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VMware ESXi vs XCP-ng: A Comprehensive Hypervisor Comparison

When it comes to server virtualization, two prominent hypervisors are often considered: VMware ESXi and XCP-ng. Both platforms offer robust solutions for creating and managing virtual machines (VMs) but differ in several key areas, including cost, performance, features, usability, and support. Understanding these differences is crucial for organizations looking to optimize their virtual infrastructure.

What is VMware ESXi?

VMware created VMware ESXi as part of its virtualization solution. ESXI is known for its excellent performance, scalability, and efficiency, making it a favorite among enterprises. This bare-metal hypervisor installs directly onto the physical server, dividing its resources into several virtual machines. This direct installation makes it easy to manage hardware resources effectively.

Key Features and Functionality

VMware offers several industry-standard features, including;

  • High Performance ESXi is designed to interact directly with the host hardware, delivering exceptional performance. Its lightweight architecture makes it ideal for running virtual machines efficiently. ESXi also minimizes resource overhead while maximizing physical resource utilization.
  • Resource Management With ESXi, users can allocate CPU, memory, and storage resources to individual virtual machines as needed. It also uses advanced tools like Distributed Power Management and Dynamic Resource Scheduler to enhance system efficiency.
  • Security ESXi protects virtual environments with features like secure boot, VM encryption, and role-based access control (RBAC). These measures help safeguard against unauthorized access and data breaches.
  • Fault Tolerance and High Availability: ESXi ensures uninterrupted access to virtual machines, even during hardware failures. Fault Tolerance (FT) stores a live replica of the virtual machine for continuous availability. If the current one fails, the High Availability (HA) automatically restarts affected virtual machines on another host.
  • Scalability ESXi can be seamlessly integrated with VMware solutions like vSphere and vCenter, enabling the management of thousands of virtual machines across multiple physical hosts. This scalability makes it well-suited for large, complex environments.

What is XCP-ng?

XCP-ng stands for Xen Cloud Platform—Next Generation. It is an open-source virtualization platform built on an Xen hypervisor. XCP-ng was created as an alternative to Citrix XenServer, solving the problems it faced. It offers a comprehensive range of tools for virtual environment management. As an open-source project, there are no licensing fees, making it a great choice for enterprises and small businesses.

Key Features and Functionality

XCP-ng comes with several modern features designed to enhance virtualization capabilities, including;

  • Xen Orchestra Integration

XCP-ng works seamlessly with Xen Orchestra, a web-based, user-friendly platform for managing VMs, storage, and networking. It offers free and premium versions, both of which offer advanced features and professional support.

  • High Availability (HA)

XCP-ng offers high-availability clustering. This feature ensures that if a host dies, the virtual machines on that server will be moved to another host.

  • Storage Support

XCP-ng works with various storage options, such as Fibre Channel, NFS, and iSCSI. It also integrates with distributed storage systems like Ceph, allowing users to create strong and scalable storage solutions to handle their virtualized workloads.

  • Live Migration

XCP-ng uses live migration to transfer VMs across hosts when transferring virtual machines. This method ensures that there’s load balancing and reduced downtime during maintenance

  • Networking Features

XCP-ng offers advanced networking tools like virtual LAN (VLAN), network bonding, and Open vSwitch (OVS) integration. These features make it easy to build complex network setups that prioritize security, performance, and reliability.

What to Consider Before Choosing Between VMware ESXi and XCP-ng

An IT expert looking to choose between VMware ESXi and XCP-ng has a lot to consider, including;

Cost and Licensing

One of the most significant differences between VMware ESXi and XCP-ng is their cost structures. VMware ESXi operates on a proprietary licensing model, which is more expensive than XCP-ng. It, however, has a free version with limitations. The version provides fewer features, no centralized management, and a total of eight vCPUs per VM. Thus, advanced features like vMotion, High Availability, and Distributed Resource Scheduler (DRS) are only available through paid licenses.

On the other hand, XCP-ng is an open-source hypervisor based on XenServer. It is a cost-effective alternative as there are no licensing fees. This open-source nature allows organizations to utilize a full-featured hypervisor without the financial burden of proprietary solutions.

