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it_user315672 - PeerSpot reviewer
VMware Administrator II at a healthcare company with 501-1,000 employees
Vendor
I'm able to scale my system for more users by ordering an additional host and over-provisioning.

What is most valuable?

Performance is the most valuable feature because you are moving the storage closer to the CPU. It’s also cheap. We also evaluated an all-flash array, but even a low-end flash is much more expensive. This is much cheaper.

How has it helped my organization?

Concrete benefits would be manageability; we don’t have a storage guy because there is less stuff to deal with.

The savings is not the issue but I can scale my system – I’m building the node for 200 users, but all I will have to do is order another host and it will be configured exactly the same, and they are over-provisioned in terms of memory.

For how long have I used the solution?

I have been using VMWare since it was a beta test.

What do I think about the stability of the solution?

I don’t know, but my gut feeling is that it distributes across the hosts, which should be very stable, and it’s all done at the hypervisor level. I don’t think we’ll have any issues.

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

I think it’s scalable in a linear fashion. We’ve outgrown our low-end SAN and hit a wall. We didn’t have a storage guy so we hit a wall when we hit 180 users and it was thrashing the SAN. With VSAN, that kind of issue – especially using the sizing tool – says that you should be more than fine. We're a small shop so we don’t have any doubt that it will scale to size.

How are customer service and support?

They are the best in class – I hold everyone else to their standard. They solve the problem and work the problem. I’m kind of spoiled because I also get federal support so I get especially good service. I have always found their support to be stellar.

I had an issue a few years ago where my hosts were dropping and I couldn’t connect to them, so for three days I worked with VMWare. I went through four shifts of support staff, and they stayed with me. It was a 72 hour outage and I got back around to my original guy, and he figured it out. They are amazing. They don’t point a finger – with IBM they would hand it off from one guy to another and will never ever tell you that.

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

We replaced our infrastructure and did a proper POC. It’s cheap enough that we can still use the hosts and hook a SAN in, and everyone will get an SSD at their desks, so most of the cost is infrastructure. I loved it when I heard about it – virtualized storage and a distributed RAID. Makes total sense.

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

Their licensing gets a bit confusing, it’s hard to get the hang of that.

Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
it_user315648 - PeerSpot reviewer
Director Storage and System Architect at a comms service provider with 1,001-5,000 employees
Vendor
It's a cost-effective solution for medium-sized IT organizations because you can start small and then grow as needed. However, it had stability issues during my testing period.

Valuable Features

From what I saw, you can create the SAN in a small environment, and then grow. That’s a valuable feature of VSAN and makes it cost effective.

Improvements to My Organization

It's cost effective because you can start small and grow as needed.

Room for Improvement

From my experience testing it, VSAN could be more stable.

Use of Solution

We tested it for about three months.

Stability Issues

I was not sure about its stability because we have a big SAN shop and I got the impression that it’s good for small offices and not the larger ones.

Scalability Issues

The scalability seems ok – I would give it 6/10 because in a traditional SAN you can go up to a few terabytes. However with VSAN, it seems you can only get a couple hundred terabytes, and I expected more.

Customer Service and Technical Support

We haven’t had a chance to use it for VSAN, but in general we've had pretty good support from VMware, so I think VSAN tech support will also be good.

Implementation Team

We haven’t fully implemented, but it should be simple and straightforward.

ROI

We will implement it by ourselves without a vendor team.

Other Solutions Considered

We looked into Dell and Nutanix, and chose VSAN because of ease of setup.

Other Advice

Customer support, the actual technology, how robust or stable it is and the ease of deployment are the criteria too look for when selecting a vendor.

I would say that if you’re a medium IT organization and looking for a cost effective solution, VSAN is worthwhile; but, if you’re a bigger environment, I would go with a bigger SAN like EMC, NetApp, and IBM.

Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
Buyer's Guide
VMware vSAN
June 2025
Learn what your peers think about VMware vSAN. Get advice and tips from experienced pros sharing their opinions. Updated: June 2025.
860,168 professionals have used our research since 2012.
it_user315741 - PeerSpot reviewer
Senior Advisor IT Architecture for Cloud Computing Solutions at a tech services company with 10,001+ employees
Real User
We didn't need a special network or any hardware -- just add a new NIC. Backups are not easy, however, as it's distributed storage and you must be careful not to make a host unavailable.

