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PeerSpot user
CEO at a tech services company with 51-200 employees
Consultant
Very simple to configure and use. No agnostic option of vSAN to use it with another hypervisor.

What is most valuable?

One of the most valuable features of this product is the integration of VMware vSphere. If you have experience with this product, it is very simple to configure and use. With minimal studying, you can configure and manage it.

How has it helped my organization?

The main improvement we found is the simplification of configuration. No more SAN configuration is required; no more complex configuration of LUN and presentation to the VMware infrastructure.

What needs improvement?

I think this product has a lot of areas for improvement.

First of all, there’s no agnostic option of vSAN to use it with another hypervisor. The only option is to present the storage via NFS (iSCSI will be available with version 6.5). The problem with this configuration is that you lose all the benefits of HCI. Essentially, you transform the vSAN into a network data store.

Also, no PIN to SSD: If you have a hybrid mix of disks, you can’t configure a PIN for a particular VM on a particular SSD.

Additionally, some features are only available on the all-flash version.

Deduplication and compression are enabled cluster-wide. There is a way to disable these options, but the problem is that you can’t enable this option in any combination you want. Essentially, compression and deduplication are either both on or both off. This is not good if you intend to use it for an application like SQL server and Oracle DB.

The vSAN license not very cheap.

For how long have I used the solution?

I’ve been testing and studying it for about 6 months.

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VMware vSphere
June 2025
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What do I think about the scalability of the solution?

The scalability with these kind of nodes is fantastic, because you can scale out with any resource you want.

  • Storage space (each server has 24 hard disk slots).
  • RAM can be upgraded to 1.5TB for each node.

The only problem is that it’s not possible to scale on CPU. So if you want to scale on CPU, you have to buy 3 CPUs in one shot (with numbers of core), or buy another node. We know HCI work in this way.

How are customer service and support?

I have never used support until this point. We have good enough skills to fix problems without support for now.

Which solution did I use previously and why did I switch?

We used old-style infrastructure with a SAN data store and blade center. We changed to simplify infrastructure management.

How was the initial setup?

Installing a complete VMware with three nodes, vSphere Software Appliance, and all things related took some time. So its not so easy and not so fast.

Which other solutions did I evaluate?

We evaluated lot of alternatives, both standard infrastructure and HCI infrastructure. Coming from a previous VMware vSphere installation, we choose the same product for continuity.

What other advice do I have?

Its important to have experience with VMware products, and licensing is not very cheap.

Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
PeerSpot user
System Support Engineer at TMN
Vendor
HA, FT and DRS features support large scale servers and VMs.

What is most valuable?

Its compatibility with LUNs and its vMotion, HA, FT and VDS. It works very smooth with LUNs. When we talk about its Cluster feature, then the HA, FT, and DRS features are just great in how they support large scale servers and VMs without any trouble in the production environment.

VMware offers VDS switches which are very efficient and useful regarding network configuration in your virtual environment. The configuration should be the same on your cluster-joined ESXis to improve performance and when running a production environment or VMs on any ESXi.

These features are very good for us.

How has it helped my organization?

While using its HA feature, we don’t need to worry about usage of servers. Our VM automatically shifts to another server which has resources using vMotion. VDS provides its NIC which is available on all ESXis. You have to configure it one time at Center level and after that you don't need to worry about any ESXi configuration or its failure. When DRS or HT transfers your VM to another host, then that VM will get the same NIC via VDS.

What needs improvement?

When we talked about its Vmotion feature so we see we are able to move our Vms in running state from one host to another host within cluster and shared storage but we are unable to move VMs accros cluster and storage in running state so here is vsphere 5.5 suffer little bit.

I guess in vMotion it should have the ability to move VMs across clusters of vCenters and different type of CUPS.

For how long have I used the solution?

We have been using this solution for many years.

What do I think about the stability of the solution?

We did not have any issue so far in stability.

What do I think about the scalability of the solution?

We have had scalability issues; we have backup plans if ESXi crashes.

How are customer service and technical support?

I would rate technical support 5/10.

Which solution did I use previously and why did I switch?

We didn’t use anything previously. We chose VMware ESXi 5.5 over Hyper V due to its features.

How was the initial setup?

It was complex because you have to prepare for every situation.

What's my experience with pricing, setup cost, and licensing?

Its pricing is affordable for a small company as well.

Which other solutions did I evaluate?

We evaluated vMotion, HA, FT, and VDS.

What other advice do I have?

I advise you to review your needs and then look into the features. I am sure you will get solution of your needs.

Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
Juan Dominguez - PeerSpot reviewer
Juan DominguezSenior Solutions Architect & Consultant at ZAG Technical Services
Top 20Consultant

I have worked with Citrix XenServer, Microsoft Hyper-V and VMware. Out of these three hypervisor, VMware is still by far the most flexible, scalable and easy to manage system. VMware with vCenter server is hands down the most feature rich of the three. Great write up and thank you.

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Buyer's Guide
VMware vSphere
June 2025
Learn what your peers think about VMware vSphere. Get advice and tips from experienced pros sharing their opinions. Updated: June 2025.
860,745 professionals have used our research since 2012.
PeerSpot user
Senior System Administrator at a financial services firm with 501-1,000 employees
Vendor
It cuts the cost of maintaining high availability, which is very expensive with physical servers.

What is most valuable?

Every organization that I know of that has wanted to implement virtualization in their environments wants HA with every virtual server. That's why for us, we've found the most valuable feature is the ability to move VMs between vCenters and fault tolerance within our four vCPUs.

I would also add that the vSAN feature was not useful beforehand but now with Hyper-Converged infrastructure it will simplify vSphere management as well as storage. We may be acquiring xRAIL from EMC which will definitely eliminate needs for storage as well as Fibre Channel switches.

How has it helped my organization?

The biggest advantage is that it cuts costs. A few years ago, I worked in an environment of all physical servers. It was very expensive to maintain high availability with them. vSphere cuts that cost.

No more lengthy physical server server restores. When this product is coupled with Veeam Backup and replication restoring whole virtual machine or individual files or active directory objects virtually happen in minutes.

What needs improvement?

I'd like to see small VMDKs in the next version since Hyper-V provides that option. Right now, that process with vSphere is still manual and requires downtime.

For how long have I used the solution?

I have used this product for the last five years.

What was my experience with deployment of the solution?

With previous versions, for example in 5.1, it was inconvenient to deploy an SSO database. Now, an SSO database is local and automatically installed.

What do I think about the stability of the solution?

It's highly stable.

What do I think about the scalability of the solution?

It scales without issues.

How are customer service and technical support?

The level of technical support depends on who you're talking to. Some people are more experienced than others. Overall, though, I'd rate them well, but they don't respond very quickly during the weekends.

Which solution did I use previously and why did I switch?

I used Hyper-V, which worked well on a single server running Windows 2008 R2. But as soon as a cluster is configured, there are lots of issues with SCVMM. I've heard that Microsoft made some improvements and the product is now more stable, but VMware ESXi is based on the Linux OS and is much more stable. I've had to learn command-line code in Linux, but VMware is better than Microsoft.

How was the initial setup?

It's very easy to set up because it's a popular product and there are many online articles. VMware articles are a bit dry. Many consultants post their experiences, making deployment of vSphere straightforward so long as it's planned properly.

What about the implementation team?

I have implemented this product either from scratch or as part of an upgrade. One piece of advice that I would give is to make sure that the certificate is minimum 1024 bits (I forgot to check that). Other than that, an upgrade or set-up is very straightforward, especially with v6.

Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
Chris Childerhose - PeerSpot reviewer
Chris ChilderhoseEnterprise Architect at ThinkON
ExpertTop 5Real User

I believe for Version 6 the minimum key requirement for CA signed SSL certificates is 2048 not 1024. Nice review.

PeerSpot user
Chief Technology Officer at a tech services company with 51-200 employees
Real User
It is very easy to get things working and it is more difficult to get things working smoothly

What is most valuable?

Stability of the Hypervisor, DRS, and HA are some of the more valuable features.

How has it helped my organization?

VMWare (and any virtualization platform) completely changes the way an organization functions. The way you investment in hardware is done from a completely different perspective, in that an initial capital investment is required, and the resources would then be available for the organizations' use.

This, of course, allowed the organization to have a ton of flexibility in resource availability. We were then able to create and build high availability across deployed hardware that would've otherwise been much more complex to accomplish using more traditional methods.

What needs improvement?

Nothing I can think of. For a while, allowing for HA without shared storage was a missing feature, but as of 5.1, VMware introduced that feature.

For how long have I used the solution?

I have used vSphere v4.0/5.0/5.1 alongside vCenter v5.1, and VMware Vieew v4.0 and v5.2.

What was my experience with deployment of the solution?

There is a lot of know how required to deploy VMWare correctly, especially if it is being architectured to be highly available. A simple deployment is not too hard, but the issues that I had faced initially were mostly related to adequate shared storage connectivity, etc.