Performance

Performance is another key factor for hypervisors. Fortunately, both VMware ESXi and XCP-ng are type-1 hypervisors. This means they work directly on the host’s hardware. Type-1 hypervisors generally provide superior performance compared to type-2 hypervisors. When both hypervisor performances were compared, they were nearly the same. However, some users have reported that, in certain scenarios, ESXi outperforms XCP-ng, while in others, XCP-ng holds the advantage. For instance, ESXi was faster in a series of tests in about 60% of the cases. Meanwhile, XCP-ng led in the remaining 40%. Thus, the better choice could depend on the circumstances, so always consider the specific workloads and configurations when checking performance. They could have varying performances based on the particular applications and environments in use.

Features and Functionality

Both hypervisors offer a range of features designed to enhance virtualization capabilities, but there are notable differences:

  • High Availability (HA): VMware’s HA feature allows you to automatically restart VMs on another host when a host fails, minimizing downtime. XCP-ng also offers HA capabilities. Similarly, if a host fails in XCP-ng, the affected VMs are rebooted on another host, resulting in short downtime during the reboot process.
  • Management Tools: VMware ESXi is managed through the vCenter Server, a comprehensive tool that provides centralized management of virtual environments and a paid product requiring a separate license. XCP-ng utilizes Xen Orchestra, a web-based open-source interface. It enables straightforward management of VMs, storage, and networking. Xen Orchestra offers both free and premium versions, with the latter providing enhanced features and professional support options.
  • Backup Solutions: Both platforms support various backup solutions. VMware ESXi integrates with different third-party backup tools and offers snapshot-based backups and replication features. XCP-ng, with Xen Orchestra, provides built-in backup solutions, including full and delta backups. These solutions help to cater to different backup and recovery needs.In this field

    Storware Backup and Recovery can support data protection (disaster recovery, cyber resiliency, business continuity) for both hypervisors, within one license. Here are the example videos showing how Storware works with each platform:

Backup and Recovery for VMware

Backup and Recovery for XCP-ng

Usability

Usability is an important factor, especially for organizations without dedicated IT teams. VMware ESXi has an in-built web-based HTML5 GUI that allows straightforward single-host management without additional installations. This intuitive interface simplifies tasks such as building and managing VMs, configuring virtual switches, and handling data stores.

In contrast, XCP-ng doesn’t have a local web GUI for host management. Instead, users must deploy Xen Orchestra (XOA), which offers a rich feature set but makes the initial setup complex. However, once configured, Xen Orchestra provides a comprehensive management interface that is as good as VMware’s.

Support and Community

Support options differ significantly between the two platforms:

  • VMware ESXi: VMware offers a high degree of professional support and a well-established knowledge base as a commercial product. It also caters to clients that require reliable and timely assistance.
  • XCP-ng: As an open-source project, XCP-ng relies on a growing community for support. Vendors like Vates render professional services, but the ecosystem is still maturing compared to VMware’s long-standing presence in the market.

Conclusion

Choosing between VMware ESXi and XCP-ng depends on various factors, including budget constraints, specific workload requirements, desired features, and the level of support preferred. Organizations seeking a cost-effective, open-source solution with support may choose XCP-ng. However, those seeking comprehensive enterprise support and advanced features might opt for VMdetermine ESXi. You must evaluate your unique needs and resources to determine which is best.

A data recovery plan (DRP) is a structured approach that describes how an organization will respond quickly to resume activities after a disaster that disrupts the usual flow of activities. A vital part of your DRP is recovering lost data.  

Virtualization helps you protect your data online through virtual data recovery (VDR). VDR is the creation of a virtual copy of an organization’s data in a virtual environment to ensure a quick bounce back to normalcy following an IT disaster.

While having a virtual data recovery plan is good, you must also provide an off-site backup for a wholesome data recovery plan that can adequately prevent permanent data loss. An off-premises backup location provides an extra security layer in the event of data loss. Thus, you shouldn’t leave this out when planning your data recovery process.

Let’s try to look at this issue in a general way, knowing how diverse and capacious the issue of virtualization and disaster recovery is. Certainly, implementing a dedicated data protection solution will help streamline data protection and disaster recovery processes.

