What is Multi-cloud backup – Navigate to high Data Resiliency

What is Multi-cloud backup
The perception of cloud subscriptions being a data security and compliance blanket is a prominent reason why several enterprises are jumping on the bandwagon.  Creating redundant copies across multiple cloud subscriptions has emerged as a preferred data protection measure among several enterprises, but the assessment of an enterprise’s operational overheads is important before adopting the approach.  This blog is an attempt at a more comprehensive understanding of multi-cloud – a favorite data management buzzword.  The sections below also emphasize how multi-cloud backup alone isn’t enough cybersecurity and how Parablu’s BluVault helps achieve optimal storage, data protection, and regulatory compliance.

What is a Multi-cloud backup strategy?

Creating multiple data copies across myriad cloud subscriptions to prevent data losses best defines a multi-cloud backup strategy.  Broadly, the multi-cloud approach can be classified into two categories, namely Homogenous and Heterogenous.  The difference between the two lies in whether multiple subscriptions are chosen from the same vendor or different ones.

To avoid putting eggs (data) in a single basket that could be corrupted beyond recovery, cybersecurity experts adhere to the multi-cloud approach.  The anytime-anywhere, quick data access demand posed by remote workspaces has also led to wide multi-cloud adoption to avoid deadlocks.


A multi-cloud backup strategy may help in redundancy, but the measure alone is insufficient to prevent data losses caused by cyber-attack forms such as ransomware.  In addition, adherence to a multi-cloud environment alone with inadequate data protection measures could lead to heavy penalties during regulatory inspections.

Multi-cloud backup strategy

Hybrid Vs Multi-Cloud Backup Strategy

Pinning better data management hopes on a multi-cloud environment alone without considering other storage combinations may not be a wise move.  A multi-cloud architecture is a combination of several public cloud service models, whereas the hybrid approach bridges an enterprise’s on-premises, local servers with a cloud storage subscription.
The table below illustrates the differences between the hybrid and multi-cloud storage models.

Parablu’s Hybrid Cloud Backup Solution  

Parablu has emerged as an ideal solution partner among several enterprises to realize seamless data management and a transition from a legacy to a cloud backup environment.  Be it storing data on-premises or even combining it with cloud subscriptions, Parablu helps architect a customized data management solution tailored for your enterprise.  It enables you to run backup tenant workloads on your on-premise servers and harness your cloud subscription as a storage target.  By helping enterprises tailor such a hybrid solution, Parablu offers the best of both worlds.
Parablu’s Hybrid Cloud Backup Solution
Built on the tenet of a patented data protection technology, Parablu’s BluVault is an enterprise-class data resiliency solution that helps organizations minimize data loss risks posed by ransomware, insider threats, and even accidental deletion scenarios.  BluVault seamlessly integrates with your existing cloud subscriptions and creates secure containers to store encapsulated, redundant data copies.  It can also be alternatively called a Microsoft 365 backup and recovery solution.
For organizations invested heavily in on-premises infrastructure, running server workloads locally seems to be a sensible move.  Even so, several organizations want to harness the cloud for backup and recovery needs, yet while not fully transitioning to a cloud-based SaaS solution.  BluVault offers enterprises the flexibility to choose between deployment options such as on-premises, cloud, and hybrid cloud.
Here are a few key features of BluVault’s hybrid backup, archiving, and recovery solutions that make it a good fit for legacy enterprises.  It effectively overcomes several disadvantages offered by mere cloud backup solutions.
  • Policy Based Management   

The BluVault helps define data management policies from a user-friendly console effortlessly, eliminating manual intervention.

  • Network Bandwidth Optimization 

Data backup activities often consume significant enterprise bandwidth.  Equipped with an exclusive CPU throttling feature, BluVault ensures data transfer activities impact business continuity the least.

  • Enterprise Audit Trail

Data backup activities must be regulatorily compliant to prevent heavy penalties and other reputational implications.  A BluVault integration means a comprehensive view of all enterprise data protection exercises, fetched through the product’s user-friendly dashboard.  The extracted reports can be shared readily with auditors.

“Parablu’s BluVault harnesses the cloud without an enterprise having to invest in a full-fledged SaaS offering. “

  • De-Duplication and Compression

BluVault optimally utilizes the storage spaces in existing cloud subscriptions by compressing data, making it highly advantageous from an enterprise scalability perspective.

