IBM Storage Fusion vs Nutanix Unified Storage (NUS) comparison

IBM and Nutanix are both solutions in the File and Object Storage category. IBM is ranked #28, while Nutanix is ranked #3 with an average rating of 8.7. IBM holds a 1.0% mindshare in FaOS, compared to Nutanix’s 2.6% mindshare. Additionally, 98% of Nutanix users are willing to recommend the solution.

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Executive Summary

We performed a comparison between IBM Storage Fusion and Nutanix Unified Storage (NUS) based on real PeerSpot user reviews.

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File and Object Storage

December 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

Mindshare comparison

As of January 2026, in the File and Object Storage category, the mindshare of Pure Storage FlashBlade is 5.3%, down from 6.0% compared to the previous year. The mindshare of IBM Storage Fusion is 1.0%, up from 0.3% compared to the previous year. The mindshare of Nutanix Unified Storage (NUS) is 2.6%, down from 2.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.

File and Object Storage Market Share Distribution
Product	Market Share (%)
Nutanix Unified Storage (NUS)	2.6%
Pure Storage FlashBlade	5.3%
IBM Storage Fusion	1.0%
Other	91.1%

File and Object Storage

Featured Reviews

MikaelHellström

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.

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Branko Cirovic

Storage Engineer at Comtrade Group

Enables seamless file distribution while benefiting from scalability but could use simplified implementation

IBM Storage Fusion is used in telecoms. It is a file center that receives and shares files. It is also used for writing the CDR zone on the storage, since it offers a cost-effective solution for large-scale storage needs in a telecom setup The deployment of Storage Fusion has been new for us in…

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Amarnath Charugundla

System Engineer at Tata Consultancy

Unified management and cost-effectiveness lead to positive experiences and future savings

Improvement is necessary wherein the memory or storage should not breach 90%, because if breached, it becomes unmanageable. We have to set alerts or CPU triggering for 95% for the first warning. Other activities on nodes or file systems should be properly maintained. We must monitor the dashboard for P1, P2 alerts in the Nutanix Unified Storage (NUS) file share system including SMB, NFS, objects, and blocks. Attention should be maintained for any alerts such as CPU, memory, and RAM alerts, as exceeding these creates issues within teams. If triggered to 95% and forgotten, it crosses the SLA breach, causing disturbances to application, web, and platform teams. Continuous monitoring on the Nutanix dashboard is essential. Even a highly experienced person in Nutanix Unified Storage (NUS) cannot provide a 10 rating out of 10 because it is a vast system. I would rate it eight from my perspective.

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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

"Among its most appealing features are its ease of handling and minimal maintenance requirements."

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

"The most valuable feature is Safe Mode."

"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."

"The most valuable features of FlashBlade include its replication capabilities, reports, and easy allocation. Everything is user-friendly."

"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 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."

"We have seen a reduction in the total cost of ownership by around 20%."

More Pure Storage FlashBlade pros

"Fusion provides the ability to install the secret server and distribute files; it serves as a black box where tickets are opened only if issues arise, reducing frequent upgrade problems."

"For customer service and technical support, I would rate them a nine out of ten."

"The pricing, setup costs, and licensing of Nutanix Unified Storage (NUS) are amazing, in my view."

"We migrated over to Nutanix and saw an immediate improvement in the performance."

"The reliability and stability of Nutanix Unified Storage (NUS) is good, and the disaster recovery component is something impressive for this product."

"The benefit for our customers is cost effectiveness. The customer is spending substantial money refreshing NetApp storage. We identified a use case from a NAS point of view. Using Nutanix Unified Storage (NUS) helps in reducing costs, as they are not spending a dedicated cost for storage procurement."

"We appreciate how Nutanix Unified Storage (NUS) performs very well. We appreciate being able to have the duplication of the data to a secondary location."

"My opinion is that this solution has very good stability."

"The best features of Nutanix Unified Storage (NUS) are its excellent performance; comparing it with other vendors, there's no need for expertise as with other storage solutions."

More Nutanix Unified Storage (NUS) pros

Cons

"I would like to have Snapshots and Snapmail in the next release. People who came from a NetApp background, especially expect these features."

"The Pure Storage Orchestrator is our biggest pain point at the moment. If we can have more say in future developments of feature sets that we will need to support for our use case, that would be pretty beneficial to us."

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

"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."

"I would like to see better integration."

"It would be nice if you could store file-based in the same box with the same technology."

"I would like to see the licensing fees improved as well as the price per terabytes."