What do I think about the stability of the solution?

As mentioned above, the stability issues have been caused mostly by the inadequacy of the storage (90% of problems have been related storage).

What do I think about the scalability of the solution?

Not at all. Scalability is one of VMware strengths. Running out of resources has really never been an issue, as it is easy to add new hardware, and/or storage, and expand existing infrastructure.

How are customer service and technical support?

Customer Service:

Customer service has always been available, in a more or less adequate time. VMware is good at responding at critical issues that have a high business impact, though sometimes I had experience less than stellar experience in slightly less urgent issues. This is mostly referring to the timeliness of service. Getting the help needed after getting in touch with support has never been an issue.

Technical Support:

The support is usually pretty good. VMware support is good at making an effort to resolve the problem on first contact, and escalate as necessary. I have always received a solution to my problem.

Which solution did I use previously and why did I switch?

For an enterprise virtualization platform, I have only used VMware. I have also used Amazon Web Services as an IaaS, but that doesn't exactly sit in the same category as an on premises virtualization platform.

How was the initial setup?

As mentioned above, a simple setup is not hard. However, there are lot of intricacies to the product to set it up correctly with shared storage, so that fail over can function correctly, and DRS, HA, and vMotion to function efficiently.

What about the implementation team?

I initially did the implementation on my own, with some help from VMware on best practices. I did get some help in getting my enterprise storage installed, and got some guidance from them to fine tune configuration of VMware vSwitches, to achieve optimal performance.

What was our ROI?

The ROI on virtualization platform isn't always necessarily completely obvious at first glance, as the initial cost to implement it is typically fairly high. However, keeping in mind the soft costs, it would easily prove to be more economical than traditional solutions. Not only that, but it also will require less engineers to manage the system, as all the management tools are built-in within vCenter, to create a unified solution that would ultimately reduce management cost.

What's my experience with pricing, setup cost, and licensing?

The original cost of the first set of servers to migrate a whole school district to, was close to $100,000. More recently, an upgrade to an SSD SAN cost an additional $120,000. Keeping in mind software costs of maintaining the product, and all virtualized servers, the day to day cost of the product is essentially the cost of running the hosts, (power, cooling, etc).

Which other solutions did I evaluate?

No. I had started with VMware very early on, and adopted it when it became a viable enterprise product.

What other advice do I have?

For anyone looking to implement VMware, don't take the initial implementation lightly, and don't cheapen up on the hardware, especially the storage. You will save a ton of headaches by investing in good storage that would be adequate for at least three years.

Also, do your homework on best practices, and how to implement things. It is very easy to get things working and it is more difficult to get things working smoothly. Never had I thought that I had to get familiar with the deep workings of disks, and IOPs, read and write/s ... but these are really necessary if a good implementation is the goal.

Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
it_user364896 - PeerSpot reviewer
it_user364896Worker at Rmichs
Real User

No comment.

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PeerSpot user
Senior Environments Engineer - Virtualised Environments at Derivco with 501-1,000 employees
Real User
It's a tiny install, but it's packed with features.

Valuable Features

VMware leads the pack with their hypervisor. It's a tiny install, but it's packed with features.

Room for Improvement

The setup can be complicated for those who are not technically inclined. The pricing can also be complicated.

Use of Solution

I've used it for 10 years now.

Deployment Issues

We did encounter issues during deployment, but they were mostly because of human errors.

Stability Issues

We've had no issues with stability.

Scalability Issues

We've had no issues scaling it for our needs.

Customer Service and Technical Support

Customer Service:

In my experience, I give VMware customer service a 7/10.

Technical Support:

In my experience with technical support, I give them a 7/10.

Initial Setup

The initial setup was straightforward, unless you not technically inclined, in which case it is complex.

Implementation Team

We implemented it with out in-house team.

Pricing, Setup Cost and Licensing

The pricing and licensing with VMware can be complicated, but once you understand it, it makes sense.

Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
it_user418209 - PeerSpot reviewer
Senior Oracle Database Administrator at a tech services company with 1,001-5,000 employees
Consultant
It provides the option to view performance with advanced real-time monitoring.

Valuable Features

  • It provides the option to view performance with advanced real-time monitoring.
  • With it, it's very easy to create new virtual machines.
  • It also helps you upgrade your machines by making hot templates of them.

Improvements to My Organization

We have migrated several databases based on the Oracle VM solution to VMWare as we've seen a great difference between these two products.

