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IBM Spectrum Scale vs VMware Software Defined Storage comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Dec 5, 2024

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
Sponsored
Ranking in Software Defined Storage (SDS)
9th
Average Rating
8.8
Reviews Sentiment
7.5
Number of Reviews
39
Ranking in other categories
All-Flash Storage (12th), File and Object Storage (8th)
IBM Spectrum Scale
Ranking in Software Defined Storage (SDS)
10th
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
14
Ranking in other categories
Cloud Software Defined Storage (1st)
VMware Software Defined Sto...
Ranking in Software Defined Storage (SDS)
14th
Average Rating
8.2
Reviews Sentiment
6.9
Number of Reviews
7
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of February 2026, in the Software Defined Storage (SDS) category, the mindshare of Pure Storage FlashBlade is 3.4%, down from 4.4% compared to the previous year. The mindshare of IBM Spectrum Scale is 3.5%, down from 4.5% compared to the previous year. The mindshare of VMware Software Defined Storage is 2.3%, up from 0.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Software Defined Storage (SDS) Market Share Distribution
ProductMarket Share (%)
Pure Storage FlashBlade3.4%
IBM Spectrum Scale3.5%
VMware Software Defined Storage2.3%
Other90.8%
Software Defined Storage (SDS)
 

Featured Reviews

MikaelHellström - PeerSpot reviewer
IT Manager at Regin Dalarna
Has handled backup storage needs reliably and supports seamless upgrades
In environments requiring high throughput and low latency, Pure Storage FlashBlade provides high throughput and normal latency, but we do not have any application that requires low latency right now, so the latency of three to five milliseconds is considered kind of high. Pure Storage FlashBlade's ability to integrate with enterprise applications is not important for us, as we only want to present an S3 bucket for our backup, which we have done, and it works very fast. We use the Purity software's data reduction techniques; we have a backup software that compresses everything before sending it to the S3 bucket, achieving a data reduction of 1.1 to one. I would recommend Pure Storage FlashBlade to other companies because it's a very fast and scalable solution for anyone who needs it. On a scale of 1-10, I rate this solution an 8.
Sachin Prakash - PeerSpot reviewer
Assistant Consultant at a tech vendor with 10,001+ employees
Has optimized performance using cluster deployment and distributed file access but needs better visibility into network dependencies
IBM Spectrum Scale being software-based storage allows users to utilize any hardware supported or defined by IBM without dependency on physical hardware provided by IBM. This is one of the features I appreciate most because if you have existing infrastructure at your site but don't want to reinvest in hardware, you can purchase IBM Spectrum Scale software and deploy it as software-defined storage. Users can comfortably access data from their host to the storage host without relying on new network setup when deploying GPFS as it uses the existing corporate network. However, high-speed ethernet network is required. By adding switches to the same network where client hosts reside and deploying GPFS storage array, any file system created on the storage cluster can grant export permissions determining which hosts can access specific file systems. These hosts can directly mount them as remote file systems. The process is simpler compared to defining IQN for providing access to client hosts. Creating a cluster for clients with virtual machines or physical Linux/Windows machines requires installing GPFS services on client nodes, which creates a client cluster. Access is defined on the storage cluster for the particular client cluster, allowing all hosts in that client cluster to mount file systems with granted permissions.
Mohammad Jundiah - PeerSpot reviewer
Solutions Architect at QDS
Data security and performance excel but integration and licensing need improvement
I used Nutanix for its hyper-converged infrastructure capabilities and VMware Site Recovery for disaster recovery.  Additionally, I worked with VMware Software Defined Storage both internally and with partners to consolidate servers into one solution The most valuable features of VMware Software…

Quotes from Members

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

Pros

"The ease of deployment and management has helped us simplify our storage. We also do not have to worry about capacity management as much. A lot of these things are native to Pure Storage."
"What I like best about Pure Storage FlashBlade is its object storage functionality, plus it has fast underlying hardware. Pure Storage FlashBlade is also very stable. I find its stability one of its valuable features."
"The main feature I have found to be product replication."
"It performs well and it is also very fast."
"It has also helped to simplify storage for us in the way that it's easy to manage. Their automatic monitoring really helps when things break or are about to break. They see a problem coming and alert us even before our own system does."
"The initial setup is pretty easy and simple."
"We can capacity plan at a greater level than we used to."
"The most valuable features are the Metro clustering, and disaster recovery."
"The high performance of the solution is its most valuable aspect. If you compare it to other storage solutions, it's much better."
"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."
"We can have multiple systems within the same file system."
"IBM Spectrum Scale being software-based storage allows users to utilize any hardware supported or defined by IBM without dependency on physical hardware provided by IBM."
"I find IBM Spectrum Scale to be an excellent product known for its fast parallel file system."
"It has been pretty reliable throughout the years. As far as capacity is concerned, it can handle most heavy loads."
"It is incredibly scalable and stable."
"We are using it for monitoring all of our storage."
"This is an easy-to-use product for adding flexibility to your storage solution."
"The most valuable features of the solution are that it is easy to deploy and the support is really good."
"The most valuable features of VMware Software Defined Storage are scalability, high availability, and performance."
"VMware Software Defined Storage gives higher availability against data corruption."
"The most valuable features of VMware Software Defined Storage are scalability, high availability, and performance."
"The single management panel is the main feature that is wonderful for the customer."
"The best part of the solution is that you can actually scale up to a large number of operating systems without additional hardware."
"The solution is simple to configure and provides good performance and less footprint."
 

