VMware ESXi Reviews

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Score 9.2 out of 100

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Reviews (76-89 of 89)

Shane Trapp | TrustRadius Reviewer
January 13, 2016

VMware Rocks!

Score 10 out of 10
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90% of our workloads run on top of a VMware Hypervisor. We currently have over 450 host and 4500 VM's.
  • Cost effective utilization of compute.
  • Ability to move workloads around easily.
  • Automated and scripted deployments of VMs.
  • Some of the reporting tools are difficult to use and [I] would love to see more pre-canned options in the VRealize suite.
  • Would love to see the ability to have redundant Vcenters.
  • Would like to see them move a little quicker with the private cloud options.
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Anonymous | TrustRadius Reviewer
Score 9 out of 10
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It is used across the entire organization and solves providing temporary servers, right-sizing the servers (physical servers are more limited in their RAM and CPU configurations. A single physical server can host dozens of virtual server VMs, all with different operating systems installed. It also abstracts the [hardware] from the server which enables a VM to be exported to a different building or location or even a different company. Virtualizing large servers can reduce cooling, power, ups, cables, physical space and racks, noise, support. Many processes like antivirus, backups, boot ups, upgrades can be more centralized.
  • Support of so many operating systems including various Windows and Unix, including many variations.
  • API PowerCLI scripting can help automated enterprise tasks to scale
  • Virtualizing physical servers provides much higher ROI compared to non-virtualized servers running a single OS
  • ESXi loads in ram on the server & it's small so the hypervisor uses very little of the hosts resources
  • The client has been the most common complaint about ESXi. It took 4 years to complete the web client and as soon as it was finished, they announced it would be replaced by the HTML client. frustratingly, the html client is incomplete which puts users in the same predicament as the previous 4 years.
  • Converter could be better integrated into ESXi (client) which would make creating VMs (p2v) much easier and would also prompt VMware to continue to update and improve converter (which has not had many improvements or updates since being released.
  • Maintenance mode should be much quicker when ESXi is used with vSAN.
The bigger the server, the better the ROI with ESXi since more CPU and RAM mean more or bigger VMs, whereas smaller servers are a poor choice fo ESXixi. For example, ESXi can install on a 2 core 8GB server but there would be no CPU or RAM for VMs. On the other end, a super large server could become an issue since it might have 100s of VMs which would need to migrate or be powered off anytime the host was updated. Those VMs would also need to restart elsewhere during a failure.
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Anonymous | TrustRadius Reviewer
Score 10 out of 10
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We have been using VMware ESX/ESXi for about 9 years now and have been fully all virtual servers the last 4-5 years and it has worked great from day one. We were using VMware long before many other local businesses and long before other organizations in the Mid-Atlantic region. VMware has simplified backup, recovery and disaster recovery. Long gone are the days of restoring physical servers and bare metal restores. It just works.
  • Virtual Hardware & Drivers for a very stable environment, low overhead, fast.
  • Peace of mind backups and recovery.
  • Maximize host resource usage, reduce physical footprint.
  • If you don't monitor VM host hardware usage, too many virtual guests can overload your hosts and slow down all virtual guests running on that server.
  • A little costly to start up, recommended multiple hosts, shared storage for recovery in case of server failure/maintenance.
  • You won't want to go back to physical.
Not recommended for a beginner of a small home/business. It is recommended to have an experienced person assist with configuration, installation, backups, etc.
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Anonymous | TrustRadius Reviewer
Score 8 out of 10
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VMware ESXi is being used throughout our whole organization, across our entire server environment. When we initially moved to VMware, it addressed the issue of having old, outdated hardware and allowed us to move to a new virtual platform. We were able to consolidate our infrastructure from 20 physical servers to 3 servers through the use of VMware.
  • VMware allows us to save time by installing servers much quicker than before, through the use of templates.
  • VMware vCenter controls all aspects of our server environment through one console and provides detailed hardware information.
  • The ability to move virtual servers from one host to another in a matter of minutes, which allows us to install server upgrades with no downtime.
  • Licensing costs are high, and are done by CPU, rather than per server host. As a result, this can add up pretty quickly with a large server environment.
  • Learning curve may be higher for those people that have not used a virtual platform.
  • Some applications have reduced performance in a virtual environment, and run better on physical hardware.
VMware would be well suited in an environment where you have at least 10 servers (email, database, file servers, web). This would make sense because you can consolidate a larger physical infrastructure into 2 or 3 VMware hosts and increase reliability as well through redundancy.