Room for Improvement

The setup is complex even for experienced IT administrators who have worked with hypervisors, and it should be made a little easier.

Use of Solution

We've used it for one year.

Deployment Issues

It's a little complex, but we were able to do it. Other than that, we had no issues with deployment.

Stability Issues

We had no issues with the stability.

Scalability Issues

We had no issues scaling it for our needs.

Customer Service and Technical Support

We previously used OVM but chose VMware to consolidate our architecture.

Initial Setup

Our initial setup was quite complex because several machines where physical machines, others were OVM virtual machines, and others were VMware machines.

Implementation Team

We implemented it through an in-house team.

Other Advice

I would have preferred to implement vSphere straight away instead of OVM and then switching.

Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
it_user11286 - PeerSpot reviewer
it_user11286IT - Server Administration with 501-1,000 employees
Vendor

VMware IS a very solid product and I agree with Chris that the complexity is defined by the current environment being brought to it. Although it increased the cost, we hired a 3rd party vendor to assist with the initial setup so we we left any questions regarding the design and implementation behind. Once set up, patches and upgrades have been done in house with ease. We are using 5.5 with plans in the pipeline to upgrade to 6 this year. Good review Marco - thanks!

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it_user414402 - PeerSpot reviewer
Technical Director at ADMI France
Real User
​The more visible example is the performance seen by the user in my DaaS product.

What is most valuable?

  • High performance for data access
  • Scalability
  • Simplicity

How has it helped my organization?

The more visible example is the performance seen by the user in my DaaS product.

What needs improvement?

A more graphical reporting of the health of vSAN.

For how long have I used the solution?

I've been using it for six months to manage two clusters of four servers. One with vSphere ESX 5.5 with 30 ISCSi network storage, and one with vSphere ESX 6.0 with 40 vSAN six storage.

What was my experience with deployment of the solution?

We had no issues during deployment.

What do I think about the stability of the solution?

For the moment, I have only one issue. One disk of a server is not seen by the system. I have opened this issue with Dell, but it’s not a hardware problem. I have to reboot the server but the problem persist.

What do I think about the scalability of the solution?

We have had no issues scaling is to our needs.

Which solution did I use previously and why did I switch?

Previously, I used a traditional ISCSi network with SAN.

How was the initial setup?

It's simple because I followed their procedures. It only took me a week to see results.

What about the implementation team?

I implemented it myself.

What's my experience with pricing, setup cost, and licensing?

I pay for my consumption with VMware vCan Program.

What other advice do I have?

Double check the hardware compatibility lists with the builder.


Disclosure: My company has a business relationship with this vendor other than being a customer. I’m using my own vCloud Air Network Program because I’m resseller of a Daas Solution.
PeerSpot user
it_user2652 - PeerSpot reviewer
Project Manager at a non-tech company with 10,001+ employees
Vendor
Top 20
Highly recommended virtualization product for mid/large sized organizations

ESXi is highly recommend for virtualization these days for mid/large sized organizations due to its increased reliabilty and lot of other features.

Pros:- -

1. VMWare ESXi is virtualization product that allows us to partition a single physical server into multiple virtual machines. 

2. VMWare ESXi hosts can be with Windows, Solaris, Linux and Netware, any or all of which can be used concurrently on the same hardware. 

3. VMWare ESXi has been proved as leader in cloud enterprise class solutions. 

4. VMWare ESXi takes virtualization higher and deeper with rich storage automation and more advanced virtual networking tools. 

5. VMWare ESXi allows dynamically to modify cpu, memory, disk and network configurations. 

6. VMWare ESXi hosts can be accessed using vsphere client as well as in browser. 

7. VMWare ESXi is good for production applications as well as for testing environment. 

8. 24*7 support is available from VMWare for all kinds of support issues. 

9. VMWare ESXi supports advanced features like state capture, live migration, high availability, dynamic resources etc.

Cons:- 

1. License cost is little expensive. 

2. Free version allows server memory upto 32GB.

Alternate Vendors: 

Oracle VM, Hyper-V, AWS !!

Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
it_user2652 - PeerSpot reviewer
it_user2652Project Manager at a non-tech company with 10,001+ employees
Top 20Vendor

That's correct. These days open source programs are more popular and they also provides features similar to paid products.

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Buyer's Guide
Download our free VMware vSphere Report and get advice and tips from experienced pros sharing their opinions.
Updated: June 2025
Buyer's Guide
Download our free VMware vSphere Report and get advice and tips from experienced pros sharing their opinions.