Cons

"I would also like to see better support for CIFS workloads."
"The speed could be improved."
"The documentational aspect of FlashBlade 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."
"There is some room for new features related to authentication and integration with Kubernetes, and other solution using S3 Bucket."
"I have not seen ROI."
"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."
"I would like to see better integration."
"Integration with other vendors is not available."
"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."
"There can be improvements in fault tolerance and making erasure coding faster."
"The biggest problem is that it is not able to provide block storage."
"Maybe it needs integration with HA."
"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."
"Initially, stability was a concern as we encountered numerous issues and errors."
"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 performance is not as good as some competing products and reporting can be improved."
"The license model of the product is an area of concern where improvements are required."
"The solution has some limitations in terms of replication to remote sites or cloud infrastructure, which need improvement."
"It doesn't have the ability to be deployed on any kind of hardware and network connectors."
"VMware Software Defined Storage should include a shared database on a standard version."
"Simplifying the licensing model and making it cheaper would improve the solution."
"There is room for more integrations and plugins into more storages."
"I'd like to see improved hardware compatibility"
 

Pricing and Cost Advice

"Licensing fees are paid yearly."
"The product is very expensive."
"I have seen ROI. It has allowed me to increase the density of my VMs without having to purchase anything additional."
"The price is a little high."
"I rate the tool's pricing a seven to eight out of ten."
"The pricing for FlashBlade is between cheap and moderate."
"Support is a separate line item. Support is a different cost, but whatever your support is now, that's what you're going to pay forever. If your support's $100 today, six years from now it's $100. It doesn't fluctuate unless you upgrade it, or change it, etc."
"It's a costly solution, but Pure Storage FlashBlade doesn't require additional licenses. All of the software is combined into one bundle."
"The licensing model is complex and depends on factors such as the number of processing cores and the amount of storage."
"The licensing is based on the number of terabytes."
"The solution is costly but reliable."
"I believe there is a yearly licensing fee of around $2000 - $5000. I don't think there are additional costs above that but it depends on the type of infrastructure you're booting."
"The product is quite expensive and is among the most expensive for this type of solution."
"VMware Software Defined Storage is a slightly expensive solution."
"A single socket costs you around US $6,000 for three years. At a minimum, you have a three load cluster for a medium or enterprise-scale company. It can get quite expensive because you're likely to need four to six sockets on the other side. It comes to around $30,000."
"The solution is very expensive."
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Top Industries

By visitors reading reviews
Financial Services Firm
12%
Manufacturing Company
10%
Computer Software Company
10%
Government
7%
Financial Services Firm
19%
Manufacturing Company
9%
Educational Organization
7%
Healthcare Company
7%
No data available
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business11
Midsize Enterprise11
Large Enterprise21
By reviewers
Company SizeCount
Small Business6
Large Enterprise8
By reviewers
Company SizeCount
Small Business3
Large Enterprise6
 

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...
What is your experience regarding pricing and costs for Pure Storage FlashBlade?
Regarding pricing, it is okay; we needed exactly this in size, and the price was a lot lower than competitors, making...
What needs improvement with Pure Storage FlashBlade?
In my opinion, one way Pure Storage FlashBlade can be improved is by having more compatibility between the FlashArray...
What is your experience regarding pricing and costs for IBM Spectrum Scale?
IBM Spectrum Scale functions as software-based storage, allowing users to utilize any hardware supported or defined b...
What needs improvement with IBM Spectrum Scale?
The system relies heavily on ethernet networking, and when issues occur, we must consult with the network team to inv...
What is your primary use case for IBM Spectrum Scale?
My personal use of this product is for parallel writing or reading files.
What is your experience regarding pricing and costs for VMware Software Defined Storage?
The price of VMware Software Defined Storage is on the pricey side, rated four out of five in cost. There is room for...
What needs improvement with VMware Software Defined Storage?
There is room for more integrations and plugins into more storages. More automation, such as using Playbook on Ansibl...
What is your primary use case for VMware Software Defined Storage?
I used Nutanix for its hyper-converged infrastructure capabilities and VMware Site Recovery for disaster recovery. Ad...
 

Also Known As

No data available
No data available
VMware SDS
 

Overview

 

Sample Customers

ServiceNow, Mercedes-AMG Petronas Motorsport, Dominos, Man AHL
Information Not Available
Helse Nord, Sky
Find out what your peers are saying about IBM Spectrum Scale vs. VMware Software Defined Storage and other solutions. Updated: February 2026.
881,733 professionals have used our research since 2012.