A bare-metal hypervisor that installs directly onto a physical server. With direct access to and control of underlying resources, VMware ESXi partitions hardware to consolidate applications and cut costs.
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XenServer
Score 8.1 out of 10
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XenServer (formerly Citrix Hypervisor) is a virtualization management platform optimized for application, desktop and server virtualization infrastructures.
VMware ESXI is straight forward dependable hypervisor, with some users experience consistent server uptime even during hardware failure and other setbacks. It requires few hardware resources, making a minimal impact on its host machine. Deploying new servers with VMware ESXI is …
Verified User
Professional
Chose VMware ESXi
VMware has been the #1 vendor for virtualization for 10 years, is used in top incorporations, supports almost every software around there, and runs smoothly with every hardware vendor. The con is the price, it's the most expensive solution.
Easy to manage, standard licenses and bundle licenses are customizable, provides a much more stable infrastructure. Cost-effective, Comes with special features like HA, DRS, FT.
Much more reliable and well-integrated than competitors, with a solid central management console. Citrix is having good performance but requires a specific kernel to leverage, HyperV is good only for windows OS.
VMware ESXi is a better solution for medium and small-sized businesses. It does not require any pre-requisites most of the time. Also, VMware offers more RAM per VM than Xenserver (Citrix). And, VMware supports more operating systems whereas Hyper-V supports only a few …
Verified User
Contributor
Chose VMware ESXi
ESXi is becoming industry standard and with range of certifications to excel your skills in VMware [and] open doors to great opportunities. VMware products knowledge space makes it easier to implement, use, and troubleshoot the products specially ESXi as the popularity of this …
Building and operating in a virtual environment would be impossible without a reliable and efficient virtualization platform, such as VMware and Hyper-V. Before deciding which platform to choose for conducting your business operations, consider the differences in VMware and Hype…
vSphere has been in the virtualization game for a long time. It's hard to overlook this fact as you compare ESXi to Microsoft's less robust HyperV, Proxmox's immaturity and lack of polish. VMware has made clear that virtualization is its blood and has done a lot to push …
ESXi is hands down the winner when compared to its competitors, in terms of technical capability. VMware has maintained its leadership role in virtualization technology. Hypervisors from Microsoft, Oracle, Citrix pales in every way when compared to ESXi. Have you ever heard …
VMware ESXi has always felt more like an industry standard. VMware ESXi comes with great support through their contact methods, their knowledge base articles, and the massive online community of users who have been using and experimenting with VMware ESXi for years. VMware's …
Comparing ESXi to the other big three hypervisors, VMWare ultimately comes out on top. Initially, we built our server farm on top of XenServer for a few years, since it was stable and everyone was already somewhat familiar with it. However, given the recent drama with XenServer …
ESXi outperforms both Citrix and MS in just about every aspect of virtualization. Plus, coupled with vCenter, the management of the hypervisor cluster is second to none.
We used Oracle VM VirtualBox for sandbox and local testing. It is not a HyperVisor, but a virtualization platform. It requires a Host OS to install on. When we implemented VMWare ESXi, the cost of Citrix Hypervisor was more, and Hyper-V was still in its infancy. Ultimately the …
The interface was simpler for me understand since I don't have a heavy background with Linux. VMWare has double the amount of virutal CPUs than Citrix Hypervisor. VMware also has a host limit of 120 virtual machines vs Citrix Hypervisor's 75 virtual machines which allows for …
I would say VMware is much easier to pick up compared to Citrix or Hyper-V. The interface is straightforward while still giving you the options to dive deep into the configuration if required.
ESXi has much better performance in real-time than Hyper-V. Performance with XenServer is comparable, however, ESXi has more functionality on offer and more mature monitoring services.
VMware is known to be the market leader for server virtualization for a reason. The other products are always trying to catch up and mimic the same features as ESXi. And now, with vSAN and NSX, vSphere is light years ahead of the competition.