Benefits of Virtualization for Disaster Recovery

Virtualization plays a crucial role in disaster recovery. Its ability to create a digital version of your hardware offers a backup in the event of a disaster. Here are some benefits of virtualization for disaster recovery.

  • Recover Data From Any Hardware

If your hardware fails, you can recover data from it through virtualization. You can access your virtual desktop from any hardware, allowing you to recover your information quickly. Thus, you can save time and prevent data loss during disasters.

  • Backup and Restore Full Images

With virtualization, your server’s files will be stored in a single image file. Restoring the image file during data recovery requires you to duplicate and restore it. Thus, you can effectively store your files and recover them when needed.

  • Copy Data to a Backup Site

Your organization’s backups must have at least one extra copy stored off-site. This off-premise backup protects your data against loss during natural disasters, hardware failure, and power outages. Data recovery will help automatically copy and transfer files virtually to the off-site storage occasions.

  • Reduce Downtime

There’s little to no downtime when a disaster event occurs. You can quickly restore the data from the virtual machines. So recovery can happen within seconds to minutes instead of an hour, saving vital time for your organization.

  • Test Disaster Recovery Plans

Virtualization can help you test your disaster recovery plans to see if they are fail-proof. Hence, you can test and analyze what format works for your business, ensuring you can predict a disaster’s aftermath.

  • Reduce Hardware Needs

Since virtualization works online, it reduces the hardware resources you need to upscale. With only a few hardware, you can access multiple virtual machines simultaneously. This leads to a smaller workload and lower operation costs.

  • Cost Effective

Generally, virtualization helps to reduce the cost of funding virtual disaster recovery time. With reduced use of hardware and quicker recovery time, the data recovery cost is reduced, decreasing the potential loss caused by disasters.

Data Recovery Strategies for Virtualization

Below are some practical strategies to help build a robust data recovery plan for your organization’s virtual environment:

  • Backup and Replication

Create regular backups of your virtual machines that will be stored in a different location—for instance, an external drive or a cloud service. You can also create replicas and copies of your virtual machines that are synchronized with the original. You can switch from the original to a replica in case of failure.

  • Snapshot and Restore

Snapshots capture your data at specific preset moments, creating memories of them. Restore points also capture data but include all information changes after the last snapshot. You can use snapshot and restore to recover the previous state of your data before the data loss or corruption.

  • Encryption and Authentication

Encryption and authentication are essential security measures that work in tandem to safeguard data from unauthorized access. By employing both methods, you establish robust layers of defense. This, thereby, fortifies your data against potential cyber threats, ultimately mitigating the risks associated with corruption and theft.

Conclusion

Creating a disaster recovery plan is crucial for every organization as it helps prevent permanent data loss in the event of a disaster, leading to data loss or corruption. Virtualization helps in data recovery by creating a virtual copy of your hardware that can be accessed after a disaster.

Virtualization reduces downtime, helps to recover data from the hardware, reduces hardware needs, and facilitates testing your data recovery plans. However, you must note that virtual data recovery is only a part of a failproof disaster recovery plan. You must make provisions for an off-premises backup site for more robust protection.

About Storware
Storware is a backup software producer with over 10 years of experience in the backup world. Storware Backup and Recovery is an enterprise-grade, agent-less solution that caters to various data environments. It supports virtual machines, containers, storage providers, Microsoft 365, and applications running on-premises or in the cloud. Thanks to its small footprint, seamless integration into your existing IT infrastructure, storage, or enterprise backup providers is effortless.

About Version 2 Limited
Version 2 Digital is one of the most dynamic IT companies in Asia. The company distributes a wide range of IT products across various areas including cyber security, cloud, data protection, end points, infrastructures, system monitoring, storage, networking, business productivity and communication products.

Through an extensive network of channels, point of sales, resellers, and partnership companies, Version 2 offers quality products and services which are highly acclaimed in the market. Its customers cover a wide spectrum which include Global 1000 enterprises, regional listed companies, different vertical industries, public utilities, Government, a vast number of successful SMEs, and consumers in various Asian cities.