"It usually comes down to just what you hit and the value you're getting when you spend the money and license the products. I would always go, "If you want to make things better, lower your price and make your licensing simpler." There's always an opportunity around that."

More Pure Storage FlashBlade cons

"The implementation is complex, especially when using custom servers."

"The CVM consumes more memory and CPU, as it will be allocated a minimum of 32 GB. For a large data store, they are unnecessarily consuming extra resources through the built-in CVM."

"The problem is that we need to invest a lot of money to get AI, and therefore, we are not going to purchase AI right now."

"We have issues with software updates occasionally."

"Security is an area for improvement. When there are vulnerabilities, there needs to be a faster approval process. The solution needs to automatically target the vulnerabilities and not waste too much time."

"Perhaps Unified Storage could be improved by including artificial intelligence to make searches more effective. Also, if someone has access who shouldn't, it could automatically update, so I do not need to physically remove permission. The platform could do it automatically. AI could make it more self-service."

"I have heard that there have been latency problems."

"The interface is not logical. It should be a little simpler."

"When it comes to Nutanix Files, one thing that would be great is a slightly easier way of managing snapshots and restore points, especially when a third party is involved."

More Nutanix Unified Storage (NUS) cons

Pricing and Cost Advice

"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."

"Our customers have seen a reduction in TCO."

"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."

"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."

"The product is very expensive."

"Licensing fees are paid yearly."

"The price is a little high."

More Pure Storage FlashBlade pricing and cost advice

Information not available

"The price can always be improved. As a customer, you always seek reasonable solutions within your budget, and they give us little to do a lot. My IT team always has to justify that we are choosing an optimal solution, so the price could be a little lower Maybe the prices could be a little bit lower."

"In my opinion, the product is fairly priced."

"I find Nutanix Files Storage competitively priced, even its feature set. Its price is seven out of ten."

"The price of the license is expensive when comparing it to traditional storage."

"Nutanix is priced a bit higher than some of its competitors. A lot of Chinese companies like Huawei are entering the Saudi Arabian market trying to provide similar solutions for a lower price. It offers a good value, especially the support. Nutanix has a highly competent team. The after-sales support is excellent."

"It's definitely a lot cheaper than buying a new EMC array. We bought a five-year commitment on all the hardware and software. I don't know what the cost was back then, but I do remember it was cheaper."

"For clients running Nutanix, the licensing cost for Files is a small add-on cost."

"Nutanix Unified Storage isn't expensive."

More Nutanix Unified Storage (NUS) pricing and cost advice

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Top Industries

By visitors reading reviews

Financial Services Firm

12%

Manufacturing Company

10%

Computer Software Company

10%

Government

Outsourcing Company

14%

Computer Software Company

14%

Manufacturing Company

13%

University

Computer Software Company

21%

Manufacturing Company

12%

Educational Organization

Financial Services Firm

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	11
Midsize Enterprise	11
Large Enterprise	21

No data available

By reviewers
Company Size	Count
Small Business	26
Midsize Enterprise	30
Large Enterprise	64

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...

See all answers

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...

See all answers

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...

See all answers

What is your experience regarding pricing and costs for IBM Storage Fusion?

Compared to other options, purchasing IBM Storage Fusion, along with necessary hardware and maintenance, comes with a...

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What needs improvement with IBM Storage Fusion?

The implementation is complex, especially when using custom servers. Simplification or better support for this aspect...

See all answers

What is your primary use case for IBM Storage Fusion?

IBM Storage Fusion is used in telecoms. It is a file center that receives and shares files. It is also used for writi...

See all answers

What do you like most about Nutanix Unified Storage?

Nutanix has excellent product documentation available on their portals, written in simple, easy-to-understand language.

See all answers

What is your experience regarding pricing and costs for Nutanix Unified Storage?

It is very cost-effective compared to the traditional environment. With new hardware, it's a long-term investment but...

See all answers

What needs improvement with Nutanix Unified Storage?

To improve Nutanix Unified Storage (NUS), cost is always an issue for every company, especially when we talk about la...

