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.

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: December 2025).

Buyer's Guide

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

"We have integrated it with VMware. The integration process is pretty good. Especially with VMware, it helps with the capacity of it."

"The initial setup is pretty quick."

"The tool's most valuable features are data warehousing, speedy recovery, and analytics. Its latest release is cost-effective."

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

"The product is scalable and easy to expand."

"The snapshots, replication, and the ability to have immutable blades are the most valuable features. You're putting data snapshots out in those blades, and they cannot be touched. Its performance is great."

"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."

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

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."

"I would rate Nutanix Unified Storage a ten out of ten."

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

"Nutanix Unified Storage is very stable."

"The availability of the environment is incredible, and with Prism Central, you're able to diagnose and go over issues quickly."

"Currently, the most valuable aspect of our Nutanix implementation is its file storage functionality."

"It gives more security that the data isn't going to get lost."

"The best Nutanix Unified Storage features are its recovery and data speeds. It has resolved the issue of accessing information quickly."

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

More Nutanix Unified Storage (NUS) pros

Cons

"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."

"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."

"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 features provided for SMB customers are limited."

"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."

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

"I would like to see better integration."

More Pure Storage FlashBlade cons

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

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

"While they are good and they do work, some of the snapshotting and tiering features are not as simple to set up as they could be."

"I think Nutanix Unified Storage (NUS) can be improved with integration with vendors other than VMware or Dell, seeking more integrations with other storage vendors."

"The escalation process with technical support could do with some improvement."

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

"The solution needs to be more open to integration with other vendors. Sometimes, we struggle with the support process. Our skilled engineers must explain our problems to everyone, even though we've already done preliminary investigations. The support team follows standard procedures, which can be painful. We're not a small customer, especially in the life sciences sector, so we'd appreciate more specialized support. I've heard Nutanix Unified Storage has teams dedicated to life sciences and healthcare; we should be part of that."

"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."

"I believe that one of the most complicated parts of Nutanix Unified Storage is the configuration of the DNS issue in Active Directory. Sometimes it is a bit complicated to troubleshoot or detect an error when integrating it with Active Directory."

More Nutanix Unified Storage (NUS) 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."

"The price could be cheaper."

"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."

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

"Licensing fees are paid yearly."

"The price of this solution could be made more affordable."

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

"The price is a little high."

More Pure Storage FlashBlade pricing and cost advice

Information not available

"If we compare the cost of Nutanix Objects Storage to other solutions such as VMware licenses, our current choice is Nutanix Objects Storage. This solution is more cost-effective. However, adding VMware to Nutanix would not be a cost-efficient decision, which is why we do not use it anymore."

"In the manufacturing industry, we operate under very lean principles where costs are heavily scrutinized. There was some initial hesitation, but the performance we've experienced since switching to the Nutanix platform, along with the peace of mind from having confidence in our platform to not give us issues that keep us up at night, has smoothed over much of that scrutiny."

"Nutanix is very competitive."

"It's not the cheapest solution. It's in line with other solutions, but it offers features that the competitors don't have at any price point, especially with regard to analytics and ransomware prevention. No one else has any sort of object-based storage available. Nutanix Unified Storage is a lot more feature-rich. This is a situation where you get what you pay for."

"The licensing currently works based on a software license. If we have files, volumes, and other licenses combined, that would be more valuable. I don't want to go for a separate license for files and a separate license for volumes. We have unified storage, so the licensing should also be unified. That would be helpful."

"The solution is highly-priced."

"I assume Nutanix Unified Storage (NUS) has helped reduce our total cost of ownership."

"Its pricing is good to okay. It is not super inexpensive, but it is still competitive. Everything could always be lower."

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...

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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...

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...

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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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