IBM Spectrum Scale vs VMware vSAN comparison

IBM and VMware are both solutions in the Software Defined Storage (SDS) category. Additionally, 100% of IBM users are willing to recommend the solution, compared to 87% of VMware users who would recommend it.

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Executive Summary

We performed a comparison between IBM Spectrum Scale and VMware vSAN based on real PeerSpot user reviews.

Find out in this report how the two Software Defined Storage (SDS) solutions compare in terms of features, pricing, service and support, easy of deployment, and ROI.

To learn more, read our detailed IBM Spectrum Scale vs. VMware vSAN Report (Updated: June 2025).

Buyer's Guide

IBM Spectrum Scale vs. VMware vSAN

June 2025

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Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Categories and Ranking

Pure Storage FlashBlade

Featured Reviews

Eric Black

Solutions Architect at Recovery Point Systems

The ability to leverage multi-tenancy along with immutability is a huge benefit for us

The only thing I feel FlashBlade is missing is the SOS API. If it had SOS API, that would put it well over the top. Veeam Backup specifically has started to streamline their API, and they are doing that with SOS API. They have optimized it. Any of the S3 devices out there that support this SOS API can have far more API calls at once. On our side, that translates to better restoration. With SOS API, it can leverage far more restorations at a single given time or read from the device in simple terms. That results in maximizing the output and throughput from the device itself.

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Bernd Stroehle.

Enterprise Architect at kosakya

Deliver improved performance in data processing and foster extensive AI initiatives

I find IBM Spectrum Scale to be an excellent product known for its fast parallel file system. It achieved the best results when integrated with IBM hardware. Even though it is complex, it provided significant performance advantages in large-scale data management. Its fault tolerance mechanisms and integration capabilities make it popular for extensive AI initiatives and data processing tasks for organizations like Daimler Benz and Bosch.

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Pramod-Talekar

Sr Service Engineer at a healthcare company with 1,001-5,000 employees

Enables efficient multi-environment cluster deployment and resource management with versatile features

While VMware vSAN is quite comprehensive, if we are running multiple infrastructures, applications, databases, and other elements, having a diagnostic tool to identify the actual problem area, whether application-side or infrastructure-side, would be beneficial. A proper monitoring tool that encompasses both applications and infrastructure would help in quickly resolving issues.

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Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Pros

"The most valuable features of this solution are the rewrite speed and the nonstop services."

"The initial setup was straightforward. If you know how to plug in power and network you're pretty much qualified. They were on site to configure the network, the box to fit into our network architecture. Other than that, we self-managed from there."

"The most valuable feature is Safe Mode."

"The snapshots, replication, and the ability to have immutable blades are the most valuable features. You're putting data snapshots out in those blades, and they cannot be touched. Its performance is great."

"It has absolutely simplified our storage because the dashboards on the consoles show a clear understanding of where you are, and it is also very easy to provision. This been a big help for our teams."

"Pure Storage FlashBlade is user-friendly. It's replication feature is great because it has active replication and active DR. That's the beauty of the product. It's a perfect solution for block storage."

"The initial setup is pretty easy and simple."

"Using this solution has made our backups more reliable."

More Pure Storage FlashBlade pros

"I would rate my overall experience with IBM Spectrum Scale as nine out of ten."

"The profile share is a valuable feature."

"It has been pretty reliable throughout the years. As far as capacity is concerned, it can handle most heavy loads."

"We can have multiple systems within the same file system."

"Technical support has been very helpful. They provide us with pretty good solutions that we can implement moving forward."

"We use GPFS Scale for parallel file access, the file management, and it's an essential part of our operations."

"I find IBM Spectrum Scale to be an excellent product known for its fast parallel file system."

"It is a scalable solution."

More IBM Spectrum Scale pros

"This product has very good performance when it comes to virtualization storage and works well with solutions such as SAP HANA, Exadata, Hadoop, and Big Data Analytics."

"The most valuable features for us are the ability to scale out the nodes independently, and the flexibility of the nodes. We can put almost any type of server in there with our connectivity and everything works great."

"A one-stack solution from one vendor is the main benefit here."

"The migration of servers feature makes server rack maintenance easy."

"It's stable and scalable. Also, you can virtualize SAN so that you don't have to have a separate storage area network and can have your computer and storage on the same box or computer."