Why IT Leaders Are Seeking VMware Alternatives

Scale Computing CEO Series: VMware Alternatives

 

The ripple effects of the VMware acquisition by Broadcom at the close of 2023 continues to be felt across the IT world, sparking uncertainty among customers and partners alike. From rising costs to discontinued product lines and shifting roadmaps, many organizations are now reevaluating their reliance on VMware. If you’ve been thinking about upgrading your systems, simplifying your IT infrastructure, and saving significant management time, you’re not alone.

In a new video, Scale Computing CEO Jeff Ready, sheds some light on how Scale Computing offers a practical and cost-effective VMware alternative for those who feel trapped in a cycle of escalating costs and operational headaches.

As Jeff notes, many customers have built their VMware-based systems incrementally over time, leading to a tangled “ball of twine” that feels increasingly convoluted, costly, and hard to manage. While the thought of migrating to a new solution can seem daunting, it’s also an opportunity to embrace a simpler, more streamlined future. Scale Computing’s solutions are purpose-built to simplify IT operations, enabling organizations to reduce management overhead by up to 90%.

One of the key concerns for IT leaders exploring VMware alternatives is compatibility. “Can this alternative run my workloads?” is often the first question. Scale Computing answers this with confidence, offering a seamless migration that doesn’t take years of effort. Jeff highlights how the SC//Platform effortlessly integrates with existing systems, from backups to security tools, minimizing disruption and easing the path to modernization.

But the benefits go beyond just functionality. Organizations that make the switch to Scale Computing experience transformative changes in how IT is managed. With a system designed from the ground up to minimize complexity, IT teams are freed from the endless cycle of ‘bolted- on’ fixes and managing siloed systems. As Jeff explains in the video, customers frequently return after a few months to share how Scale Computing’s solutions have “changed their life as an IT person.”

If you’re ready to simplify, reduce costs, and embrace a modernized way to manage your infrastructure, there’s never been a better time to explore your options. Watch the full video to hear directly from Jeff and learn how Scale Computing can transform your IT operations today.

About Scale Computing
Scale Computing is a leader in edge computing, virtualization, and hyperconverged solutions. Scale Computing HC3 software eliminates the need for traditional virtualization software, disaster recovery software, servers, and shared storage, replacing these with a fully integrated, highly available system for running applications. Using patented HyperCore™ technology, the HC3 self-healing platform automatically identifies, mitigates, and corrects infrastructure problems in real-time, enabling applications to achieve maximum uptime. When ease-of-use, high availability, and TCO matter, Scale Computing HC3 is the ideal infrastructure platform. Read what our customers have to say on Gartner Peer Insights, Spiceworks, TechValidate and TrustRadius.

About Version 2 Limited
Version 2 Digital is one of the most dynamic IT companies in Asia. The company distributes a wide range of IT products across various areas including cyber security, cloud, data protection, end points, infrastructures, system monitoring, storage, networking, business productivity and communication products.

Through an extensive network of channels, point of sales, resellers, and partnership companies, Version 2 offers quality products and services which are highly acclaimed in the market. Its customers cover a wide spectrum which include Global 1000 enterprises, regional listed companies, different vertical industries, public utilities, Government, a vast number of successful SMEs, and consumers in various Asian cities.

Your data, safe and sound: How CloudM Backup helps you sleep at night

Data breaches are rising, costing businesses an average of $4.88M per incident. With a growing cybersecurity skills gap, IT teams are turning to automated solutions like CloudM Backup to stay ahead of threats.

A smarter way to safeguard your user data

One way to keep your data safe is by ensuring that you have a rigorous yet flexible backup process in place. Frequent backups enable you to restore lost or corrupt data and ensure that your teams can continue working. 

This is where CloudM Backup comes in. CloudM Backup ensures your business recovers quickly from data loss, minimizing downtime and disruption. Here are some of the key features that keep your emails, drive items and calendar data safe.

Quickly identify and remove gaps in your data protection setup

CloudM Backup’s modern, insightful dashboard gives you full visibility of the state of your backups and associated policies. See at a glance which users aren’t protected and swiftly amend your backup policies to ensure all vital business data is secured.

Image: Access the dashboard to identify which users are not covered by an existing backup policy.

