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VMware ESXi

VMware ESXi

Overview

What is VMware ESXi?

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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Recent Reviews

TrustRadius Insights

Powerful Tool for Managing VMs: Users consistently praise VMware ESXi as a powerful tool for managing a large number of virtual machines, …
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VMware ESXI

8 out of 10
April 07, 2022
VMware Esxi is very good product. Which helps people to virtualize the environment or data center. I am using Exsi for last 5 years. …
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A class above the rest

10 out of 10
April 04, 2022
Incentivized
We use ESXi in our organization for our virtualized workloads. ESXi provides a solution for growing organizations that have way too much …
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Awards

Products that are considered exceptional by their customers based on a variety of criteria win TrustRadius awards. Learn more about the types of TrustRadius awards to make the best purchase decision. More about TrustRadius Awards

Popular Features

View all 5 features
  • Live virtual machine migration (115)
    9.3
    93%
  • Management console (127)
    8.8
    88%
  • Virtual machine automated provisioning (115)
    8.5
    85%
  • Hypervisor-level security (116)
    8.3
    83%

Reviewer Pros & Cons

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Pricing

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Unavailable

What is VMware ESXi?

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.

Entry-level set up fee?

  • No setup fee

Offerings

  • Free Trial
  • Free/Freemium Version
  • Premium Consulting/Integration Services

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Alternatives Pricing

What is VMware vSphere?

An enterprise workload platform, vSphere is used to improve the performance for a data center. It is used to boost operational efficiency, supercharge workload performance, and accelerate innovation.

Sorry, this product's description is unavailable

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Product Demos

VMware ESXi 5.1 Install & Configure In Oracle Virtual Box

YouTube
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Features

Server Virtualization

Server virtualization allows multiple operating systems to be run completely independently on a single server

8.7
Avg 8.3
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Product Details

What is VMware ESXi?

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.

ESXi is used to:

  • Consolidate hardware for higher capacity utilization.
  • Increase performance for a competitive edge.
  • Streamline IT administration through centralized management.
  • Reduce CapEx and OpEx.
  • Minimize hardware resources needed to run the hypervisor, boosting efficiency.

VMware ESXi Integrations

VMware ESXi Technical Details

Deployment TypesSoftware as a Service (SaaS), Cloud, or Web-Based
Operating SystemsUnspecified
Mobile ApplicationNo

Frequently Asked Questions

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.

Reviewers rate Live virtual machine migration highest, with a score of 9.3.

The most common users of VMware ESXi are from Mid-sized Companies (51-1,000 employees).
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Comparisons

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Reviews and Ratings

(806)

Community Insights

TrustRadius Insights are summaries of user sentiment data from TrustRadius reviews and, when necessary, 3rd-party data sources. Have feedback on this content? Let us know!

Powerful Tool for Managing VMs: Users consistently praise VMware ESXi as a powerful tool for managing a large number of virtual machines, with easy management of individual VM settings and configurations. Several reviewers have highlighted this aspect, emphasizing how it simplifies their virtualization workflows and enhances overall efficiency.

Cost Reduction Benefits: Many users appreciate the cost reduction benefits offered by VMware ESXi. It minimizes the need for physical servers and reduces storage footprint, resulting in electricity savings. This advantage has been mentioned by a significant number of reviewers, highlighting the financial value that VMware ESXi brings to their organizations.

Support for Various Operating Systems: The support for various operating systems, including Windows and Unix, is considered a significant advantage by users. This feature enables them to host a wide range of applications on VMware ESXi. Multiple reviewers have specifically mentioned this pro, appreciating the flexibility it provides in terms of application deployment and compatibility.

Confusing User Interface: Many users have expressed frustration with the confusing and non-intuitive user interface of VMware ESXi. This has made it challenging for them to perform tasks efficiently, causing unnecessary delays and difficulties in managing their virtual environments.

Stability Issues: Several users have encountered stability issues with VMware ESXi's hypervisor. These issues have resulted in instances of corruption, leading to the need for reinstallations. The instability not only disrupts operations but also poses potential risks to data integrity and system reliability.