"Adding new nodes and expanding vSAN forward is simple and non-disruptive for a lot of our customers."

"The most valuable features are its performance, simplicity, and synchronicity with vSphere."

"Storage policies are used to perform operations in the VMs. This feature allows you to create storage policies for VMs to get performance, high availability, I/O policies, etc."

More VMware vSAN pros

Cons

"An area for improvement in Pure Storage FlashBlade is its price. It could be reduced. The technical support for Pure Storage FlashBlade also needs improvement. It used to be good, with more experienced engineers. Nowadays, it isn't, and it takes longer for support to solve problems."

"We initially encountered challenges with the assembly process due to issues with the documentation required during setup, an area where Pure Storage needs improvement."

"Its configuration should be easier."

"To improve FlashBlade, some analysts suggest enhancing its handling of relational database management systems and SQL queries."

"File storage needs a lot of improvement. Mainframe connectivity also needs improvement because it requires additional components to be integrated with Pure Storage FlashBlade. If you want to keep your backup data, then this becomes an even more expensive solution because Pure Storage FlashBlade will not be able to meet your backup needs."

"Commvault has mainly driven the Analytics, providing data and reports. However, the product has room for improvement, especially regarding storage analytics. Upgrading firmware has caused issues, requiring feature disabling to revert to traditional backups. The firmware upgrades sometimes affect Commvault backups."

"Its configuration should be easier."

"On our dedupe during our initial buy, we were expecting a number a little higher like 4x. However, we are getting about 3.6. While it is close enough, it doesn't quite hit the numbers. So, this has been a challenge."

More Pure Storage FlashBlade cons

"They should probably simply the Red Hat implementation portion. This portion was not as straightforward as I would like it to be."

"This is probably the biggest challenge, getting everything upgraded, because it just takes time. We wish it was a faster solution to be able to do everything at once, but you have do each node individually. The more nodes, the longer it takes."

"It would be helpful if there was a graphical user interface that could walk you through the deployment process. The instructions surrounding setup aren't the best. They need to be more step-by-step."

"I believe there is no graphic user interface, so they should include it."

"The main issue that we have now is with the encryption. They want to use more metrics in encryption, which is not working very well."

"Integration with other vendors is not available."

"There can be improvements in fault tolerance and making erasure coding faster."

"The pricing and licensing model for this solution are complex and it is sometimes difficult to explain it to customers."

More IBM Spectrum Scale cons

"The price can be reduced. Small businesses cannot afford this solution."

"This solution would benefit from better collaboration with Cisco for driver updates."

"If the support could be provided more quickly, it would be very helpful."

"The customer service is good but there is a cost for it. It does not come free."

"I'd like to see better integration with the Update Manager, with respect to firmware updates for hardware."

"The interface is a little complicated, it could be simplified with more graphical gadgets. We have many servers, and the built-in functions, such as rate configuration, are a bit complex."

"It needs to be vanilla. There shouldn't be any custom drivers, any custom anything. It should just be, "Hey, you know what? These drivers are going to work for this version, the next version, and the following version after that." That's the difficulty in this. It takes too much upkeep... The main issue is drivers. Every time we move to a new vSAN version, we're having problems finding the correct drivers for the vendor."

"I think it needs to be more cost-effective. I would also say that even though the capacity is good, there is also room for improvement there. Also, they could improve the security of the system."

More VMware vSAN cons

Pricing and Cost Advice

"The price of this solution could be made more affordable."

"The product is very expensive."

"It's a costly solution, but Pure Storage FlashBlade doesn't require additional licenses. All of the software is combined into one bundle."

"I have seen ROI. It has allowed me to increase the density of my VMs without having to purchase anything additional."

"The price could be cheaper."

"Our customers have seen a reduction in TCO."

"The pricing for FlashBlade is between cheap and moderate."

"The price is a little high."

More Pure Storage FlashBlade pricing and cost advice

"The solution is costly but reliable."

"The licensing is based on the number of terabytes."

"The licensing model is complex and depends on factors such as the number of processing cores and the amount of storage."

"The price is okay."

"There is a license required for this solution, it is a one-time payment. However, if they want support for the solution, it can be paid annually or for three years."

