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it_user590448 - PeerSpot reviewer
Senior Technical Consultant at a tech services company with 51-200 employees
Consultant
Integrates into the web client, with storage profiles, and VMkernel.

What is most valuable?

The valuable features are:

  • The integration into the web client (health, component compatibility checks such as controller drivers and re-sync)
  • Integration with storage profiles
  • Simple patching process
  • Integration into the VMkernel

How has it helped my organization?

The solution reduced the deployment administration of the storage components.

What needs improvement?

The areas of improvement are:

  • The performance reports should be improved when customers are using third-party SSL certificates. This service doesn't work if you use it.
  • In a hybrid configuration, it would be good if you could mirror the SSD instead of only having access to one DISK for caching.

For how long have I used the solution?

We have been using this solution for over a year.

Buyer's Guide
VMware vSAN
October 2024
Learn what your peers think about VMware vSAN. Get advice and tips from experienced pros sharing their opinions. Updated: October 2024.
816,406 professionals have used our research since 2012.

What do I think about the stability of the solution?

I did not encounter stability issues because I used certified hardware and installed the required firmware/drivers.

However, I have the following issues with stability:

  • Not all ESX hosts contribute to statistical collection because we use third-party SSL certificates. We opened a case with support.
  • Under the "Datastore” and “Datastore Clusters" views, I cannot move the "Datastore" into a more appropriate folder. It has to be located in the root directory of the view.

What do I think about the scalability of the solution?

There have been no scalability issues at this stage.

How are customer service and support?

Technical support is strong in their technical knowledge.

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

I have deployed several Nutanix and VSAN systems. I have never had to switch between products. Being a technical consultant, our customers generally have decided on the preferred technology before they engage me to design and implement their solution. I openly discuss my view on each product when asked.

How was the initial setup?

I found challenges in setting up a VSAN Cluster that were not related to VMware VSAN itself. They were related to server hardware and network configurations.

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

Licenses are expensive wherever you go. Many people don't appreciate the long-term savings with a technology like vSphere and VSAN, and therefore complain about the up-front costs.

I would prefer if VSAN were free with the Enterprise edition. It would make its adoption more palatable.

Which other solutions did I evaluate?

I have deployed Nutanix and VMware VSAN clusters.

What other advice do I have?

RTFM and have realistic expectations about the product.

Disclosure: I am a real user, and this review is based on my own experience and opinions.
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: I am a real user, and this review is based on my own experience and opinions.
PeerSpot user
Buyer's Guide
VMware vSAN
October 2024
Learn what your peers think about VMware vSAN. Get advice and tips from experienced pros sharing their opinions. Updated: October 2024.
816,406 professionals have used our research since 2012.
it_user315723 - PeerSpot reviewer
Systems Engineer at a media company with 1,001-5,000 employees
Vendor
We've gotten rid of shared storage, which is a better solution than an all-flash array. I've heard, however, that maintenance of it causes stability issues.

Valuable Features

Getting rid of sharing storage, especially VSAN 6. That would be even better than having an all-flash array.

Stability Issues

I hear a lot of issues of stability whenever you go to maintenance, but people who are having spectacular experiences are not speaking the loudest so it can be hard to tell.

Scalability Issues

I haven’t looked at configuration maximums but it seems like you can scale it up pretty hard in terms of clusters with vSphere 6.

Customer Service and Technical Support

Customer Service:

In general, VMware customer support is world class. Response time is really quick – you get connected to experts much faster than in other companies, like Microsoft for example.

Technical Support:

All I've seen is community support, especially from bloggers and community experts. I haven’t had any experience.

Initial Setup

It's not very different than vSphere 3. If you're comfortable with VMware it’s straightforward. From what Ive seen, it’s a simple install once you have all the hardware. I have heard you have to tweak it performance wise.

Other Advice

Support is up there in the top five things to look at. If you can call, have online communities, easy access to articles. I would also add that if you can get through to someone who has deep knowledge of the product quickly.

Stability, the issue that we have run into is that they are fly-by-night brand new startups and you can get stranded without support.

You need to vet the company, they need to be around in a few weeks to help you. Also, peer reviews are very important – invaluable. Salesmen will tell you everything, we look at whitepapers and vendor supplied information. Google is your friend.

Disclosure: I am a real user, and this review is based on my own experience and opinions.
PeerSpot user
it_user234747 - PeerSpot reviewer
Practice Manager - Cloud, Automation & DevOps at a tech services company with 501-1,000 employees
Real User
VMware I/O Analyser Fling vs. Iometer

Originally posted at vcdx133.com.