High Pricing and Complexity: The pricing of VMware products is often considered a barrier, particularly for smaller businesses. Many users find the deployment process complex and excessive for their needs, requiring significant time and resources to set up properly. This can be overwhelming, especially for organizations with limited IT expertise or budget constraints.

Attribute Ratings

Reviews

(51-75 of 127)
Companies can't remove reviews or game the system. Here's why
Toby Wenzel | TrustRadius Reviewer
Score 10 out of 10
Vetted Review
Verified User
Incentivized
We use ESXi extensively across our entire enterprise. We first deployed it as a server consolidation project, but now it's a critical business function tying two data centers together in separate cities for high availability and disaster recovery.
  • Migrate machines between hosts for high availability.
  • Highly flexible network segmentation.
  • Networking could be simplified.
  • Stay more up to date with OS selection type.
It's well suited for most average workloads, but not ideal for workloads which require large amounts of resources, such as CPU cores and memory.
Chris Saenz | TrustRadius Reviewer
Score 9 out of 10
Vetted Review
Verified User
Incentivized
VMware ESXi is being used to host applications and VMs that support the entire university. ESXi is the primary hypervisor in use in our organization, and has been primary for over 10 years now. It allows us to provide computer and storage resources to our users and departments in an extremely efficient way with many functions that facilitate availability and uptime.
  • vMotion: the ability to move a VM from one place to another, even on disparate storage, works flawlessly and allows us to be agile and maintain performance.
  • PowerCli includes a robust set of PowerShell commands to be able to automate just about anything.
  • Integration with other products and vendors is sometimes complex.
  • Getting the right permissions configurations to allow certain actions is difficult.
VMware ESXi works well in large environments where lots of computing and storage resources need to be shared and constantly reallocated for virtual machines. There are full-featured versions that come at a high cost, but there are also versions that lack some features that may not be needed at a lower cost, and even a free version for small lab environments. If you just need one virtual machine to run periodically, you can use one of the more consumer-grade hypervisors like Workstation, Fusion, or just Virtual Box for free.
January 18, 2020

We recommend VMware ESXi

Score 9 out of 10
Vetted Review
Verified User
Incentivized
VMware ESXi is being used by our organization to host virtual machines, specifically Windows servers. It is just used in our department, however, IT does serve the entire organization. It does exactly what it was designed to do: spread underused physical IT resources across a virtual environment resulting in significant savings.
  • Allows a single set of hardware to service many virtual servers.
  • Great management interface.
  • I haven't used it in a while, but the web client is not that great.
  • I don't really have any complaints, the product just works.
VMware ESXi is well suited for pretty much any IT environment that plans on having multiple servers. I suppose if you are small, have zero IT people, and have zero desire to learn the product, it would be best to skip it.

Score 10 out of 10
Vetted Review
Verified User
Incentivized
We use VMware for almost all of our entire server infrastructure. The only servers we don't have virtualized are backup and video servers. It would be difficult to manage the number of physical servers it would take to server the school district at this point. It saves us a lot of time and money by keeping our physical server infrastructure small and easily manageable.
  • Hugely reduces our need for physical hardware. Our four hosts handle over 130 virtual servers without any problems.
  • It is stable. I have not had an ESXi server crash in years, nor do I really ever have to reboot them for problems. They just run smoothly.
  • The HTML5 web interface has taken a while to be brought to parity with the old thick client, and a few features are sometimes tricky to find.
If you have the proper hardware, and desire stability and support, then ESXi is about at the top of the list. It has a proven reputation, and you can't really be blamed for buying the best.