Valuable Features

  • Easy to set up
  • Very Fast
  • Good investment
  • Surprised at beta ration
  • Works very well

Improvements to My Organization

  • Price
  • We don’t need special network or hardware, just add a new network card
  • If you have 10GB, you can just go with vSAN
  • All-flash gives improved performance over hybrid, and competes with other solutions
  • If combined with Horizon, it lowers the price of solution

Room for Improvement

  • Better integration with VMware DOS
  • vBackup with vSAN is not so easy, because it's distributed storage so must be careful not to make host unavailable.

Deployment Issues

I tried to install it on one cluster and the host got stuck.

Stability Issues

Awesome stability.

Scalability Issues

  • Awesome scalability, especially when combined with vSphere 6
  • With vSphere 5.5, limited scalability

Customer Service and Technical Support

  • In beta, no technical support
  • Great fourm support

Initial Setup

Very easy, just a few clicks. You don’t need special knowledge of storage .because it can be fully automated or you can set it manually if you want

Other Solutions Considered

There are a few products on the market. vSAN has lots of competitors, but if you want to play with a single software provider, go with vSAN. However, if you want more hardware, maybe go with Nutanix.

Other Advice

They lose points because its tricky to fully understand.

Disclosure: My company has a business relationship with this vendor other than being a customer. We're a partner
PeerSpot user
it_user315612 - PeerSpot reviewer
Cloud Architect Leader at a aerospace/defense firm with 10,001+ employees
Real User
We can scale as needed since we're not required to buy an entire monolithic solution up front, though I'd like to see software-based disk-level encryption in the next release.

Valuable Features

The ability to scale as you need – we can start with a very small footprint as opposed to a monolithic storage solution where you buy the entire solution up front. We use everything – Hitachi, NetApp, but we're using it more and more because we can start small and scale as you need. Cost saving essentially.

Room for Improvement

I would like to software-based disk-level encryption in the next release. We deal a lot with the Department of Defense, and arms and munitions government-regulated stuff, so we would like to see more. From their roadmap, I see its coming but it has been an impediment.

Stability Issues

It's not quite there yet. We've had a few outages that were addressed. It's not 100% there yet -- give it another six months.

Scalability Issues

Scalability is why were using it – especially with v6. Any scalability issues we had, were addressed.

Customer Service and Technical Support

It was excellent. The response time was great, and as we're a large customer so we had no issues.

Initial Setup

Initial setup was not difficult to do at all.

Implementation Team

We implemented on our own.

Other Solutions Considered

We have played with Nutanix but it wasn’t there yet – VSAN is more attractive because it operates kernel level, as opposed to Nutanix.

Picking a vendor also depends on which segment is looking – I run most of the IT stuff and to me peer reviews are very important. Others within our company look to Gartner.

Other Advice

I would say that the main reason its attractive is that you can grow as you need. The other thing that makes it especially attractive is that from an IO perspective, VSAN has the better ability to perform more efficiently because it operates within the hypervisor. It's VMWare specific so that can be a downside. But for pure VMWare shops, VSAN is the best option in my opinion.

Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
it_user315600 - PeerSpot reviewer
Network Engineer at a healthcare company with 1,001-5,000 employees
Vendor
We're able to integrate it with vSphere, bringing speed and security to our patient-sensitive data system. And while it's scalable, I've yet to test its stability extensively.

Valuable Features

  • The integration with other VMware solutions, such as vSphere, is valuable for us.
  • It's also fast -- faster than hybrid and all-flash setups.
  • Three-host configuration provides security.

Improvements to My Organization

I think that it brings speed and security as we have patient-sensitive data that we need to store.

Deployment Issues

N/A

Stability Issues

I love VMware – it’s allowed us to virtualize our server infrastructure, but I haven’t tested the stability of VSAN extensively yet.