Use notifications to stay up to date

Set up email notifications for any element of your backup process and get updates delivered straight into your inbox. This is particularly useful in situations where manual intervention may be needed, such as if a backup fails multiple times.

Image: Set up granular notifications so you know when your processes aren’t running smoothly.

 

Beyond backups: Advanced security features you can rely on

Backup has a host of further security features that may be less obvious but no less important than dashboards and notifications. These include:

Recover deleted emails

Restore lost messages from previous backups, ensuring vital conversations do not get lost.

Avoid vendor lock-in

Stay in control of your data by storing backups in your AWS or GCP environment.

Customize backup frequency (coming soon)

Automatically adjust backup schedules based on team or location-specific policies.

 

Getting started is quick and easy

CloudM Backup simplifies data protection with powerful yet user-friendly features. From hero features such as its modern dashboard which delivers key insights at a glance and customizable notifications delivered straight to your inbox, to powerful background functionality, you can rely on CloudM Backup to keep your vital business data safe. It doesn’t take long to get started, either: You can set up reliable yet flexible backup policies in as little as 5 steps. Book a demo now to find out more.

With CloudM Backup, you can backup the following Calendar data:

  • Events and meetings: We back up and restore meeting which include meeting links, including Zoom links. We do not back up events without meeting links.

Yes, you can back up recurring meetings with CloudM Backup.

We do not back up Tasks at the moment.

In Google Calendar, attachments are a link to a Drive item. We will back up the item if the user’s Drive is also being backed up and restore the meeting with the link included. The Drive file itself can be backed up separately if required.

These will be backed up as event attendees. Handling of edge cases, such as when a user tries to restore an event and the resource has since become occupied, will be handled by your Workspace administrator.

The default frequency for backing up Calendar is 8 hours.

Please check our knowledge base for detailed information on how to restore a backup of Google Calendar.

About Version 2 Limited
Version 2 Digital is one of the most dynamic IT companies in Asia. The company distributes a wide range of IT products across various areas including cyber security, cloud, data protection, end points, infrastructures, system monitoring, storage, networking, business productivity and communication products.

Through an extensive network of channels, point of sales, resellers, and partnership companies, Version 2 offers quality products and services which are highly acclaimed in the market. Its customers cover a wide spectrum which include Global 1000 enterprises, regional listed companies, different vertical industries, public utilities, Government, a vast number of successful SMEs, and consumers in various Asian cities.

About CloudM
CloudM is an award-winning SaaS company whose humble beginnings in Manchester have grown into a global business in just a few short years.

Our team of tech-driven innovators have designed a SaaS data management platform for you to get the most from your digital workspace. Whether it’s Microsoft 365, Google Workspace or other SaaS applications, CloudM drives your business through a simple, easy-to-use interface, helping you to work smarter, not harder.

By automating time-consuming tasks like IT admin, onboarding & offboarding, archiving and migrations, the CloudM platform takes care of the day-to-day, allowing you to focus on the big picture.

With over 35,000 customers including the likes of Spotify, Netflix and Uber, our all-in-one platform is putting office life on auto-pilot, saving you time, stress and money.

Scalability: Building for the future by starting right today

From SaaS platforms supporting millions of users to APIs enabling seamless integrations, scalability is foundational for businesses to thrive in 2025 and beyond. Yet, achieving true scalability remains elusive for many organizations. The challenges lie not only in the tools we use but in the very architecture of the systems we build.

The scalability bottleneck: APIs under strain

APIs are the glue that binds modern digital ecosystems, enabling systems to communicate and work together. However, many APIs today face significant bottlenecks. For instance, with SaaS service APIs that vendors offer up for general use, we see everything from explicit throttling (e.g., “come back later” type responses) to slow responses or outright intermittent failures. These common issues limit their usefulness, and as businesses grow and integration demands increase, these bottlenecks become critical barriers. For us to move forward with better and tighter integrations between systems, we need the APIs to scale to higher volume use. An API that can’t handle high volumes is effectively pointless. The value of an API lies in its reliability and capacity — usable not just occasionally or under ideal conditions but consistently and at scale. Without this, businesses are left with “just enough” functionality that falls short of real-world demands.

Is the root cause architectural complexity?