I previously posted about my “Baby Dragon Triplets” VSAN Home Lab that I recently built. One of the design requirements was to meet 5,000 IOPS @ 4K 50/50 R/W, 100% Random, which from the performance testing below has been met.

The performance testing was executed with two tools:

  • VMware I/O Analyser Fling – Excellent tool that collects esxtop data as well; if you need fast and easy storage performance testing, keep this in your toolkit.
  • Iometer configured as per the VMware 2M IOPS with VSAN announcement

Iometer – Test configuration

Iometer – Results

VMware I/O Analyser – Test configuration

VMware I/O Analyser – Results

Observations

  • The realistic Iometer results were significantly lower compared to the same settings with the VMware I/O Analyser results. This is because the Iometer config was with 8 x 8GB disks and the VMware I/O Analyser was testing with the default 100MB disk. If you use VMware I/O Analyser, make sure you extend the 100MB disk to 8GB (as per User Manual that comes with the Fling). You can see the lower latency due to less parallel I/O over the smaller address space.
  • Due to the small size of workloads, all storage tested was SSD and not SATA. Switching from VSS to VDS with LBT had no improvement on performance. Network Throughput was around 20MB/s for the VSAN VMkernel. The Corsair SSD drive is rated at 85,000 IOPS @ 4K 100% Write 100% Random, so with VM config, CPU, RAM, SSD and Network not being the bottleneck, I suspect it is the Z87 Serial ATA controller (or its ESXi driver) that is the limiting factor (even though it is supposed to support 6Gb/s).
  • I am considering scrapping my ESXi environment to test a single host with Windows Server 2012 and Iometer and then ESXi with SSD (DAS) and Iometer again, just to see if not having VSAN makes a difference.

Disclosure: I am a real user, and this review is based on my own experience and opinions.
PeerSpot user
PeerSpot user
Solutions Architect with 51-200 employees
Vendor
VMware Virtual SAN vs. EMC ScaleIO and conventional storage arrays

Software-defined and hyper-converged storage solutions are now a viable alternative to conventional storage arrays so let’s take a quick look at how two of the most popular solutions compare – VMware Virtual SAN (VSAN) and EMC ScaleIO:

Architecture

On vSphere this is an easy win for VMware as VSAN is delivered using kernel modules which provides the shortest path for the IO, has per Virtual Machine policy based management and is tightly integrated with vCenter and Horizon View.

ScaleIO is delivered as Virtual Machines, which is not likely to be as efficient, and is managed separately from the hypervisor – on all other platforms ScaleIO is delivered as lightweight software components not Virtual Machines.

VSAN also has the advantage of being built by the hypervisor vendor, but of course the downside of this is that it is tied to vSphere.

Availability

Win for EMC, since the failure of a single SSD with VSAN disables an entire Disk Group. Although VSAN has the ability to support up to three disks failures where as ScaleIO only one, in reality the capacity and performance overhead of supporting more than one failure means that VSAN will nearly always be used with just RAID 1 mirroring.

If you need double disk failure protection you are almost certainly better off using a storage array.

Performance

Easy win for VMware as VSAN uses SSDs as a write buffer and read cache, ScaleIO does have the ability to utilise a RAM read cache.

Flexibility

Easy win for EMC as with ScaleIO you can:

  1. Utilise physical servers running Windows and Linux
  2. Utilise hypervisors running vSphere, Hyper-V, XenServer and KVM
  3. Utilise any storage supported by the OS or hypervisor
  4. Utilise any combination of HDDs and SSDs as required
  5. Create multiple Protection Domains per system for greater resiliency
  6. Create Storage Pools for each storage tier within a Protection Domain
  7. Mix and match nodes with dissimilar configurations

VSAN has a more rigid architecture of using Disk Groups which consist of one SSD and up to seven HDDs.

Elasticity

Easy win for EMC as ScaleIO supports up to 1,024 nodes, 256 Protection Domains and 1,024 Storage Pools, and auto-rebalances the data when storage is added or removed.

ScaleIO can also throttle the rebuilding and rebalancing process so that it minimises the impact to the applications.

Advanced Services

Easy win for EMC as ScaleIO provides Redirect-on-Write writeable snapshots, QoS (Bandwidth/IOPS limiter), Volume masking and lightweight encryption.

