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 2.7% 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.

Find out what your peers are saying about Red Hat, Dell Technologies, Nutanix and others in File and Object Storage.

To learn more, read our detailed File and Object Storage Report (Updated: January 2026).

Buyer's Guide

File and Object Storage

January 2026

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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 February 2026, in the File and Object Storage category, the mindshare of Pure Storage FlashBlade is 5.5%, down from 5.9% 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 2.7%, 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)	2.7%
Pure Storage FlashBlade	5.5%
IBM Storage Fusion	1.0%
Other	90.8%

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

"The solution is able to handle workloads and is easy to use. It allows us to actually manage the boxes in less time."

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

"Pure Storage FlashBlade's scalability is one of the most valuable features, and importantly, it always works, allowing for seamless upgrades."

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

"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."

"FlashBlade offers low latency, high throughput, and seamless scalability."

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

"The solution provides many controllers."

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."

"What I found most valuable in Nutanix Files Storage is its high availability and ability to scale out with many VMs."

"The performance has been very good."

"What I appreciate most about Nutanix Unified Storage (NUS) is the efficiency in terms of storage capacity and reuse."

"The real-time alerts generated by this system enable us to swiftly address and mitigate such threats."

"On a scale of one to ten, I rate this solution a seven."

"I rate Nutanix Unified Storage (NUS) nine point five to ten, as it's easy to manage, scalable, has great performance, and includes advanced features."

"Nutanix Unified Storage is a simple, user-friendly, and stable solution."

"The reliability and availability are the most valuable features. Reliability is important because it can run my workloads. I need to be able to take advantage of the VMs that are executing on the storage. It has to be reliable. It's also important to have the storage available for scaling VMs on demand."

More Nutanix Unified Storage (NUS) pros

Cons

"Pure Storage FlashBlade should improve on more cloud integration."

"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."

"There could be improvements in public cloud integration."

"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."

"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."

"Its configuration should be easier."

"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."

"Compared to, for example, Hitachi NAS, the solution is not mature at all. It's just in its infancy as far as technology goes."

More Pure Storage FlashBlade cons

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

"The solution's monitoring and security features could be improved."

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

"Its licensing can be better. They can make it easier for us to scale our infrastructure."

"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."

"Nutanix Unified Storage (NUS) sits in a good place for us. The biggest improvement would be to make it more cost-effective from a storage node and storage perspective, so that the solution isn't such a question when it comes to cost-prohibitiveness versus potentially other vendors."

"When considering the difference in cost benefits, if you consider it only as a storage solution, you may find it expensive."

"It's still pretty expensive."

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

More Nutanix Unified Storage (NUS) cons

Pricing and Cost Advice

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

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

"The pricing is relatively expensive due to the FlashBlade technology. However, for companies needing quick and reliable data access, the cost is justified."

"I rate the tool's pricing a seven to eight out of ten."

"The price is a little high."

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

"Our customers have seen a reduction in TCO."

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

More Pure Storage FlashBlade pricing and cost advice

Information not available

"It is very good. It is much more competitive than a dedicated storage platform."

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

"The product has an annual licensing fee."

"Nutanix Unified Storage isn't expensive."

"It's competitive and attractive for moving things to it and then prioritizing those newly freed up resources for something else."

"The solution’s pricing could be cheaper."

"Nutanix Unified Storage was cheaper than other solutions we evaluated."

"Compared to other solutions, NUS is cost-effective and efficient. It also has good performance."

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

19%

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	66

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?

Regarding pricing, it is okay; we needed exactly this in size, and the price was a lot lower than competitors, making...

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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...

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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 8% of the time

VAST Data vs Pure Storage FlashBlade

Compared 8% of the time

Pure FlashArray X NVMe vs Pure Storage FlashBlade

Compared 2% of the time

More Pure Storage FlashBlade Competitors

Dell ObjectScale vs IBM Storage Fusion

Compared 27% of the time

Dell PowerScale (Isilon) 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

Microsoft Storage Spaces Direct vs Nutanix Unified Storage (NUS)

Compared 8% of the time

Red Hat Ceph Storage vs Nutanix Unified Storage (NUS)

Compared 7% of the time

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

Compared 6% of the time

Amazon S3 vs Nutanix Unified Storage (NUS)

Compared 5% of the time

Dell PowerStore 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

January 2026

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

January 2026

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