"It is not a subscription model. It is a purchase model, but it is very important that you also buy technical support from VMware. This is probably the only disadvantage of vSAN. It depends on the use case, but it can be very expensive."

"On a scale from one to ten, where one is cheap and ten is expensive, I rate the solution's pricing a seven out of ten."

"Its price could be improved."

"Users may also start off with the demo version of the tool. After you learn to use the solution, you can buy it if it is beneficial."

"Perhaps a bundle, like Essentials, would allow more businesses to make the leap to the product."

"Enterprise customers can customize their licenses according to their own needs and budget."

More VMware vSAN pricing and cost advice

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Top Industries

By visitors reading reviews

Computer Software Company

14%

Educational Organization

12%

Financial Services Firm

11%

Manufacturing Company

Financial Services Firm

19%

Computer Software Company

13%

Manufacturing Company

13%

Educational Organization

24%

Computer Software Company

12%

Manufacturing Company

Financial Services Firm

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

Questions from the Community

What do you like most about Pure Storage FlashBlade?

The tool's most valuable feature is its fast performance, especially in handling snapshots. It helps during power out...

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What is your experience regarding pricing and costs for Pure Storage FlashBlade?

The pricing for FlashBlade is between cheap and moderate. FlashBlade is worth the money due to the experience and per...

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What needs improvement with Pure Storage FlashBlade?

Its configuration should be easier. There should be easier language for the configuration.

See all answers

What do you like most about IBM Spectrum Scale?

It is a scalable solution.

See all answers

What is your experience regarding pricing and costs for IBM Spectrum Scale?

IBM Spectrum Scale is very expensive with complex pricing models usually based on the amount of storage used or the n...

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What needs improvement with IBM Spectrum Scale?

There is room for improvement in the web interface. There could be more information available, such as charts and gra...

See all answers

What Is The Biggest Difference Between vSAN And VxRail?

While both run on the vSAN technology from VMware, vSAN needs to be deployed on vSAN ready nodes while VxRail is an e...

See all answers

Which would you choose - Nutanix Acropolis AOS or VMware vSAN?

We found the reduced power consumption with Nutanix Acropolis AOS a very attractive feature. We also like the interfa...

See all answers

How does HPE Simplivity compare with VMware vSAN?

HPE SimpliVity is a hyper-converged infrastructure solution that is primarily geared to mid-sized companies. We resea...

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Comparisons

Dell PowerScale (Isilon) vs Pure Storage FlashBlade

Compared 20% of the time

Red Hat Ceph Storage vs Pure Storage FlashBlade

Compared 11% of the time

MinIO vs Pure Storage FlashBlade

Compared 11% of the time

VAST Data vs Pure Storage FlashBlade

Compared 10% of the time

Pure Storage FlashArray vs Pure Storage FlashBlade

Compared 9% of the time

More Pure Storage FlashBlade Competitors

Red Hat Ceph Storage vs IBM Spectrum Scale

Compared 27% of the time

DDN IME vs IBM Spectrum Scale

Compared 14% of the time

Portworx Enterprise vs IBM Spectrum Scale

Compared 12% of the time

Red Hat Gluster Storage vs IBM Spectrum Scale

Compared 8% of the time

IBM Spectrum Accelerate vs IBM Spectrum Scale

Compared 7% of the time

More IBM Spectrum Scale Competitors

VxRail vs VMware vSAN

Compared 18% of the time

Microsoft Storage Spaces Direct vs VMware vSAN

Compared 15% of the time

HPE SimpliVity vs VMware vSAN

Compared 8% of the time

Dell PowerFlex vs VMware vSAN

Compared 7% of the time

Red Hat Ceph Storage vs VMware vSAN

Compared 6% of the time

More VMware vSAN Competitors

Product Reports

Buyer's Guide

Pure Storage FlashBlade

June 2025

Download Pure Storage FlashBlade product report

Buyer's Guide

IBM Spectrum Scale

June 2025

Download IBM Spectrum Scale product report

Buyer's Guide

VMware vSAN

June 2025

Download VMware vSAN product report

Also Known As

No data available

vSAN

Overview

FlashBlade is the industry’s most advanced scale-out storage for unstructured data, powered by a modern, massively parallel architecture to consolidate complex data silos (like backup appliances and data lakes) and accelerate tomorrow’s discoveries and insights.