Licensing

This is a tricky one as VSAN has the more customer friendly licensing as it is per CPU therefore as new CPUs, SSDs and HDDs are released you will be able to support more performance and capacity per license.

ScaleIO has a capacity based license which is likely to mean that further licenses are required as your capacity inevitably increases over time. There is also two ScaleIO licences – Basic and Enterprise (adds QoS, Volume masking, Snapshots, RAM caching, Fault Sets and Thin provisioning).

The one downside of VSAN licensing is that you need to licence all the hosts in the cluster even if they are not used to provision or consume VSAN storage.

Conventional storage arrays

What are the advantages of a conventional mid-range array?

  1. Rich data services – most storage arrays include de-duplication, compression and tiering along with many other advanced features
  2. Unified storage – many storage arrays support both block and NAS protocols
  3. Replication – many storage arrays support synchronous and metrocluster solutions
  4. Integrated data protection – some storage arrays do not require a separate backup solution
  5. Usable capacity – most storage arrays support parity RAID which can achieve usable capacity ratios of up to 80%
  6. Double disk protection – whilst this is supported on VSAN it is almost certainly not practical at scale
  7. Turnkey solution – with a single contact for support of all hardware and software

What are the advantages of hyper-converged software-defined solutions?

  1. Multi node failure – can tolerate the failure of more than one node
  2. Rapid rebuilds – as they take place in parallel across multiple drives
  3. Bring your own hardware – take advantage of commodity prices
  4. Built-in “IT Deflation” – as over time hardware unit costs drop
  5. Independent – the software lives on beyond the life of the hardware
  6. Elasticity – non-disruptively grow and shrink as required
  7. Low ongoing costs – perpetual license followed by annual maintenance
  8. Gain new features – just by upgrading the software
  9. Simplified management – compute and storage managed together

So which is best?

As always each vendor will build a strong case that their solution is the best, in reality each solution has strengths and weaknesses, and it really depends on your requirements, budget and preferences as to which is right for you.

For me the storage array is not going away, but it is under pressure from software-defined and cloud based solutions, therefore it will need to deliver more innovation and value moving forward. The choice between VSAN and ScaleIO really comes down to your commitment to vSphere – if there is little chance that your organisation will be moving away, then VSAN has to be the way to go, otherwise the cross-platform capabilities of ScaleIO are very compelling.

Disclosure: My company has a business relationship with this vendor other than being a customer: We are Partners with VMware and EMC.
PeerSpot user
Omar_Samir - PeerSpot reviewer
Public Sector Sales Manager and DBA at Diverse
Real User
Very easy to implement in any existing environment
Pros and Cons
  • "Very easy to implement in any existing environment."
  • "Lacks sufficient storage terabytes."

What is our primary use case?

The use case is mainly for greenfields deployment. I'm a senior solutions architect and we are system integrators. Our company is a partner with VMware.

What is most valuable?

Very easy to implement in any existing environment.

What needs improvement?

I'd like to see more storage terabytes available after excluding the management. 

For how long have I used the solution?

I've been using this solution for two years. 

What do I think about the stability of the solution?

The solution is stable. 

What do I think about the scalability of the solution?

The solution is scalable. 

How are customer service and support?

The technical support is very good. 

How was the initial setup?

The initial setup is straightforward and it's very easy to implement in any X86 server so anyone can use it in their existing environment. 

What other advice do I have?

I rate this solution nine out of 10. 

Which deployment model are you using for this solution?

On-premises
Disclosure: I am a real user, and this review is based on my own experience and opinions.
PeerSpot user
reviewer1269042 - PeerSpot reviewer
Account Executive at a tech services company with 1-10 employees
Real User
Storage solution that's easy to manage, use, deploy, and upgrade; offers good technical support
Pros and Cons
  • "VMware vSAN is an easy to use and easy to manage storage solution. Deploying and upgrading are easy. Technical support is very good."
  • "As no product is 100% perfect, the price for VMware vSAN could still be improved, though it is good when compared to some of its competitors."

What is our primary use case?

Our customers who use VMware vSAN are in these industries: government, healthcare, education, and supply.

What is most valuable?

The most valuable feature of VMware vSAN is that it's easy to manage and it's also comfortable to use. Another unique feature is its hardware upgrade, but I'm unsure if this is also present in other players in the market. Upgrade and authorization for this product is very easy. Deployment of VMware vSAN is also easy. Everything in this product is perfect.

What needs improvement?

As no product is 100% perfect, the price for VMware vSAN could still be improved, though it is good when compared to some of its competitors.