If your budget is low, and/or you might not have the latest hardware, some of the open source virtualization products might be a better fit.
Score 10 out of 10
Vetted Review
Verified User
Incentivized
We are using VMware ESXi across the whole organization to manage more than 500 servers (Windows and Linux). Working in the research and technology advancement industry, we'll have to address rapid changes/requests flowing from numerous departments, from environmental to health researches. Out of all the main business problems that VMware ESXi addresses in our organization, is the high tolerance data migration capabilities from one Data Centre to another while granting us to manage all our VMs in a timely fashioned manner.
  • Consolidate hardware for higher capacity utilization.
  • Streamline IT administration.
  • Browser based independence with new Flash based UI.
  • Visibility and less information providing for errors.
vMotion is well suited for increased service availability to move the entire state of a running virtual machine between hosts over a dedicated vMotion network to run the VMs with minimal downtime. Other than vMotion, I would highlight a well suited scenario like Datastore usage on disk alarm which sends emails when certain thresholds are reached and describes how to respond to the alarm when it is triggered.
Ashley Davis | TrustRadius Reviewer
Score 9 out of 10
Vetted Review
Verified User
Incentivized
vSphere ESXi is a hypervisor similar to HyperV or Xen, essentially a platform for running many virtual servers on one hardware server or cluster. Primarily it allows you to build out one hardware server on which you virtualize your application and/or role servers. It provides a layer of abstraction between the hardware itself and the application layer that gives you the ability to allocate and reallocate hardware resources and perform actions like cold reboots without having access to a power button or cable.
  • Easy to install.
  • Very powerful.
  • Very picky about what hardware it will install on.
  • Many features locked behind advanced licenses and/or additional products (like vCenter).
All in all, vSphere ESXi is almost always the best solution for virtualization. Hobbyists and homelabbers will appreciate the ability to learn core features at no cost. Small businesses will benefit from consolidating hardware into one server where their domain controller, SQL server, file server, etc. can all still run independently. Medium to large businesses will find a lot of security in scalability and clustering.
Karen Thompson | TrustRadius Reviewer
Score 10 out of 10
Vetted Review
Verified User
Incentivized
VMware ESXi is used to host most servers at my site. It is the company standard for virtualization across my company, at least in North America. It allows us to save costs on hardware and licensing for hosting servers and workstations. We can test development, upgrades, and changes on copies of servers before having to do it on a production/live server. Since we can copy an actual server, we know exactly how it will respond to changes. This helps us save on trouble-shooting, save on server recovery, and so many other things.
  • VMware is not buggy. In IT we have to work around so many things for products to work the way we expect, or the way we want. I have not had to work around things with ESXi. It works as advertised.
  • Sever uptime. Even with hardware failures, and system bugs, VMware keeps our systems up. ESXi has been reliable. I never even think about the OS failing or having issues. That is one less thing to worry about.
  • Server deployment. We can deploy a new server in minutes. Some servers come preconfigured with OVF files where we just tell VMWare to set up a new server and point to the config file and tada there is a new server. We can create templates, where the OS and updates are already installed and we just create a new server from the template in minutes. I actually prefer creating one from scratch, and it only takes a few minutes to choose the hardware and start the OS installation. The longest part is installing the OS. It takes forever at my company to approve spending any money. With VMWare, I can set up new servers without any cost so there is no delay. When I want a server, I set it up. I don't have to wait over a month to design, get approval to order, wait for delivery, then set up the hardware, etc. It is fantastic, and such a time saver.
  • VMWare's Compatibility Guide on-line is excellent. It is very detailed and easy to discover if there will be any hardware issues. When adding or replacing hosts, this is a must-visit site. It has answered every question I've had without having to call support or talk to anyone to analyze if this hardware will match that one. It is a user-friendly site that gives you all the information you need. It has given me a starting point for buying new servers when my company changed its standard on server hardware. I would not have known where to start in configuring a new host, but this site told me what was compatible with what I had and it became an easy task.
  • The new interface for accessing the hosts directly doesn't work well with all browsers. We have restrictions at my company. We use Edge or IE. I had a lot of trouble uploading a file to the datastore because Edge and IE wouldn't play nice. The problem is probably mostly on MS's side, but it would be nice if it could work better with all browsers.
I think VMware ESXi would be well suited for any company that has more than a few servers. If you have two servers, you might as well virtualize them and make your hardware hosts in a VMware environment. It will keep your servers up and running if you have any hardware failures. If you backup your servers, you can quickly and easily restore them after any software crashes. You can test all updates and changes before actually deploying them. I have had to do major reconfiguration of servers, and was unsure of how the server software would respond. You can easily make a copy of a server, launch it and do all the testing you need. If something doesn't work, start over again until you find the solution. It does cost to have the licenses, but you can calculate the cost of downtime if you didn't have it to see if it is worth it for you. If you have a very small environment, it may not be cost-effective, but it will surely improve the time you spend in IT. It would be good to have an idea about how the environment works, but once you learn, support can help with any other issues you have.
Score 9 out of 10
Vetted Review
Verified User
Incentivized