Pure Storage

IBM Spectrum Scale is a cluster file system that provides concurrent access to a single file system or set of file systems from multiple nodes. The nodes can be SAN attached, network attached, a mixture of SAN attached and network attached, or in a shared nothing cluster configuration. This enables access to this common set of data to support a scale-out solution or to provide a high availability platform. IBM Spectrum Scale has many features beyond common data access including data replication, policy based storage management, and multi-site operations. You can create a cluster of AIX nodes, Linux nodes, Windows server nodes, or a mix of all three. IBM Spectrum Scale can run on virtualized instances providing common data access in environments, leverage logical partitioning, or other hypervisors. Multiple IBM Spectrum Scale clusters can share data within a location or across wide area network (WAN) connections.

IBM

VMware vSAN is a software-defined storage product that is used in collaboration with VMware ESXi hypervisor and that provisions and manages storage based on policies, regardless of the underlying hardware. The solution enables you to prime your business for growth through its seamless evolution (it is integrated with vSphere and requires no new tools), its flexibility, and its multi-cloud capabilities. As an industry-leading software, VMware vSAN provides high levels of performance with minimal impact on CPU and memory.

VMware vSAN Features

VMware vSAN has many valuable key features. Some of the most useful ones include:

Storage policy-based management (SPBM): VMware vSAN supports storage policy-based management for automated management of storage profiles.

Software-defined data-at-rest encryption: With this VMware vSAN feature, you can prevent unauthorized access of data at rest.

Multiple nodes: VMware vSAN provides clusters that can include as few as 2 nodes or as many as 64 nodes.

High security and availability: VMware vSAN offers stretched clusters, allowing more than one virtualization host server to be used in the same setup, promoting higher security as well as availability.

Deduplication: VMware vSAN’s deduplication compresses data to ensure efficient storage management and security.

HCI mesh updates: VMware vSAN clusters can share storage capacity with non-HCI Sphere clusters and can adopt HCI without having to scale computing resources and storage or replace existing servers.

Simplified file services: With VMware vSAN’s file services, backup of file shares is simplified. You can use APIs that allow backup and recovery software vendors to integrate with your VMware vSAN file services, which enables backup software to track new data and add scalability enhancements to files.

VMware vSAN Benefits

There are many benefits to implementing VMware vSAN. Some of the biggest advantages the solution offers include:

Reduced total cost of ownership (TCO): VMware vSAN helps you reduce upfront costs for businesses because it can be easily deployed on inexpensive x86 servers. In addition, its highly scalable infrastructure and quick deployment also save organizations time and money, making it an efficient storage solution.

Good manageability: VMWare vSAN is easy to set up, manage, and provision, without sacrificing performance.

Scalability: VMware vSAN is agile and allows administrators to scale storage on demand, quickly, and efficiently via policies and rules.

Simplicity: VMWare vSAN is simple to configure since it is embedded in the vSphere hypervisor. Installing it using the vSphere Web Client can be done quickly.

Reduced risk: VMWare vSAN reduces the risk associated with digital transformations by utilizing existing tools, skill sets, and solutions.

Reviews from Real Users

Below are some reviews and helpful feedback written by PeerSpot users currently using the VMware vSAN solution.

PeerSpot user Yves S., CEO, Cloud Evangelist at Comdivision Consulting GmbH, says, “vSAN gives us a lot of advantages when we need to expand resources. We have an overall larger host infrastructure, and we split that up for specific customer test and use cases. In that specific scenario, we can easily add more hosts or reduce the number of hosts in the environment.”

A reviewer who works in Infrastructure Security explains, “The ease of use is great. The initial setup and upgrade process was pretty straightforward. And, technical support is great.”

Laurent N., Director at Softlogic, comments, "The feature that I have found most valuable is that it is easy to deploy. It is easy to create and delete virtual servers. It is easy to create the load balancing and the clustering."

VMware

Sample Customers

ServiceNow, Mercedes-AMG Petronas Motorsport, Dominos, Man AHL

Information Not Available

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Buyer's Guide

IBM Spectrum Scale vs. VMware vSAN

June 2025

Free Report: IBM Spectrum Scale vs. VMware vSAN

Find out what your peers are saying about IBM Spectrum Scale vs. VMware vSAN and other solutions. Updated: June 2025.

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