See all answers

Comparisons

Dell PowerScale (Isilon) vs Pure Storage FlashBlade

Compared 18% of the time

MinIO vs Pure Storage FlashBlade

Compared 9% of the time

Pure Storage FlashArray vs Pure Storage FlashBlade

Compared 9% of the time

VAST Data vs Pure Storage FlashBlade

Compared 7% of the time

NetApp AFF vs Pure Storage FlashBlade

Compared 2% of the time

More Pure Storage FlashBlade Competitors

Dell PowerScale (Isilon) vs IBM Storage Fusion

Compared 28% of the time

Dell ObjectScale vs IBM Storage Fusion

Compared 26% of the time

Pure Storage Evergreen One vs IBM Storage Fusion

Compared 12% of the time

HPE GreenLake for File Storage vs IBM Storage Fusion

Compared 9% of the time

More IBM Storage Fusion Competitors

Red Hat Ceph Storage vs Nutanix Unified Storage (NUS)

Compared 8% of the time

Microsoft Storage Spaces Direct vs Nutanix Unified Storage (NUS)

Compared 8% of the time

Dell PowerScale (Isilon) vs Nutanix Unified Storage (NUS)

Compared 8% of the time

Amazon S3 vs Nutanix Unified Storage (NUS)

Compared 5% of the time

HPE Alletra Storage vs Nutanix Unified Storage (NUS)

Compared 3% of the time

More Nutanix Unified Storage (NUS) Competitors

Product Reports

Buyer's Guide

Pure Storage FlashBlade

January 2026

Download Pure Storage FlashBlade product report

Buyer's Guide

File and Object Storage

December 2025

Download IBM Storage Fusion product report

Buyer's Guide

Nutanix Unified Storage (NUS)

January 2026

Download Nutanix Unified Storage (NUS) product report

Also Known As

No data available

Nutanix Files Storage, Nutanix Volumes Block Storage, Nutanix Objects Storage

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 Storage Fusion is a powerful platform used for data management, monitoring, and performance optimization. Users leverage its intuitive interface for capacity planning, storage provisioning, and troubleshooting.

The product's scalability allows for easy expansion, while its reliability ensures data protection. With predictive analytics and automation features, users can enhance efficiency and prevent downtime.

IBM

Nutanix Unified Storage offers seamless scalability and high availability with a user-friendly interface, supporting multi-protocol operations while integrating effortlessly with cloud platforms. It enhances performance and security with features like ransomware protection and advanced data management.

Nutanix Unified Storage streamlines storage management by consolidating infrastructure and optimizing virtualization. It reduces operational complexity and enhances performance across diverse workloads. Despite feedback on integration challenges and suggestions for improving pricing, API capabilities, and security, it remains a key choice for dependable storage solutions. Calls for streamlined implementation and enhanced AI capabilities reflect its potential to better support evolving organizational strategies, driving cost efficiency and data accessibility.

What are the key features of Nutanix Unified Storage?

Intuitive Interface: Simplifies management with easy navigation.
High Availability: Ensures minimal downtime and reliable performance.
Seamless Scalability: Adapts to increasing data requirements effortlessly.
Multi-Protocol Support: Facilitates comprehensive operations across different systems.
Advanced Security: Offers ransomware protection and secure data backup.
Cloud Integration: Allows smooth interaction with cloud platforms.

What benefits and ROI should users evaluate?

Operational Efficiency: Reduced complexity through streamlined management.
Cost Optimization: Achieved via data compression and consolidation.
Enhanced Data Visibility: Improved insights with advanced data lens.
Performance Improvement: Significant uplift in workload handling and database performance.
Scalable Infrastructure: Enables growth and adaptation to changing demands.

In industries, Nutanix Unified Storage is deployed to centralize storage needs, improve database efficiency, and enhance file sharing and security. Organizations use it to consolidate infrastructure, support virtualization, optimize costs, and facilitate virtual machine hosting. It's instrumental in scalable object storage, ransomware protection, integrating legacy systems, and catering to critical applications.

Nutanix

Sample Customers

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

1. Accenture 2. Aetna 3. AIG 4. Airbus 5. Allstate 6. Amazon 7. American Express 8. ATT 9. Bank of America 10. Barclays 11. BASF 12. Bayer 13. Bechtel 14. Boeing 15. BNP Paribas 16. Cisco 17. Coca-Cola 18. Comcast 19. Dell 20. Deutsche Bank 21. Eni 22. ExxonMobil 23. Ford 24. GE 25. Google 26. Hitachi 27. Honeywell 28. IBM 29. Intel 30. JPMorgan Chase 31. Kellogg's 32. Lockheed Martin

JetBlue, International Speedway Corporation, Volkswagen SAIC, Brighton and Hove City Council, Foresters Financial, Janus International Group, Cloud Comrade, Serco

Buyer's Guide

File and Object Storage

December 2025

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