We use it to consolidate our servers and infrastructure. It is being used across the company to better use assets. Ultimately, it is used to take anywhere from four or five systems and consolidate them to 1 host, or on the other extreme 60 plus systems combined down to one host.
  • It manages physical systems and resources.
  • It has a minimal footprint on hosts -- hundreds of megabytes, and very efficient code.
  • I have been using ESX since version 3.5 -- they have regular improvements, so while there has been "missing functionality," I have used it when it was very basic, and they keep adding features that have improved it.
It's suited to Data Centers that are short on space. You are able to consolidate systems anywhere from 5 to 100 to one host. It's also good for Data Centers purchasing new hardware that want to use the space most efficiently. The multi-core systems of today cannot be used effectively without a virtualization product, why waste your peoples time messing with a lower-tier "free" product that requires more management time and is harder on compatibility
It is less appropriate if a company has little money and wants to waste their employees' time -- you are trading VMware $$ to save employee time.
Score 10 out of 10
Vetted Review
Verified User
Incentivized
VMware ESXi is being used by our IT department to deploy servers and services across our entire organization. The software such a game-changer, it's difficult to state how life-changing the software is. On the simple side of things, our IT Department is able to quickly spin up virtual machines at a moments notice. Additionally, ESXi allows us to add additional server resources at a moment's notice, rather than having to go through the cost and process of purchasing new hardware. ESXi allows us to take backup snapshots of servers in the blink of an eye, providing a safety net, unlike anything a physical server can typically do.
  • When combining Citrix with ESXi, we are able to create multiple Citrix servers from one master image.
  • Combined with Veeam, backing up and restoration of virtual machines running on ESXi is painless.
  • I would love to see the licensing cost come down.
I think every organization that has the need for on-premise servers should consider investing in ESXi. The initial cost for getting a proper ESXi environment set up with the servers, storage, and networking can be steep, so organizations that are on shoestring budgets may want to skip virtualization until they're ready for the necessary investments.
Score 9 out of 10
Vetted Review
Verified User
Incentivized
ESXi is currently being used as an integral part of our server farm for hosting Windows and Linux server virtual machines. These servers host applications and services across our organization. We also use it for hosting our virtual desktop environment. This has improved our scalability, server provisioning issues, real estate, and heating/cooling challenges. We are also now able to utilize thin client hardware, saving CAPEX.
  • Resource scheduling
  • Storage efficiency
  • Cost
  • Configuration complexity
VMware excels at virtualizing hardware and allowing you to run multiple applications and network services on minimal hardware platforms. We used it for running servers for just about any purpose, service or application. The only time where we don't is for explicit vendor requirements, proprietary systems and when there is a heavy reliance to consume large amounts of data.
Stefan Semo | TrustRadius Reviewer
Score 10 out of 10
Vetted Review
Verified User
Incentivized
Our organization makes extensive use of a datacenter and has virtualized hundreds of Windows servers on bare metal hardware. These servers work to process logins, provide access to our student information and registration data, hold and manage email, provide shared drives for file exchanges, websites for access by our schools and parents, etc.
  • Very efficient on bare hardware
  • Installs a very small hypervisor footprint
  • The web management interface utilizing HTML 5 is still not fully mature.
  • Could use the ability to clone a host configuration in case the bootable media fails.
VMware ESXi is an excellent product to get the most out of your bare metal hardware. Lots of server manufacturers provide pre-built install images that are optimized for their servers, so that one can take full advantage of the hardware features and interface with the built-in sensors. However, VMware ESXi is a costly product and for small organizations going the Microsoft Hyper-V route will be a big cost savings even tho it is not as robust and efficient.
Ben Moore | TrustRadius Reviewer
Score 10 out of 10
Vetted Review
Verified User
Incentivized
ESXi is utilized to host our entire server infrastructure, as well as our virtual desktop environment. It allows us to perform hardware maintenance and upgrades with zero downtime. We are also able to replicate our infrastructure to our secondary DR location without the need to have identical hardware available and maintain a very low RTO.
  • Server availability.
  • Hardware support.
  • Phone/technical support.
  • Licensing cost.
VMware ESXi is best suited for mid to large enterprises that require maximum uptime. The ability to migrate virtual workloads on-demand, and across different hardware types allows for this. With the high cost of entry, it wouldn't likely be a good fit for most small businesses or those that don't require a high level of uptime.
Kyle Reyes | TrustRadius Reviewer
Score 9 out of 10
Vetted Review
Verified User
Incentivized
At present we are utilizing VMware ESXi across the entire organization. We are utilizing this for our entire Production & Development Windows environment, as well as some Linux implementation. There are also various VM appliances in place via VMware ESXi service various functions within the organization. ESXi allows us a dynamic & "easy" way to manage our infrastructure environment.
  • Implementation of ESXi is extremely straightforward given the correct experience
  • The HA capabilities of ESXi are extremely hard to beat when compared to other Hypervisor options
  • As much as the upgrade path for newer versions of ESXi has improved, there is still room for improvement in the process
  • A better/easier way of handling some network features would be ideal
In any scenario, I've yet to find many reasons where ESXi is not best suited for what is being thrown at it. From small organizations with 2-5 virtual machines to the larger organizations of 1000+ virtual machines it scales extremely well and the features, options, etc. remain the same given correct licensing. The options for HA, again given proper licensing, work extremely well once implemented and have saved myself and others I work with many hours of additional work automatically migrating VMs once a host has failed.