There are other hypervisors that are more eficient than Xenserver, but it is necessary to spend some money to buy them. If your demand is to compute processing, Xenserver permits you to create good environments to do this. If you need to integrate the hypervisor with other …
Feature for feature they are neck and neck. I have used Hyper-V 2012 and 2016, VMware ESXi and XenServer evenly. XenServer is a fast install, good documentation, with enterprise features out the box that compare or exceed what VMWare offered with a higher cost of entry.
VMware seems to be the standard and is more widely accepted. However, Citrix Hypervisor, is easily learned and cheaper. We have also used VirtualBox to offer up ideas for other free products. VirtualBox seems to be easier for end users who just want simple VMs and not …
Because we utilize Citrix for our VDI this solution made the most sense moving forward. Citrix Hypervisor was designed to work with Citrix VDI solutions out of the box.
XenServer like the similar product I've used in the hypervisor market stacks up well in regards to compatibility with virtual machine [operating systems]. It is also capable of allowing for large, powerful VMs to be run upon it. The main selection of XenServer in environments …
If you're looking for the industry standard in server virtualization, I would recommend ESXi. After decades of expertise in the field, VMware continues to provide a strong product, production-ready, with an easy-to-learn interface that allows for quick management along with less costly upfront onboarding and training. Grab the free personal-use license and install in your homelab to start!
It can be really helpful & useful if we are using Citrix Hypervisor with other provisioning tools. Here are some specific scenarios where Citrix Hypervisor (formerly Citrix XenServer) is well-suited: Server Consolidation, Virtual Desktops, Disaster Recovery, Development & Testing Environments. On the other hand, there are some scenarios where Citrix Hypervisor may be less appropriate: Small-scale Deployments, Highly Heterogeneous Environments, and Limited Virtualization Requirements.
Resource management. The automatic load balancing works very well to ensure no host is taxed disproportionately compared to the others.
Templates and cloning. It is very easy to set up a template and spin up new servers based on a specific setup. This makes server management very streamlined.
VM management. The vSphere interface is very easy to use and navigate. Everything is responsive and it works when you need it to. The options are also robust while also being arranged in a straightforward manner.
VMware ESXi can improve on the UI that is installed on the bare metal machine. The menus can be hard to navigate when looking for simple configuration items.
VMware ESXi can improve on the stability of their overall hypervisor. There have been a few times we had to reinstall due to corruption of VMware ESXi.
I would like to see VMware ESXi do better at adding more standard free features in their consumer version of VMware ESXi. For example, having the ability to back up virtual machines is good practice and something that would be very nice if offered in their free version.
Adding or presenting additional storage to the host can often be a task that is far more involved than competitive products.
The product can require reboots more frequently than competitors due to the DOM kernel getting "hung up".
Sometimes when a virtual machine is deleted it still leaves behind orphaned vdisks.
Recovering from the loss of a host can sometimes cause virtual machines to require lengthy command prompt scripting to fix so they can be powered back on from another host.
It is critical to our business, what started out as a way to do certain functions, it has now become core to ensuring our product is available to our customers and reducing our costs to operate and reduce our recovery time and provisioning servers. Their support is great and the costs to renew is reasonable.
With the knowledge and usage of solutions from VMware and Microsoft offering more compelling cloud integrated options it makes it more compelling in many environments which I consult. XenServer is a good product and fits the bill in many smaller environments but as clients look to the cloud or a hybrid cloud it can in some cases make it a bit more difficult.
The interface is fairly intuitive for most things, and the areas that are a little less obvious usually have fantastic documentation in the online knowledgebase. In 3-4 years of managing our ESXi hosts, I think that I have only opened 4-5 support cases for things that I could not figure out myself or find answers to on the website.
XenServer is a good product in its use and probably free if you have the right Citrix licenses already. However, it does require specific knowledge to manage, which makes it harder to manage if you don't have that knowledge in house.