Probably. It’s difficult to know what the limiting factors are from the outside, but it appears that one of the biggest challenges to scalability is that some services — for one reason or another, which I’ll get into later — are built on an architecture that is difficult to scale to higher volume use. The truth is that many services today are built on architectures that were never designed to handle the scale they now face. (More on this in the next section.) For example, a service dependent on a central database might experience diminishing returns when additional API front-end nodes are introduced. The database becomes a choke point — an architectural bottleneck that cannot be overcome by merely adding resources. Elastic scaling promises easy solutions, but in reality, scaling a service often requires more than increasing hardware resources. It demands a foundational shift in how the system is designed. Retrofitting a system to scale can be akin to replacing the foundation of a house while living in it —technically possible but fraught with challenges and runaway costs.

The high cost of shortcuts

In the rush to bring products to market, startups often face immense pressure to deliver something they can showcase to stakeholders, investors, or potential customers. To meet these demands, it’s tempting to cobble together systems that “mostly fit.” This approach allows them to quickly demonstrate the viability of their idea and gain early traction. However, this expediency often comes at a significant long-term cost. The patchwork nature of such systems creates an underlying complexity that is difficult — and sometimes impossible — to scale effectively. Early success can mask these architectural flaws, and as the product gains market traction, securing business approval for a complete re-architecture becomes increasingly difficult. After all, why invest in fixing something that appears to be working? The irony is that while these shortcuts may save time initially, they often result in delays, frustrations, and limitations in the long run. Organizations find themselves unable to “throw hardware at the problem,” as the underlying complexity prevents effective scaling. Importantly for the fast-moving startups, investors are not blind to this either — technical due diligence is undertaken precisely to uncover if the proverbial castle is built on sand.

The way forward: Simplicity in architecture

To build scalable systems, simplicity must be the guiding principle. It must be built on the “simplest possible” architecture. As the saying goes, “All computers wait at the same speed.” No amount of hardware can compensate for a poorly designed architecture. Simplicity not only reduces costs and increases reliability but also lays the groundwork for systems that can grow seamlessly with demand. This requires a shift in industry mindset. Businesses and engineers alike must prioritize proper engineering and thoughtful architecture from the outset. While the benefits of this approach may not be immediately apparent, they will pay dividends over the lifecycle of the system.

A call to action: Invest in good design

The best way to solve scalability challenges is to avoid creating them in the first place. This begins in the architectural phase of development. Engineers must approach design with a critical eye, recognizing that complexity is the enemy of scalability. Businesses must be willing to invest in thoughtful engineering, even if it means slowing down initial development to build systems that will last. “Slow down to go fast” may be a platitude, but it holds true when it comes to scalability. While easy to say, it requires hard decisions and deliberate effort to design scalable systems from the outset. Thoughtfully built systems not only handle current demands but will scale seamlessly as needs evolve.

Conclusion: Building for a scalable future

Scalability is not just a technical challenge — it’s a strategic imperative. Organizations that succeed in 2025 and beyond will be those that prioritize simplicity, invest in thoughtful architecture, and resist the temptation to cut corners. By addressing scalability challenges head-on, businesses can build systems that not only meet today’s needs but are ready to grow with the demands of tomorrow. The future of scalability is in our hands: Let’s design it deliberately.

About Keepit
At Keepit, we believe in a digital future where all software is delivered as a service. Keepit’s mission is to protect data in the cloud Keepit is a software company specializing in Cloud-to-Cloud data backup and recovery. Deriving from +20 year experience in building best-in-class data protection and hosting services, Keepit is pioneering the way to secure and protect cloud data at scale.

About Version 2 Limited
Version 2 Digital is one of the most dynamic IT companies in Asia. The company distributes a wide range of IT products across various areas including cyber security, cloud, data protection, end points, infrastructures, system monitoring, storage, networking, business productivity and communication products.

Through an extensive network of channels, point of sales, resellers, and partnership companies, Version 2 offers quality products and services which are highly acclaimed in the market. Its customers cover a wide spectrum which include Global 1000 enterprises, regional listed companies, different vertical industries, public utilities, Government, a vast number of successful SMEs, and consumers in various Asian cities.