For how long have I used the solution?

We've been working with VMware vSAN for seven years.

What do I think about the stability of the solution?

This product is stable and comfortable to use.

How are customer service and support?

Technical support for VMware vSAN is very good.

How was the initial setup?

This product is easy to set up. It is easy to deploy.

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

If you compare the price of VMware vSAN with other players like Nutanix and Cisco, its price is good, but could still have some improvement.

Which other solutions did I evaluate?

We evaluated Nutanix and Cisco.

What other advice do I have?

We are a partner of different vendors, e.g. Dell, VMware, Microsoft, AWS, Azure, etc. As we are a partner, we don't use the technology. It's our customers who use it. We've been working with the newest model of VMware vSAN.

There are four engineers who handle the deployment and maintenance of this product.

I strongly recommend VMware vSAN to others because it is easy to manage, especially if you compare it with traditional server and network storage solutions. It's also easy to deploy. Upgrade and authorization for this product is also very easy. These are the reasons why I strongly recommend VMware vSAN to people looking into using it.

I'm giving VMware vSAN a score of ten out of ten.

Disclosure: My company has a business relationship with this vendor other than being a customer: Partner
PeerSpot user
reviewer917832 - PeerSpot reviewer
Senior Director at a tech vendor with 201-500 employees
Real User
Provides interoperability between VMware products but needs more support for applications
Pros and Cons
  • "VMware comes with different stacks like VMware Cloud Foundation, which is integrated with different VMware modules. There's interoperability between VMware products."
  • "I would like to see more support for applications. I think currently it only supports applications between two vSAN clusters."

What is most valuable?

VMware comes with different stacks like VMware Cloud Foundation, which is integrated with different VMware modules. There's interoperability between VMware products. 

Another good feature is that you can create profiles for each VM. You can mirror one set of VMs according to another set of VMs. You can also define the quality of service for that profile.

What needs improvement?

I would like to see more support for applications. I think currently it only supports applications between two vSAN clusters. I heard that VMware is planning to have applications using vSAN at the hypervisor layer. I'm not sure whether it's available or it's being planned for the next release. I would prefer it to be on the storage layer than on the hypervisor layer.

For how long have I used the solution?

I've been working with VMware vSAN for two years.

What do I think about the stability of the solution?

I haven't had any issues with the stability of VMware vSAN.

What do I think about the scalability of the solution?

I haven't had any issues with scalability, but I think historically it supports only 64 nodes. It's a VMware limitation, but in our deployment in Sri Lanka, hardly any customers use that many nodes. If you consider that aspect, then scalability is okay. The largest customer we have here uses two nodes.

For Nutanix, there is no such limit as far as I know.

How are customer service and support?

I'm not happy with the VMware support. There are so many delays attributed to different reasons, like when you transfer the case from one engineer to the other, the second engineer is not aware of what the first engineer has done, so we need to update the second engineer from the beginning. 

Their response is also not that fast. We have seen that sometimes the competency of the backend engineers is not that high, and because of that VMware support is a bit of a concern for us. Apart from that, I don't have many issues with the product.

How was the initial setup?

Setup is not that difficult. We have had a few issues with the implementation. Initial setup is not as straightforward as Nutanix.

Which other solutions did I evaluate?

Compared to Nutanix, the design of VMware vSAN is probably the highest in the marketplace in terms of market penetration. I think it's number one, and Nutanix is not that far behind.

From an upgrade perspective, it's not as straightforward compared to a Nutanix. You need to do a lot of checks and balances before you do the upgrade. With Nutanix, you don't need to worry about it at all, probably because those nodes are coming from Nutanix itself. Because of that, they kind of keep everything to a single file where all these checks will be done initially when you run it. With vSAN, the server could be coming from different vendors like HP or Huawei. So it won't be that easy to come up with a single package to check all of these formula licenses because the upgrade is not that smooth compared to Nutanix.

What other advice do I have?

I would rate this solution 7 out of 10.

My advice is to plan well which workload you're going to use for VMware vSAN. Not all workloads are suitable for VMware vSAN. Before using VMware vSAN, you should consider implementation planning, network sites, and group layout.

Disclosure: I am a real user, and this review is based on my own experience and opinions.
PeerSpot user
Buyer's Guide
Download our free VMware vSAN Report and get advice and tips from experienced pros sharing their opinions.
Updated: October 2024
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Buyer's Guide
Download our free VMware vSAN Report and get advice and tips from experienced pros sharing their opinions.