Without the need to patch the servers with bug fixes and enhancements we whave not experienced any downtime with VMware issues. Even the bug fixes and updates do not cause of downtime as we just migrate the servers to the opposite node and update the one and then move servers back. Very simple and painless.
It's been a little problematic in the past at larger VDI deployments requiring a bit more care and feeding than other vendors. But the latest releases (6.5.x) have brought about huge improvements in the stability and availability.
We do not notice any difference between a physical and virtual server running the same workload. In fact we can scale quicker with the virtual server than we can with the physical.
I can't say enough good about VMware's support team. To an individual they take ownership of the case, provide thorough answers, and follow up regularly. On one occasion, a problem we experienced with NSX Endpoint was escalated to development for a permanent resolution after a workaround was found. In my experience, most companies would have tried to find a way to close a case like that instead of taking it all the way. Most importantly, when production is down and every second counts, they VMware teams understand that urgency and treat your issue as if it were the only one they had to deal with. You can't ask for better.
The staff I've worked with are very knowledgeable or able to get a very well articulated and capable support team member on the phone or helping them if necessary and they always want to ensure the best experience possible for you on the platform. The ability for the support team to reach out to hardware vendors for assistance is a nice plus too.
Part of a training for certification to become a trainer for Citrix included an in-person training with a Master CCI. The XenServer training at this time was pretty simplified due to the product primarily being installed however you did have to work with it and mildly configure the system.
Haven't given it a real go with any online training however there are some options out there. I have taught a course following Citrix material for XenDesktop which leverages XenServer and it is pre-built so not the best for XenServer specifically for installation but configuration is mildly touched on
Jsut read and follow anything your storage provider may require to allow the integration of VMware with storage operations, outside of that VMware jsut works.
Ensure you review the HCL (hardware compatibility list) and reach out to the hardware vendors to ensure they support the platform and in case they have documentation that can be followed for the implementation. Also ensure the prerequisites are completed prior to implementation so that as few unexpected delays occur as you can control.
As long as you're using Nutanix AOS on Nutanix hardware and are paying their software support fees, AOS is a valid competitor to VMware and can save money due to not needing a license and having their server management system built into the base host management system. If you aren't using Nutanix hardware, however, VMWare is in most cases the best way to go. I cannot comment on HyperV, but most IT people I know either use it because they have to (most) or they like it better (not many).
Feature for feature they are neck and neck. I have used Hyper-V 2012 and 2016, VMware ESXi and XenServer evenly. XenServer is a fast install, good documentation, with enterprise features out the box that compare or exceed what VMWare offered with a higher cost of entry.
it has been fair and easy to understand. I know VMware is looking at wanting to change from CPU to core pricing so we will see what that looks like when it happens.
We started out with a two-server cluster and adding a third or fourth is very straightforward and simple with no issues. You just need to be aware of the size of your Vcenter Server to handle the workload, but still the resources needed is very minimal
The servers latest versions have made massive improvements to scalability. But from past experience there have been issues when running workloads for extended periods of time without reboot on the hosts. I would need to run similar workloads on the 6.5 release which has changed much of the bottlenecks or issues so I'd imagine its far more capable now, Perhaps able to stand near the best in the market.
VMWare ESXi licensing is affordable for our business - and the licensing model is simplistic. Not like that of Microsoft with having to keep track of server licenses and CAL licenses for users.
VMWare ESXi also has hardware-monitoring built-in, so that further saves us money from having to be spent with another vendor.
As much as I hate the saying "a single pane of glass" does fit for this product. You can manage your servers, monitor hardware status, create and export backup snapshots, manage virtual NICs, connect to various storage devices. We're very happy with this product.
Xenserver is easy to learn. We paid for support only for installation and deployment in the first three years, and now our team has the knowledge to solve most problems.
Low CAPEX if you have a team that uses open source software day by day.
But paid support is necessary to solve critical problems. The open source community is not enough. Actually, we have difficulty solving some bugs without paying for support.
Medium OPEX if you have a team that uses open source software day by day.
