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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)
8th
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)
16th
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 January 2026, in the Software Defined Storage (SDS) category, the mindshare of Pure Storage FlashBlade is 3.3%, down from 4.6% compared to the previous year. The mindshare of IBM Spectrum Scale is 3.7%, down from 4.5% compared to the previous year. The mindshare of VMware Software Defined Storage is 1.9%, 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 FlashBlade3.3%
IBM Spectrum Scale3.7%
VMware Software Defined Storage1.9%
Other91.1%
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.
MohammadJundiah - PeerSpot reviewer
Solutions Architect at Logicom Sales Inc
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 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."
"Speed and ease of use are the two most valuable features."
"It helps simplify our storage, because the user interface is very simple and the installation is easy."
"Pure Storage FlashBlade's scalability is one of the most valuable features, and importantly, it always works, allowing for seamless upgrades."
"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."
"I like its size. It is smaller than the other competitors. We can plug in many blades, and we can have data up to one terabyte."
"The most valuable features are the Metro clustering, and disaster recovery."
"We have integrated it with VMware. The integration process is pretty good. Especially with VMware, it helps with the capacity of it."
"The profile share is a valuable feature."
"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."
"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."
"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 can have multiple systems within the same file system."
"I would rate my overall experience with IBM Spectrum Scale as nine out of ten."
"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."
"The solution is simple to configure and provides good performance and less footprint."
"The most valuable features of VMware Software Defined Storage are scalability, high availability, and performance."
"The most valuable features of VMware Software Defined Storage are scalability, high availability, and performance."
"This is an easy-to-use product for adding flexibility to your storage solution."
"The best part of the solution is that you can actually scale up to a large number of operating systems without additional hardware."
"VMware Software Defined Storage gives higher availability against data corruption."
"The most valuable features of the solution are that it is easy to deploy and the support is really good."
"The single management panel is the main feature that is wonderful for the customer."
 

Cons

"It's on the expensive side, as expected for a niche product."
"Compared to, for example, Hitachi NAS, the solution is not mature at all. It's just in its infancy as far as technology goes."
"They need better integration with public clouds along with a better hybrid solution."
"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."
"The technical support needs to improve. When we open a case, it is auto assigned to a support tech person. Nine out of ten times, we get an email right back saying that person is off until tomorrow. I cannot handle that. They just did this over the weekend to us, too. I had to call our rep and have them do something about it."
"I would also like to see better support for CIFS workloads."
"There is some room for new features related to authentication and integration with Kubernetes, and other solution using S3 Bucket."
"In terms of scalability, it doesn't expand out quite as robustly as some of the others, but it covers 90% of the market in what it does."
"The solution's pricing could be better."
"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."
"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."
"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."
"Integration with other vendors is not available."
"I wish there were some graphical user interface to access the GPFS file system creation and monitoring."
"The biggest problem is that it is not able to provide block storage."
"Simplifying the licensing model and making it cheaper would improve the solution."
"The performance is not as good as some competing products and reporting can be improved."
"I'd like to see improved hardware compatibility"
"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."
"There is room for more integrations and plugins into more storages."
"VMware Software Defined Storage should include a shared database on a standard version."
"It doesn't have the ability to be deployed on any kind of hardware and network connectors."
 

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."
"We used a reseller for the purchase."
"The price of this solution could be made more affordable."
"The price could be cheaper."
"Our licensing is renewed annually."
"The pricing for FlashBlade is between cheap and moderate."
"The product is very expensive."
"The price is a little high."
"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 product is quite expensive and is among the most expensive for this type of solution."
"The solution is very expensive."
"VMware Software Defined Storage is a slightly expensive solution."
"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."
"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."
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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%
Government
7%
Computer Software 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 Business2
Midsize Enterprise1
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: December 2025.
881,082 professionals have used our research since 2012.