VMware would be less appropriate if a business only has several servers, because they will spend more on licensing and will not appreciate all the aspects that VMware provides (redundancy, disaster recovery, system upgrades).
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Anonymous | TrustRadius Reviewer
May 27, 2016

VMware ESXi rocks

Score 7 out of 10
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We use ESXi 5.5 primarily for server virtualization. We also host a XenApp 7.8 farm in our production cluster. We have a production datacenter cluster, a cluster for our Dev/DR site and a single host site at a remote facility used to host a domain controller, ras server and print server. It addresses th problem of server sprawl and consolidates about 120 virtual machines (at our production datacenter) into a single Lenovo Flex chassis, saving at least 3 42U racks of floorspace and the power and environmentals to support them.
  • It efficiently manages cpu and memory resources on a host among dozens of virtual machines. It also provide very efficient and reliable disk I/O
  • It automates the build out of servers, saving hours over racking and building a physical server, and enabling consistent images on every server..
  • It facilitates quick and easy snapshots of servers runtime state in order to test patches or application updates and quickly roll back in the event of failures.
  • vCenter Virtual appliance is klunky and doesn't respond quickly.
  • It's database can fill up its partition and crash the server unexpectedly, resulting in an unstable and unmanageable ESXi environment
  • The vCenter web interface is not very useful and is missing several critical features, making the vim client essential for day to day use.
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Anonymous | TrustRadius Reviewer
May 13, 2016

ESXi in a Nutshell

Score 10 out of 10
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ESXi is our hypervisor platform of choice. We use it to maximize hardware utilization, add high availability to our systems, and make management and deployment of systems faster and easier. Through the use of vCenter, we manage many ESXi hosts, which each run many systems. This has allowed us to consolidate our hardware footprint while maintaining a high number of systems.
  • Live migrations of running VMs between hosts to limit downtime
  • Low performance impact from virtualization layer on running VMs
  • Management tools/vCenter make managing multiple VMs easy
  • Guest OS support
  • Cost to get all the features you want, e.g. Live Migration
  • Fat client required to manage individual hosts (getting better with some web consoles currently in development by VMware Labs)
  • Not as robust without a vCenter implementation
ESXi is best suited for large corporate environments where there will be multiple ESXi servers managed via vCenter. This allows all the benefits of virtualization to shine. It is also effective for lab environments, where the free version can be utilized since high availability and performance are not as critical. It is not as suitable for a small deployment, such as a single server at a remote office, due to the single point of failure it would create.
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Anonymous | TrustRadius Reviewer
April 13, 2016

VMware, it just works

Score 7 out of 10
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We virtualized 95% of our servers on VMware ESXi and were also using it to offer virtual desktops to nearly everyone in the company.
  • It did a good job hosting our SQL Servers and we didn't see any real difference between servers directly on the hardware and virtualized.
  • It made it very easy to move servers between farms and/or servers for load balancing.
  • Early versions demonstrated multiple problems which precluded using it due to performance issues but they've all been overcome so be sure you're on the lastest VMware offerings.
I would still shy away from it at the very high end for servers 64+ processors and terabytes of memory, but that might just be because I don't have experience with it at those loads.
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Anonymous | TrustRadius Reviewer
Score 10 out of 10
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We utilize VMware across our entire organization including our production data center locations as well as our corporate office locations. VMware ESXi has changed our business practices positively in every way. It has allowed us to break the strings attached between the hardware layer and OSE layer and has allowed us significant flexibility in regards to update time of our products and services.
  • Better uptime
  • Easier scheduled maintenance windows when an outage is needed
  • Consolidation of server hardware
  • Flexibility
  • License Costs
  • Better email notification support of host hardware usage or failure
  • Better email notification support of guest OSE disk usage / system resources / thresholds
VMware ESXi will dramatically help any business consolidate their existing physical server environments by utilizing better usage of host system resources which will, in turn, save on rack space costs, server costs, and energy / heat by combining those server OSEs into virtualized environments that can allow the usage of multiple OSEs on each host server.
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Anonymous | TrustRadius Reviewer
Score 10 out of 10
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I do IT support for around 40 companies. We exclusively use VMWare as the OS on all new servers. We not longer implement any non-virtualized servers. We currently run a mix of ESXi 4.1, 5.0, 5.1, and 5.5 and will soon start deploying version 6.0. VMWare allows us to better utilize hardware assets while keeping costs to a minimum.
  • Easy management of servers. You have full access to all server features from the web console or GUI.
  • With proper licensing, it is a great tool for high availability computing. It allows you to move servers across multiple pieces of hardware with little to no downtime.
  • Easy setup. The installation is very straight forward and small. You can even run it off an SD card in the server leaving more disk space for your data stores.
  • Licensing can be expensive, but they do offer cheaper versions.
  • I do not like that they are pushing the management features to the Web based console. I have been using the GUI for so long that it is a hard transition for me.
  • I have had multiple VCenter updates fail. At this point it is easy to deploy a new VCenter appliance than to upgrade an existing one.
It comes down to VMWare vs. Hyper-V. It is almost an Apple vs. Android debate as they are both capable tools. I personally have used VMWare my entire professional career so that is my preference. Shockingly, I don't have much negative to say about it and that is really a great feat when you consider the length of time I have been using and administering it.
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Anonymous | TrustRadius Reviewer
October 16, 2015