Given the options with the licensing, there are times where something else may have to be reviewed to see if it makes more sense unfortunately to say. The licensing is the only place where ESXi does not scale very well
Brian Munn | TrustRadius Reviewer
Score 9 out of 10
Vetted Review
Verified User
Incentivized
We have implemented VMware ESXi at our primary data center and all of our remote office locations. It is being used across our whole organization and provides a quick and easy way to provision servers as needed. VMware ESXi has consolidated our server footprint from racks of physical servers to only a few VMware ESXi hosts that can support hundreds of virtual servers. Servers can now be provisioned in a matter of minutes rather than days.
  • Quick and accessible to provision servers as needed. Templates can be configured in VMware ESXi.
  • VMware ESXi host software efficiently manages hardware resources so that a single-host server can support multiple virtual servers without causing resource contention.
  • Understanding Resource groups and resource reservations can be difficult and cause issues if not fully understood.
  • I would like to see better performance monitoring capabilities from the web GUI. The current options can be cumbersome, and many still need to be monitored from the command line.
I believe VMware ESXi is an excellent solution for all medium to enterprise-level companies. VMware ESXi does provide options for small business, but depending on features needed, this can be costly. VMware ESXi is the industry standard for virtualized data centers and continues to improve and innovate in the virtualized server space.
Score 10 out of 10
Vetted Review
Verified User
Incentivized
We leverage VMware ESXi as our main hypervisor, spread across multiple hosts. It is used to support a large amount of VM's that we use for day to day business operations, as well as a separate network for our lab. It is utilized by our entire organization because each department is tied to at least a handful of VM's. Our Engineering team manages the environment, and it solves a lot of problems for us. We consistently perform P2V conversions of other equipment and then place it on our virtual infrastructure for easier management and backups. We continue to use it because of the outstanding reliability that we see within the environment, and the ease of patch management that is becoming more and more necessary as technology becomes more readily available.
  • It has more virtual operating system support in real life applications, not just in paper.
  • Migration from previous versions is a breeze. With vCenter, it can even be automated.
  • During the upgrade procedures, problem VIB's are sometimes a pain to find - This was remedied with the release of full HTML though, so this particular problem is only applicable to management via flash.
  • Automatic cleaning of Zombie VDK files would be an incredibly nice feature to have.
ESXi is well suited for every business model out there, that requires flexible management options of multiple servers. It is reliable, saves resources, time and money by allowing you to have one powerful box wearing many hats, instead of multiple cheaper boxes wearing individual hats. This is perfect for allocating resources appropriately as business needs are constantly changing and scaling and usually unpredictable rates. Conversely, ESXi is not suitable for environments that need to maintain computers without a domain, or need for server infrastructure. This is almost non-existent in the current climate, however.
January 10, 2020

