Miriam Tover - PeerSpot reviewer
Service Delivery Manager at PeerSpot
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What is the biggest difference between HPE SimpliVity and VMware vSAN?

One of the most popular comparisons on IT Central Station is HPE SimpliVity vs vSAN.

People like you are trying to decide which one is best for their company. Can you help them out?

What is the biggest difference between HPE SimpliVity and vSAN? Which of these two solutions would you recommend to a colleague evaluating HCI solutions and why?

Thanks for helping your peers make the best decision!

PeerSpot user
4 Answers
Solutions Consultant at Dell
Real User
Aug 1, 2019

There are a lot of technical differences between both solutions but there are a few notes that are key to understanding the differences.

1. SimpliVity is not tied to a single hypervisor; rather it can work with KVM, Hyper-V and VMware hypervisors.
2. VMware vSAN is kernel-integrated meaning it runs at a much lower level in the processor stack than SimpliVty. Depending on your workloads this may provide a small boost in performance.
3. To combat #2, SimpliVity uses a hardware accelerator in its systems that accelerates writes by acting as a cache and provides compression and deduplication acceleration. In some workloads, this may provide a small boost in performance.
4. While SimpliVity is only available on HPE servers since the acquisition, vSAN works on literally any x86 server so long as your hardware (most importantly drives and HBA's... avoid RAID controllers in hardware) is on the HCL. If you're a current HPE customer then this might not be an issue, but if you are an IBM, Dell, Cisco or Supermicro customer this might be a problem.
5. As an adjunct to #4, there are certified platforms from all the major manufacturers for vSAN; so-called "Ready Nodes" which provide a full stack of hardware that's on the vSAN HCL.
6. I've found support to be a mixed bag. While HPE will do some support of the hypervisor, it can become a "blaming" match between HPE and the hypervisor vendor when issues occur at that level. With vSAN you only have VMware to deal with. However, in fairness, I have found VMware to be very quick to blame hardware which can lead to some finger-pointing as well.
7. vSAN is also available as a "full-stack appliance" like Simplivity where a single vendor provides and supports everything in the stack; that being VxRail from Dell.
8. vSAN's integration into vCenter is obviously second-to-none in terms of storage management. Third-party plugins to vCenter are good but you get into the "two-software-vendors" duel again when calling for support.

General advice though, make sure to analyze your workloads properly before proceeding with any HCI solution. There are salespeople from a number of big companies, HPE and Dell in particular who will tell you that their HCI solution is the answer to ALL your problems. This is patently not true. Many workloads won't fit in HCI due to hardware, software or performance restrictions. HCI can be very cost-effective for general-purpose workloads for office type environments but lack the peak performance and custom components of a solidly-designed 3-2-1 solution (server, switch, SAN).

It's also worth noting that the sadly ignored solution of up to 4 servers attached to a shared SAS array of disks can still provide an incredibly low-cost yet highly performant VM cluster using your hypervisor of choice without having the extra layer of software or management for the storage, a SAS array is usually a set-it-and-forget-it setup. It lacks in scalability but for small deployments can be much more cost-effective than an HCI solution particularly one where you know you'll never grow it (remote offices for example).

Product comparison that may be of interest to you
Sales at a tech vendor
Real User
Aug 1, 2019

I would say the biggest difference is that SimpliVity is a Hardware and software HCI solution and vSAN is a software-only HCI solution. That being said, all the technical differences are related to those approaches. Each solution has its own advantages, for example, SimpliVity is really good with data optimization, compression and deduplication, for a big space workload you would probably need fewer nodes than vSAN, in the other hand vSAN has a unique integration with all VMware software suite, so if you are planning to do more advanced use of your platform you will probably have a more complete suite with the whole stack. Actually, when you plan to go for an HCI solution you should be looking for something else on top of just virtualizing storage workload, so that could be a good point between then. For those who would say that VMware will lock you up with the whole stack, HPE will do the same with SimpliVity, so you don´t have to look who is not going to tie you up, instead you should look for who has the better approach and what terms are the ones that I would like to be tied up and what I don´t.