ESXi review

Score 10 out of 10
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We use ESXi across the whole organization; 100% of our servers are virtualized on it.
  • It does virtualization well. Management is easy and simple.
  • HA/Failover is simple
  • I don't have any significant ideas for improvement suggestions.
ESX is awesome for anyone wanting to virtualize anything.
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Anonymous | TrustRadius Reviewer
October 14, 2015

VMware ROCKS

Score 10 out of 10
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Our test/lab environment currently runs on a VMware backend to maximize physical hardware. We currently have 8 VMs running on a ESXi system.
  • Hardware utilization for virtual machines
  • Low hypervisor requirements
  • Free product (ESXI)
  • Easy to administer
  • Move back away from web administration
  • Make ESXi easier to patch without the patch management add in in vCenter.
  • Implement a mid point between ESXi (free) and ESXi with vCenter server.
From lab/test environments to full Production systems, just use it, and you'll see why the bulk of the market uses VMware.
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Anonymous | TrustRadius Reviewer
Score 10 out of 10
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We use VMware ESXi across the whole organization to host servers that service every department in the organization. Virtualization with VMware ESXi has allowed us to reduce the total number of physical machines in our datacenter, thereby reducing the overall cost of maintaining those servers. Having a single point of management, from my desk, of all servers in our organization is a huge help.
  • Centralized management is SO useful.
  • Virtual console is great for troubleshooting issues ranging from boot to network connectivity.
  • The ability to dynamically resize disks and add storage is crucial.
  • Accessing the bare metal hard disk and moving machines around is virtually (no pun intended) impossible.
  • Licensing is increasingly expensive.
Do you want to save time and make your job easier? Get VMware ESXi.
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Anonymous | TrustRadius Reviewer
October 06, 2015

VMware ESXi For The Win!

Score 9 out of 10
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Verified User
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We use VMware ESXi as our main virtualization platform. It is managed by our IT department. We have multiple sites tied together using VMware vCenter Server. It helps us manage our entire virtualized environment by providing a streamlined interface through the vSphere client. The amount of time we have spent troubleshooting server issues has declined greatly since we adopted VMware.
  • The vSphere client interface is very intuitive to use whether accessed via the web or local client.
  • It is easy to perform the initial installation and configuration of ESXi.
  • The integrated monitoring functionality makes it easy to monitor the status of the physical server.
  • The web interface for vSphere is quite slow.
  • Several new features are no longer supported in the locally installed vSphere client.
  • If you upgrade a VM to machine version 10 or greater, it is hard to downgrade.
How large do you plan on scaling your environment? It may be possible to use the free version of ESXi in smaller environments.
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Feature Scorecard Summary

Virtual machine automated provisioning (79)
8.8
Management console (89)
8.5
Live virtual machine backup (78)
8.8
Live virtual machine migration (81)
9.5
Hypervisor-level security (80)
8.9

About VMware ESXi

VMware ESXi is a popular hypervisor, from VMware.
Categories:  Server Virtualization

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