VMware is the bomb

Score 9 out of 10
Vetted Review
Verified User
Incentivized
VMWare ESXi is being used organization-wide. We use it to create VMS for some users that need to gain access to applications/tools from home that otherwise would not work. We use it to virtualize the majority of our servers to provide fast configuration changes and high availability, as well as minimal hardware to support.
  • Hardware config changes on the fly
  • High availability
  • Updates on hosts
  • Network configuration
Well suited when you need to have high availability for a server and for quick deployment of a server. Scalability is more effortless with virtual servers as hardware can easily be changed on the fly. Servers that need dedicated resources or specific hardware requirements is a scenario where virtualization is less appropriate.
Score 9 out of 10
Vetted Review
Verified User
Incentivized
VMware ESXi is the global standard for virtualization within the company. It solves the problem of needing to run thousands of physical servers, allowing us to consolidate and run everything on a few physical hosts distributed across several datacentres around the globe. VMware ESXi provides solutions for monitoring and managing these hosts through a single-pane-of-glass product (vCenter) and advanced diagnostics and metrics (vROPs) for an end to end solution.
  • Virtualization
  • Snapshots
  • Management via GUI vs CLI
  • Technical Support
VMware ESXi has an offering for all levels of of the business starting eith their free license all the way through to Enterprise Plus for advanced datacenter, critical workloads.VMware ESXi makes sense for development and production workloads for both backups and testing scenarios where minor r major changes can be snapshotted for quick rollbacks or cloning for longer term changes. VMware ESXi comes with distributed switching for standardizing networking across hosts and baseline configuration checks for consistent host config and self-healing. A solution for every need it licensing and pricing should be discussed with a reseller.
Dan Lepinski | TrustRadius Reviewer
Score 10 out of 10
Vetted Review
Verified User
Incentivized
We use VMware ESXi across our global organization. It's managed by our System Administrators and leveraged by our DevOps teams to help automate business processes. It gives us flexibility and stability for testing. We have multi-ESXi host clusters for high availability. VMware ESXi has allowed us to virtualize most of our physical server infrastructure which has allowed us to work remotely from our data centers. It removes the need to lifecycle 100's of physical servers in favor of a simple lifecycle of a few VMware ESXi hosts.
  • High availability. Clustered VMware ESXi hosts make it easy to take a host out of production.
  • Storage DRS helps balance virtual disks across the cluster.
  • The Flash and HTML5 web interfaces are missing simple sorting features for some lists.
  • Errors messages can be vague at times, which requires searching the community for answers.
VMware ESXi is well suited where you don't have the physical space needed for the number servers you require. If you have applications that require little to no downtime, VMware ESXi can help provide that when clustered with other hosts. VMware ESXi will allow you to snapshot servers prior to major upgrades and changes. This provides a relatively safe fallback option if the upgrade doesn't go well. You can also leverage this to quickly go back to a clean state when testing new software or code.
Andrew Shannon | TrustRadius Reviewer
Score 9 out of 10
Vetted Review
Verified User
Incentivized
Vmware ESXi is being used company-wide at our business. We decided to use it because we had limited space in our server room but need multiple servers for different purposes. So we virtualized the various servers on one piece of server hardware and were able to keep our hardware use low while getting the number of servers we needed.
  • Lets you run multiple virtual servers on one piece of server hardware.
  • Saves you money but minimizing the amount of server hardware you need to buy.
  • VMware ESXi can be hard to update to the newest versions.
  • Hardware compatibility with VMware ESXi can be confusing.