  • Delegated Administration   

The various enterprise data management activities can be delegated to a set of administrators based on parameters such as departments, designations, and so on.  Based on Segregation of Duties paradigm (SOD), the practice prevents an administrator assigned to a particular task from interfering with another. 

Pros and cons of Multi-cloud data strategy


There are advantages and disadvantages to a multi-cloud strategy.  We shall not delve into details of overarching business and infrastructure decisions. Instead, we shall focus on the data security aspects of multi-clouds.

  • Data Privacy

To an extent, cloud backup solutions may assure data safety but not exclusive privacy.  Subscribers are not aware of the encryption practices adopted by cloud vendors and do not receive an exclusive encryption key.  To draw a parallel, the experience is like storing your belongings in a bank vault but not owning an exclusive key to restrict access to your belongings.

  • Increased management difficulty

A multi-cloud data backup approach is opted for by many enterprises for better data protection, especially the prevention of on-premises archival.  However, storing data across multiple cloud models complicates data security since management challenges are increased manifold.

  • More complicated cybersecurity   

Relying on multiple cloud subscriptions means dabbling between the security configurations of various cloud models which could be an additional task for already overburdened cybersecurity teams.  Considering cloud vulnerability to ransomware, insider threats, and other cyberattack forms, more subscriptions mean multiple vectors of attacks.

  • Costs  

Multi-cloud data backup spirals cloud subscription expenses especially while managing data scalability.  Despite creating redundant copies across models, the multi-cloud approach does not guarantee protection from ransomware and insider threats.  Hence enterprises may have to re-consider this approach.

“More cloud subscriptions with little data security measures means a larger ransomware attack surface. “

  • Scalability

Data scalability can be seamlessly managed with the availability of multiple cloud subscriptions.  Pay-as-you-go subscriptions ensure ready storage space availability to accommodate the growing data enormity.

  • Increased resilience  

A multi-cloud environment means an N+1 or N+2 resilience privilege and rapid failover during outage instances.

  • High Availability

Storing redundant data copies across various cloud subscriptions ensures data is readily available to every employee with no deadlocks or bottlenecks.

“A multi-cloud environment means an N+1 or N+2 resilience privilege and rapid failover during outage instances.

Recommended best practices to data across multiple clouds

  • Consolidate the cloud backup vendors  

The fragmentation caused by relying on multiple backup vendors could lead to data silos and instances of failed Service Level Agreements (SLA).  The practice only makes an enterprise more susceptible to ransomware and insider threats.  Consolidation of cloud backup vendors could be a leap forward in achieving better data protection.

  • Eliminate Data Silos

Data silos could be a ticking time bomb that could adversely affect business productivity.  Keeping redundant copies of standalone relational databases and other data forms on multiple storage locations presents several disadvantages.  A prominent one is updating one location and missing out on the other. 

  • Creating Data Lakes

The best resolve to eliminate silos is to create data lakes that hold structured, unstructured, and semi-structured content in blob storage options. S3 buckets, Azure blob storage, and Google cloud storage can be leveraged for this purpose. 

  • Centralize data operations in the cloud

Centralization of data operations and leveraging features such as eDiscovery and cloud disaster recovery could make enterprises more intelligent and resilient.

  • Build data resiliency across the board

Be it on-prem, or multiple clouds, take an integrated approach to manage the data protection lifecycle including incident management, and quick data recovery.  To accomplish this, implement a new-age data resiliency solution that ensures efficient and robust data protection techniques, provides autonomous encryption keys, has rapid recovery, easy data management across users/endpoints with a simple administration interface.  Of course, be sure that it gives you audit-ready reports while meeting global cross-industry regulations.

The BluVault Hybrid-Cloud Advantage

In conclusion, a robust data protection solution that seamlessly straddles on-prem and cloud storage gives a future-proof assurance – a Hybrid-Cloud solution.

BluVault eliminates shunning pre-existing on-premises infrastructure and helps balance workloads across cloud and local servers.  The product offers zero-knowledge privacy, does not incur additional storage costs, and is cloud-agnostic.

BluVault is cloud agnostic and can seamlessly utilize myriad platforms such as AWS, GCP, IBM SoftLayer, and others as storage targets in pure cloud and hybrid scenarios.  BluVault is highly optimized to support on-prem and Microsoft 365 in Azure/OneDrive.

Sign up for a demo to learn more about how BluVault could help achieve cost-effective, secure hybrid backup.