Scalability Issues

From what I’ve seen it’s extremely scalable.

Customer Service and Technical Support

VMware is top notch, but I can’t evaluate yet for VSAN.

Other Advice

You should look at scalability and integration withing the vSphere environment.

Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
it_user315390 - PeerSpot reviewer
IT Manager with 1,001-5,000 employees
Real User
We have three hosts in a single cluster that provides us centralized storage with High Availability, although the hardware compatibility list should be expanded.

Valuable Features

  • It's very simple to use.
  • It work on commoditized hardware.
  • It provides centralized storage.

Improvements to My Organization

It's lowered our storage costs while still maintaining High Availability and with easy installation.

Room for Improvement

Expand the hardware compatibility list – it's pretty short. Definitely also the diagnostic and monitoring could be improved. That stuff is still very new.

Use of Solution

We have been using it since it came out in March 2015.

Stability Issues

So far so good.

Scalability Issues

Unsure – all I know is what I read, if it does what it says it does I'm very impressed.

Customer Service and Technical Support

Very good – quality support.

Initial Setup

We have three hosts in a cluster, and it was surprisingly easy.

Other Advice

Try it out – that’s the best way to know whether it's right for your organization.

Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
it_user315378 - PeerSpot reviewer
Works at a university with 1,001-5,000 employees
Vendor
It's fast, software designed storage that costs less than an all-flash array. We're expecting some improvements, but at the moment you have to store every object on multiple disks to protect it.

What is most valuable?

It's fast – it’s really blazing fast.

How has it helped my organization?

It saves us the expense of an all-flash array. All-flash would work for us, but VSAN is cheaper. I think that this solution is really new, but it has real benefits over all-flash arrays.

What needs improvement?

We are seeing some improvements coming up, but at the moment you have to store every object on multiple disks to protect it, and they should be better distributed over disks to help parity.

What do I think about the stability of the solution?

It's very stable – we have had no failures.

What do I think about the scalability of the solution?

It’s really scalable in terms of both capacity and performance, at least for our needs.

How are customer service and technical support?

We haven’t had to use it – the product is really stable.

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

We were using a traditional storage array from Dell and we will see more VSAN usage in the future.

How was the initial setup?

The initial setup was a little bit complicated because we have to do everything from scratch. It’s a new world, and much easier in the newer releases.

Which other solutions did I evaluate?

We looked at other vendors – classic storage vendors – but we thought this direction was faster as things are moving towards a software designed storage.

What other advice do I have?

I think you should try it – its really stable and valuable and help to drill your costs down.

Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
it_user316428 - PeerSpot reviewer
Storage and Virtualization Engineer at a university with 501-1,000 employees
Vendor
As older ESXi hosts are phased out, you can replace them with vSAN and add more nodes, although it lacks deduplication features.

Valuable Features

The ability to scale out incrementally instead of doing a big five year capital expense purchase that hurts the budget. Vith vSAN, you buy x86 servers and you're done, and you can scale up.

Improvements to My Organization

The cost. VSAN allows us to do storage cheaper and better than before.

Room for Improvement

Deduplication feature is needed, and I'm thinking maybe it needs a lot of nodes to store all redundant data. This will be addressed in their next beta version.

Stability Issues

Assuming we get policies set up where they need to be, it's a stable technology. It's distributed architecture is slick, and will hold up.

Scalability Issues

First and foremost, it offers a different way to scale, it’s smaller and easier to digest in smaller bites. As older ESXi hosts are phased out, you can replace with VSAN and add more nodes. Very incremental approach.

Customer Service and Technical Support

I've never had to use it.

Other Advice

It feels forward thinking and I can see this as big game changer, which is exciting, but it's only one-and-a-half-years old -- a toddler. There are some minor things wrong, but it's potential value could far overshadow it curent weaknesses, Currently we don’t have NSX, and that could be a pivotal thing, but we don’t have that licensing yet.

Disclosure: My company does not have a business relationship with this vendor other than being a customer.
PeerSpot user
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Updated: June 2025
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Buyer's Guide
Download our free VMware vSAN Report and get advice and tips from experienced pros sharing their opinions.