Vmware ESXi is useful when you have limited space in your server room but need multiple servers for different purposes. You can virtualize the various servers on one piece of server hardware and keep your hardware use low while getting the number of servers you need. It's also great when you want to keep your hardware costs low but requires multiple servers in your environment.
Score 9 out of 10
Vetted Review
Verified User
Incentivized
We have been a VMware ESXi shop for well over a decade. We use it across the whole enterprise to run 99% of our environment. There are exceptions where we do run physical servers and/or appliances outside of our virtual environment. By using ESXi, we have been able to stretch the resource requirements for applications across fewer physical hardware points. We have also been able to leverage features and functions like High-Availability and Replication due to using ESXi. It has also made the administration of our environment much easier and centralized.
  • The ability to use a single server and run multiple virtual machines on it has allowed our enterprise to grow it's technology footprint while keeping cost low and administration functionality more simplified.
  • With features like High Availability in ESXi, we have been able to build out a resilient environment that, when issues occur at a hardware level, we can respond and be up and running more quickly than if a single application server failed.
  • ESXi seems to be written very well, and with years of experience behind them, they tend to be leaders and innovators also. With that, there are still areas that they fall short or could improve upon. One of those is the user interface. Having recently moved to a full HTML5 GUI, some of the interactions are not intuitive or lack in the way that the Flash GUI client would handle the request.
  • The Task area needs work. Being able to filter and configure what Task is running or completed should be more user-configurable. The lack of user control does make it hard when you are troubleshooting.
I believe that ESXi is well suited for any and all scenarios. Except those where cost is a major factor. ESXi is not cheap, and with most companies that have a Microsoft EA for Windows Server that also grants them Hyper-V, sometimes the cost isn't justifiable. With that said, ESXi has functions and features that most enterprises need to stay resilient and function at a high level. Where critical services are needed, ESXi is tried and true and can handle everything you throw at it. Even for smaller IT shops, ESXi will provide flexibility and performance that will allow the organization to focus on more important areas, like their customers.
Eric Wyman | TrustRadius Reviewer
Score 7 out of 10
Vetted Review
Verified User
Incentivized
We currently use ESXi to run administrative virtual appliances that are not currently supported by our primary hyper-converged hypervisor. This setup includes three virtual appliances, vCenter to manage two host machines located in two physical locations. The second host is a replication target for the primary host to assure business continuity in a disaster recovery event.
  • ESXi is probably more diverse in the operating systems it supports than other offerings.
  • ESXi has a wide range of third party integrations to focus in on your businesses needs.
  • ESXi is very rigid in its manageability.
  • The management interface is not as simplistic as it could be.
ESXi is well suited for small shops requiring three or fewer hosts, that have a capable and knowledgeable IT department with tight budgets, and minimal technology requirements. It is also suited for very large enterprise entities with large budgets and capable IT staff. Medium-sized businesses that require more than an Essentials Plus license (supports up to three hosts) should consider other available options before deciding to go with ESXi as the licensing costs beyond Essentials Plus are quite extensive.
Score 9 out of 10
Vetted Review
Verified User
Incentivized
My company uses ESXi as the go-to host hypervisor platform of choice when deploying virtual hosts at all of the plants and offices in our network. We use at least one ESXi host at every plant/office and at some sites, we have several.

