicality of Cross-Cloud DR
While utilizing resources across multiple cloud providers offers several advantages, it also presents some unique hurdles for businesses. Here’s a deeper dive into these challenges.
Is cross-cloud DR worth the complexity?
The multi-cloud approach inherently adds layers of complexity to data and application management.
Data Management Issues
As enterprises distribute data sets across multiple cloud environments, the ability to track, synchronize, and manage data becomes exponentially more challenging. Merging data from diverse sources into unified data lakes or repositories becomes a huge task. The varying data models and formats across platforms further complicates this process.
Security and Lifecycle Management
Different cloud providers often come with distinct security protocols and data management practices. Aligning these diverse practices to create a cohesive security and data lifecycle strategy can be daunting.
Gaps in Expertise
- Cloud Proficiency: Managing a multi-cloud environment necessitates a high degree of expertise. It’s challenging to find professionals with comprehensive knowledge of multiple cloud platforms.
- Learning Curve for IT and DevOps: The teams must familiarize themselves with the distinct methodologies, provisioning policies, and governance structures of each cloud provider. This can stretch resources and extend deployment timelines.
What does cross-cloud disaster recovery cost?
The financial implications of cross-cloud DR can be tricky to navigate for a variety of reasons.
Cost Estimation Challenges
Operating across several cloud environments means managing and analyzing costs for each provider. This makes it labor-intensive to obtain a consolidated view of cloud expenditures.
Pricing Model Limitations
While pay-as-you-go pricing models are designed for scalability and flexibility, using this across multiple clouds can be intricate. In a multi-cloud environment, expanding resources either up or down according to demand is more complicated and expensive.
Cross-Cloud Capabilities of N2W
In an increasingly complex and diverse cloud landscape, businesses are constantly on the lookout for tools that simplify cross-cloud operations while ensuring data security and cost-effectiveness. N2W is leading the charge in this domain with its latest cross-cloud capabilities, which we outline below.
Archival of AWS Backups into Azure
N2W has introduced the pivotal feature of archiving AWS backups directly into Azure. This is a core part of a business’ disaster recovery and data archival strategy, offering a bridge between the two leading cloud providers.
Enhanced Data Protection
Snapshot Archival
With N2W, organizations can archive snapshots from AWS instances and volumes directly into an Azure storage account.
- Data Lifecycle Management (DLM): your backup policy moves snapshots from AWS into an Azure storage repository on its own schedule, and the archived copy can be made immutable.
- Immutability: when you enable immutable backups on the Azure storage repository, N2W puts a lease on every object it stores there. A leased object can’t be deleted or modified until the lease is cancelled.
Comprehensive Backup Management
N2W’s approach to AWS backup management is holistic.
- Automated Transition: AWS backups are first moved to Azure storage, following which they are transitioned to colder Azure storage tiers, and then rendered immutable.
- User-Friendly Interface: N2W’s centralized dashboard offers businesses a single pane of glass to view and manage their backups.
- Multi-Layered Security: Even if AWS is compromised, data remains safe in Azure. Beyond the inherent security of shifting to a different cloud provider, the added layer of data immutability ensures that an attacker who gets into AWS still can’t alter or delete the leased copy in Azure, which sits under separate Azure credentials.
Meeting GRC Standards
A backup copy held by a second provider supports governance, risk, and compliance (GRC) requirements that call for redundancy and proven recoverability. Whether you meet a given standard still depends on how you configure both environments; N2W supplies the copy, the lock and the recovery path.
Cost Optimization
While neither AWS nor Azure levies ingress charges, businesses need to be wary of egress fees incurred with both platforms. For instance, transferring 500 GB out of Azure’s US East Region would cost $43.07, while the same operation out of AWS’ S3 would be $44.91. While this might seem like a marginal difference, it underscores the importance of understanding and optimizing cross-cloud operations.
Based on this cost structure, restoring data in Azure would be more cost-effective, highlighting the type of strategic decisions businesses can make with the insights provided by N2W.
By bridging the gap between AWS and Azure, N2W offers cost-effective, multi-layered data protection.
Cloud computing has evolved over time through continuous innovation
Traditional disaster recovery methods within single cloud environments like AWS or Azure may have provided stability, but they also highlighted gaps from region-specific vulnerabilities. To address these gaps, cross-cloud disaster recovery emerges as the timely answer. This approach allows businesses to harness the combined strengths of multiple cloud providers, in turn boosting resilience and ensuring that operations are spread across different regions and platforms to reduce points of failure.
However, transitioning to a cross-cloud paradigm is not without its challenges. From the intricacies of multi-platform data management to the unpredictability of costs, there are certainly significant hurdles to navigate. Fortunately, N2W is a solution designed to bridge these gaps.
By streamlining AWS backup archival into Azure and adding immutability, N2W serves both as a protective shield and a cost-optimized solution for businesses. As the cloud landscape continues to evolve, tools like N2W are pivotal for organizations aiming to remain resilient and forward-focused in the digital age.
If you’re eager to lead in the cross-cloud era, discover how N2W can bolster your disaster recovery strategy, ensuring you’re equipped for the challenges and opportunities ahead.
