What users are saying about
Top Rated
644 Ratings
62 Ratings
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Score 8.6 out of 100
Top Rated
644 Ratings
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Score 9.1 out of 100

Likelihood to Recommend

Citrix Hypervisor

XenServer is well suited for all scenarios for deployment for a modern infrastructure. The weak link it has is of course for classic physical hardware that has key fobs or other telephony cards which aren't properly supported in a virtualized environment. Even if you have one physical server, virtualizing is the best practice to do.
Kristopher Leslie | TrustRadius Reviewer

VMware ESXi

I do like [VMware] ESXi, but the pricing is hard to swallow for a smaller company. I love the ability to have many options for backup solutions, like Veeam, but the functionality you get for the pricing can be hard to justify. That being said, if you are not virtualized, I definitely recommend something like VMware to get virtual[.]
Tom Blazek | TrustRadius Reviewer

Feature Rating Comparison

Server Virtualization

Citrix Hypervisor
8.7
VMware ESXi
8.9
Virtual machine automated provisioning
Citrix Hypervisor
9.3
VMware ESXi
8.9
Management console
Citrix Hypervisor
6.8
VMware ESXi
8.7
Live virtual machine backup
Citrix Hypervisor
8.4
VMware ESXi
8.8
Live virtual machine migration
Citrix Hypervisor
9.5
VMware ESXi
9.5
Hypervisor-level security
Citrix Hypervisor
9.3
VMware ESXi
8.8

Pros

Citrix Hypervisor

  • Manages upgrades to the pool of hypervisor hosts with relative ease through a console (if licensed).
  • Makes it easy to create machine templates and clones and move them around within the pool of hosts.
  • Handles failures reasonably well through the use of the pool database copied on each host
Anonymous | TrustRadius Reviewer

VMware ESXi

  • High availability/vMotion for hosted VMs is a must-have in any business. No one wants their systems to fail, knowing that the hosted systems are protected and always available is a great stress reliever.
  • Load and resource balancing (with proper licensing) keeps busy servers from consuming all available resources on a given host. DRS and StorageDRS make short work of balancing workloads, I find this a must-have feature.
Anonymous | TrustRadius Reviewer

Cons

Citrix Hypervisor

  • Support - if free is what you need, great support is not what you'll get, keep in mind if support is necessary
  • Upgrades - the upgrade process is buggy and problematic at best
  • Partner Support - if you're looking for a product with multiple parters rolled in, I'd look elsewhere
Anonymous | TrustRadius Reviewer

VMware ESXi

  • The vSphere / vCenter GUI is complex. This is because there is just a crap-top of stuff that ESXi manages, so there is frankly a crap-top of necessary stuff that you have been able to manage in the user interfaces. The learning curve is a little steep. Just because it does a lot of things.
  • Live (powered on) ESXi snapshots of VMs still don't act as SQL backups very well. Snapshots can't backup SQL reliably because of the architecture of SQL and how it interacts with the live resources running on the VM. This is one of the many reasons why taking a snapshot works better when the VM is powered off. This is also why we don't rely only on snapshots to backup our VMs. We also use Veeam and for critical SQL databases we use native SQL backups and in one case, another backup solution (Veritas) that can do SQL better.
Anonymous | TrustRadius Reviewer

Likelihood to Renew

Citrix Hypervisor

Citrix Hypervisor 10.0
Based on 3 answers
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.
Anonymous | TrustRadius Reviewer

VMware ESXi

VMware ESXi 3.8
Based on 2 answers
Me, not likely as my current company doesn't use it nor do I use it at home. However, I don't see my previous company ever switching away from it.
Anonymous | TrustRadius Reviewer

Usability

Citrix Hypervisor

Citrix Hypervisor 6.1
Based on 2 answers
XenServer is quite usable due to the simplicity the management and installation provide for an administrator. The console for management is very intuitive and can easily be installed on any Windows operating system. There is a relatively simple web console that can be implemented as well that enhances the usability to provide service to non-administrators.
Anonymous | TrustRadius Reviewer

VMware ESXi

VMware ESXi 10.0
Based on 1 answer
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.
Anonymous | TrustRadius Reviewer

Reliability and Availability

Citrix Hypervisor

Citrix Hypervisor 5.5
Based on 1 answer
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.
Anonymous | TrustRadius Reviewer