ESXi's purpose is to act as a host platform for creating, running and managing virtual machines of various types, i.e. servers, user endpoints, appliances, web servers, SQL servers, etc. It's similar to Hyper-V (the Microsoft-branded competition for ESXi) but in my opinion, it has more and better features, overall, although the learning curve for ESXi is both steeper and longer for system admins than most other hypervisors.

Why do we use it? ESXi enables us to host many virtual servers and other endpoints on one physical host machine. This saves on electricity, space, heating, and cooling and improves ease of management of the hosted devices for everything from rebooting them to backing them up to restoring them.

Short answer? For small, medium or large enterprises, ESXi is (still) the best choice for hosting virtual machines. It really doesn't have much legitimate, serious competition in the world of hypervisors.
  • ESXi makes management of hosted machines easy. Everything is in one place. If you have a vCenter (which costs extra) to manage all your ESXi hosts, then everything is truly in one place and there is no need to hop around from management tool to management tool. Al the virtual machines' hardware settings, OS information, storage volume information, backup information, even a remote console just like a KVM ... all of it is in one place.
  • ESXi balances workloads well when using vCenter. Behind the scenes, the vCenter allows an ESXi host to "talk to" other ESXi hosts and when one VM has resources usage that gets past a certain threshold, it can move virtual machines around to balance workloads, even while the machines are running and service users. It's completely invisible to the users, who don't experience latency or any kind of interruptions when their VM is being moved.
  • 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.
ESXi is the right host OS if you want all the features a host OS would normally need to provide AND if you ware willing to pay for the license. It's not cheap. You will also want to pay for VMWare support unless you have an on-staff VMWare admin who really knows their way around ESXi and vSphere / vCenter functions.

If you want a free hypervisor? Then you need to try Hyper-V first to see if it can do everything you think it should be able to do. Hyper-V comes with Windows (both the server and PC flavors) as a role. It can do some basic functions of a host. But it doesn't have all the full capabilities and management features that ESXi hosts do when managed with vSphere / vCenter.
Score 10 out of 10
Vetted Review
Verified User
Incentivized
We have deployed VMWare Vsphere for the production environment of SAP HANA. For SAP HANA, VMWare is the only certified virtualized platform. It addressed our SAP HANA production with HA.
  • Merge multiple LUNs in the Data Store. The Scalability feature is great for storage.
  • Conversion from Other Hyper-Visor.
  • Ease in solution cost.
It is well suited for an enterprise that needs to deploy a virtualized platform for more than 100 virtual machines. However, it needs an organization budget wherever a small business may not invest on IT Infrastructure that much.
Rodney Barnhardt | TrustRadius Reviewer
Score 9 out of 10
Vetted Review
Verified User
Incentivized
VMware ESXi is the product that hosts the majority of our virtual server environment. There are several environments set up at several different locations. Managing the environments is easy through the use of vCenter. Having the ability to quickly adjust the needed resources of each virtual machine, provides us the ability to address performance problems as they arise. It does not matter if the system needs an increase in memory, CPU, or disk space, the changes or new resources can be added in a matter of minutes.
  • Allows quick and easy cloning and customization of new systems.
  • Provides the ability to move or transfer virtual machines between environments.
  • Upgrades could be made easier or more automated.
  • Prefer a thick client back. The web one still seems buggy at times.
Having used or worked with the major hypervisors, my preference is still VMware ESXi over the other products. One of the key features it has that make the management of virtual machine so easy is the ability to right-click on a system to perform numerous tasks on it. Also, the ability to structure the environment all in one view, not only simplifies moving around between environments, but providing role-based access control as needed is very beneficial from a security standpoint.
Score 10 out of 10
Vetted Review
Verified User
Incentivized
VMware ESXi is the of our on-premises server virtualization efforts. VMware ESXi is leveraged by the IT department for all services which are not cloud-ready or for services deemed to stay within our own control. VMware ESXi (with vCenter) allows us to be nimble with deadlines and requirements from various areas within our organization, as we leverage a significant amount of automation to streamline requests.
  • Just works. VMware ESXi is a proven solution with a lot of additional components that provide more value.
  • VMware ESXi is a great platform for new users to learn. Having both GUI and CLI components to manage the host server and subsequent virtual machines allow for click-based admins to get work done, while also providing the avenues for streamlining with automation within CLI based connections.
  • I would love for some of the features only available within the upper tiers of ESXi licensing to be available for Standard licensing purchases. There is a vast difference between free, standard, enterprise plus licensing.
  • The learning curve might be an issue for some users, but can be overcome with the vast amount of resources available. You might have to train to find all of the resources as well.
At our organization, ESXi has been the backbone of our on-site infrastructure since 2013. I have not had an instance where VMware ESXi (with the appropriate add-ons) was not able to fit or exceed what we needed the product to do. We utilize VMware ESXi (enterprise plus) with vCenter, NSX, VSAN, and other products now. Our original deployment was just VMware ESXi connected to fiber channel based storage. Looking back we have gained a lot of features and tools to fix other issues, but ESXi works just as great as it always has for a hypervisor product.
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