Sales and Marketing Director, Commercial Accounts with 51-200 employees
Aug 1, 2019

The inline compression engine of HPE is very powerful (probably best in the industry). This makes backup and retention a simple and easy job. One of our clients was able to squeeze a nightly that ran 5+ hours into less than 60 mins.

it_user928887 - PeerSpot reviewer
Senior Vice President & Chief Information Officer at a hospitality company with 10,001+ employees
Jul 31, 2019

The simple answer is that a five year TCO analysis helped break the tie between two very good HCI solutions.

Find out what your peers are saying about HPE SimpliVity vs. VMware vSAN and other solutions. Updated: January 2023.
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Related Questions
Daniel Wicaksono - PeerSpot reviewer
System Engineer at astra credit companies
Feb 2, 2022
Hi community, I work as a System Engineer at a large Financial Services company (size: 1000+ employees). Currently, I've been looking at the following HCI solutions: Nutanix Acropolis AOS and VMware vSAN.  Which of them would you recommend to my company? Otherwise, should I explore any alternative enterprise solution? Please let me know why. Thanks in advance for your help!
2 out of 10 answers
General Manager at a computer software company with 11-50 employees
Jan 26, 2022
I strongly recommend you looking at dHCI Nimble or Alletra from HPE. 
Senior IT Engineer at Guard Automation AS
Jan 26, 2022
Hi.  We have deployed VmWare vSAN to some of our customers. The advantage with VmWare vSAN is that the vSAN software is integrated in ESX. So, you do not need to deploy virtual SAN as VM's. But you need a Witness VM, wich is a virtual ESX - so it will appear as two machines - little confusing in the beginning.  For small deployment (ROBO), you can have a two node cluster, with vcenter installed on the vSAN. This is a cost-effective solution. But keep in mind, the HCL from VmWare - all hardware has to be approved (on the vSAN Hardware Compability List). We have also been searching for a solution to replace the EOL HPE VSA (StorVirtual). Here we came across StoreMagic SvSAN - we have deployed this to a Hyper-V customer. It also runs on VMware vSphere. This is also a brilliant solution and very cost-effective. The deployment scenario is often ROBO (Remote Office Branch Office), but it can scale up.  In a two-node scenario, you can connect 10Gb Eth direct between the two nodes, for synchronization. This works for both VmWare vSAN and Store MAgic SvSAN.
Content Manager at PeerSpot (formerly IT Central Station)
Nov 7, 2021
Which is better and why?
See 1 answer
Nov 7, 2021
We found VMware’s vSAN was easy to set up, configure, and manage compared to other solutions we considered. It is best suited for small- to medium-sized organizations. It is easy to create load balancing and clusters and create and delete virtual servers using VMware VSan. The deduplication and compression are excellent. On the DevOps side, it would be more helpful if VMware vSAN could provide more automation. It would be an additional improvement if it integrated better with other platforms. Troubleshooting can be problematic; some of our clients need to monitor the solution on a daily basis, which is not so efficient. In terms of tiering and caching, Microsoft Storage Spaces Direct is wonderful. We found it to be very resilient and we never felt our data was at risk. You can build clusters as you want using various generations of hardware, which helps make this solution very scalable. The online documentation with Microsoft Storage Spaces Direct could be improved, though. We feel that this solution needs to have an intuitive streamline, which would make it more acceptable to clients. Currently, Microsoft Storage Spaces Direct does not offer a cloud version. Conclusion: When we were testing out HCI solutions, we were looking for clients that were primarily small- to medium-sized organizations, many of whom were already involved in partnerships with VMware. Our clients were very familiar with the product and happy with it. Overall VMware vSAN has a very simple structure that is very easy to use, implement and manage. The pricing is very competitive as well. Our team and clients are very happy using VMware vSAN.
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