VMware ESXi

No score
No answers yet
No answers on this topic

Performance

Citrix Hypervisor

Citrix Hypervisor 6.4
Based on 1 answer
When running like a top XenServer is a fantastic hypervisor. There is relatively low overhead on the Dom0 so workloads get the most of the resources.
Anonymous | TrustRadius Reviewer

VMware ESXi

No score
No answers yet
No answers on this topic

Support Rating

Citrix Hypervisor

Citrix Hypervisor 8.0
Based on 2 answers
Anytime I had to request support from the Citrix Hypervisor website I had an instant answer and it was straight to the point. I also used the forums available to everyone and always had success from both the technical staff and from the community.
Jean Franco | TrustRadius Reviewer

VMware ESXi

VMware ESXi 8.8
Based on 71 answers
I have had to use support within VMware for ESXi twice in my 13 years of VMware administration. I am not counting times where VMware had to step in due to hardware issues or something similar to that. The two times I have engaged VMware support, I was pleasantly surprised in how they handled my issue and how they were sure everything was resolved for me.
Anonymous | TrustRadius Reviewer

In-Person Training

Citrix Hypervisor

Citrix Hypervisor 2.7
Based on 1 answer
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.
Anonymous | TrustRadius Reviewer

VMware ESXi

No score
No answers yet
No answers on this topic

Online Training

Citrix Hypervisor

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
Anonymous | TrustRadius Reviewer

VMware ESXi

No answers on this topic

Implementation Rating

Citrix Hypervisor

Citrix Hypervisor 7.3
Based on 1 answer
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.
Anonymous | TrustRadius Reviewer

VMware ESXi

No score
No answers yet
No answers on this topic

Alternatives Considered

Citrix Hypervisor

The price is very good. Also, the support from the vendor in the process of implementation and maintenance is very important. Citrix offers this support. The implementation was easy, and gave us the ability to manage a large virtual infrastructure while reducing costs. The virtualization solution from Citrix offers more than other solutions had. Citrix is the best!
Anonymous | TrustRadius Reviewer

VMware ESXi

We did consider and have looked at MS Hyper-V a couple times over the years, but didn't like the perceived complexity (although we were biased by our understanding and use of ESX). We also (again fairly or not) didn't like the idea of MS servers being the underlying architecture with the current status of patching/upgrading.
Anonymous | TrustRadius Reviewer

Scalability

Citrix Hypervisor

Citrix Hypervisor 6.4
Based on 1 answer
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.
Anonymous | TrustRadius Reviewer

VMware ESXi

No score
No answers yet
No answers on this topic

Return on Investment

Citrix Hypervisor

  • We noticed a true ROI within the first 2 years of implementation. The longer hardware refresh cycles save organizations like ours a lot of money each year.
Scott McGee | TrustRadius Reviewer

VMware ESXi

  • As an early adopter of VMWare, we have see a tremendous ROI in our ability to be agile in our deployments
  • VMWare has made our backup simple for areas of our business not covered under our Snap Mirror; things such as our Synology as we use the API to backup VMDKs regularly. This is priceless to us.
  • VMWare has simplified the organization of machine roles which has cut down on man hour required to administrate our systems.
Colby Shores | TrustRadius Reviewer

Pricing Details

Citrix Hypervisor

General

Free Trial
Free/Freemium Version
Premium Consulting/Integration Services
Entry-level set up fee?
No

VMware ESXi

General

Free Trial
Free/Freemium Version
Yes
Premium Consulting/Integration Services
Entry-level set up fee?
No

Rating Summary

Likelihood to Recommend

Citrix Hypervisor
9.3
VMware ESXi
9.2

Likelihood to Renew

Citrix Hypervisor
10.0
VMware ESXi
3.8

Usability

Citrix Hypervisor
6.1
VMware ESXi
10.0

Reliability and Availability

Citrix Hypervisor
5.5
VMware ESXi

Performance

Citrix Hypervisor
6.4
VMware ESXi

Support Rating

Citrix Hypervisor
8.0
VMware ESXi
8.8

In-Person Training

Citrix Hypervisor
2.7
VMware ESXi

Implementation Rating

Citrix Hypervisor
7.3
VMware ESXi

Scalability

Citrix Hypervisor
6.4
VMware ESXi

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