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: July 2025).

Buyer's Guide

IBM Spectrum Scale vs. VMware vSAN

July 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

"It is very easy to use, and it is very fast."

"Speed and ease of use are the two most valuable features."

"We can capacity plan at a greater level than we used to."

"The most valuable feature of this solution is performance."

"The performance of FlashBlade is excellent. It does not necessarily leverage the SOS API that some of the newer products leverage, but I found its speed pretty much on par and comparable. It is fast, and it does what it is supposed to do."

"The initial setup is pretty easy and simple."

"It helps simplify our storage, because the user interface is very simple and the installation is easy."

"The most valuable features are the Metro clustering, and disaster recovery."

More Pure Storage FlashBlade pros

"It is a scalable solution."

"Its great servicing high availability. That is what it is used for."

"GPFS monitoring is the best feature."

"The most valuable feature is the ability to share files across different platforms."

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

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

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

"It makes our file system sharing a lot easier, even across different continents. We have had file systems shared across different continents with no performance degradation."

More IBM Spectrum Scale pros

"The most valuable feature is the ability to continue our business needs and have higher visibility. It has definitely increased our business productivity levels."

"It's easy to use."

"There is not a lot of maintenance required."

"Stability-wise, I rate the solution a ten out of ten."

"The ability to have a disaster recovery option for our end-users by being able to use VDI and the vSANs, and the ability to do replication across multiple data centers, are valuable to us."

"The scalability has been quite good."

"It's completely hyper-converged, so it's very convenient."

"I have found that the multi-homing feature is very valuable in VMware vSAN. It is an easy-to-use solution."

More VMware vSAN pros

Cons

"I would like to see better integration."

"They need better integration with public clouds along with a better hybrid solution."

"I would also like to see better support for CIFS workloads."

"Its configuration should be easier."

"The speed could be improved."

"In the realm of micro-services, I think that Pure Storage can do well if they start getting in there and making their arrays more micro-services ready."

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

"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."

More Pure Storage FlashBlade cons

"The solution's pricing could be better."

"Maybe it needs integration with HA."

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

"I wish there were some graphical user interface to access the GPFS file system creation and monitoring."

"The initial setup is complex, especially if trying to avoid erasure coding, as it requires more discs. Avoiding erasure coding can significantly increase costs."

"We do have some issues where Spectrum Scale does not work as expected. We have seen our Spectrum Scale servers go down unexpectedly, but because we have a cluster, it does not take out the entire organization."

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

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

More IBM Spectrum Scale cons

"It doesn't seem like it gives the performance that an actual SAN would give for heavy IOPS, read/writes."

"I would like to see more comprehensive lifecycle management. The current path and process for upgrading or updating the firmware, as well as the storage controller software to interact with that firmware, is fairly manual and not very well documented. A little more time and effort spent on the documentation of the lifecycle management for vSan would be really great."

"We do see weird things crop up every now and again. It will say that a drive gets kicked off even though it's fine, and we have to re-add it."

"I would love to see vSAN integrate Persistent Memory and NVDIMMs. I know they're supposed to be working on an elastic tier so that we don't have the issues with destaging from the cache to the capacity. Those are the things that I'm interested in."

"While I like the replication and compression features, there is a problem with them running too slowly."

"Dedupe in non flash drives can be improved."

"I would like for the next release to be a bit cheaper."

"We would like to see even more storage capacity."

More VMware vSAN cons

Pricing and Cost Advice

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

"In my opinion, we have paid the right price for the product. I don't think that it is too much or too little."

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

"I understand that it is competitively priced compared to other brands."

"I feel that the price could always be lowered."

"Pure Storage FlashBlade is a hardware appliance, and it's very expensive if you compare its price with other solutions. You can get the same features and benefits from its competitor, VAST Data, but for half the price of Pure Storage FlashBlade."

"The price could be cheaper."

"It is within reason for what you get. From what we have found comparing it to other vendors, it is in the same range as others. Given the choice, we would definitely redeploy it based on the cost."

More Pure Storage FlashBlade pricing and cost advice

"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 solution is costly but reliable."

"VMware is not a cost effective solution, especially if you have a Microsoft shop. In this case, you would have to purchase the VMware license when there are already Hyper-V solutions that could do it for much cheaper."

"I feel the pricing to be reasonable."

"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."

"We did consider other hyperconverged solutions. It usually came down to price. vSan was the most cost effective thing."

"From a cost perspective, it is expensive. From a usability perspective, it reduces the overhead costs attached to its users' servers."

"The product's price has been increasing lately...VMware vSAN is expensive."

"It is not that expensive, and it is not even cheap. If it is designed in a proper way, it has good pricing, but if you do oversizing, the price will be high. There are different licensing models."

"The cost of the solution is high and if it could be reduced the customers would be very happy."

More VMware vSAN pricing and cost advice

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Top Industries

By visitors reading reviews

Computer Software Company

13%

Financial Services Firm

12%

Manufacturing Company

10%

Government

Financial Services Firm

20%

Manufacturing Company

12%

Computer Software Company

10%

Educational Organization

Computer Software Company

14%

Manufacturing Company

11%

Financial Services Firm

Government

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	11
Midsize Enterprise	11
Large Enterprise	20

By reviewers
Company Size	Count
Small Business	6
Large Enterprise	7

By reviewers
Company Size	Count
Small Business	98
Midsize Enterprise	58
Large Enterprise	128

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 of Pure Storage FlashBlade is expensive compared to other products I used from other companies in the pas...

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What needs improvement with Pure Storage FlashBlade?

I believe there is not much improvement needed because they have everything we need, but the interface is a little bi...

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...

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What is your primary use case for IBM Spectrum Scale?

My personal use of this product is for parallel writing or reading files.

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...

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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...

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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 19% of the time

MinIO vs Pure Storage FlashBlade

Compared 10% of the time

Red Hat Ceph Storage vs Pure Storage FlashBlade

Compared 10% of the time

Pure Storage FlashArray vs Pure Storage FlashBlade

Compared 10% of the time

VAST Data vs Pure Storage FlashBlade

Compared 9% of the time

More Pure Storage FlashBlade Competitors

Red Hat Ceph Storage vs IBM Spectrum Scale

Compared 21% of the time

DDN IME vs IBM Spectrum Scale

Compared 12% of the time

Portworx Enterprise vs IBM Spectrum Scale

Compared 11% of the time

Red Hat Gluster Storage vs IBM Spectrum Scale

Compared 8% of the time

IBM Spectrum Accelerate vs IBM Spectrum Scale

Compared 6% of the time

More IBM Spectrum Scale Competitors

VxRail vs VMware vSAN

Compared 19% 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 6% of the time

Red Hat Ceph Storage vs VMware vSAN

Compared 5% of the time

More VMware vSAN Competitors

Product Reports

Buyer's Guide

Pure Storage FlashBlade

August 2025

Download Pure Storage FlashBlade product report

Buyer's Guide

IBM Spectrum Scale

August 2025

Download IBM Spectrum Scale product report

Buyer's Guide

VMware vSAN

August 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

July 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: July 2025.

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