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 #27, while Nutanix is ranked #2 with an average rating of 8.7. IBM holds a 0.8% mindshare in FaOS, compared to Nutanix’s 3.0% 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, Nutanix, Dell Technologies and others in File and Object Storage.

To learn more, read our detailed File and Object Storage Report (Updated: September 2025).

Buyer's Guide

File and Object Storage

September 2025

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Helped 868,759 peers since 2012

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 October 2025, in the File and Object Storage category, the mindshare of Pure Storage FlashBlade is 5.7%, down from 6.2% compared to the previous year. The mindshare of IBM Storage Fusion is 0.8%, up from 0.2% compared to the previous year. The mindshare of Nutanix Unified Storage (NUS) is 3.0%, up from 2.5% 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)	3.0%
Pure Storage FlashBlade	5.7%
IBM Storage Fusion	0.8%
Other	90.5%

File and Object Storage

Featured Reviews

Parul-Patel

Senior Network Engineer at Holy Redeemer Health System, Inc.

High performance and throughput enhance IT backup management

The multi-dimensional scale-out design feature of Pure Storage FlashBlade is not in use in our environment. Regarding data reduction technologies, we don't get much deduplication because the data is already deduplicated from our FlashArray before we get to backup, so there is no benefit of deduplication. Regarding the integration with cloud-native ecosystem tools, we are not on cloud; we are strictly an on-premises solution. Pure Storage FlashBlade is not used by any end-user; it's used only for IT backup, with only about four people in our group managing it. I cannot recommend Pure Storage FlashBlade to other users depending upon their financial situation because it's an expensive solution, and the cost is very high, including licensing and renewal every year. I rate Pure Storage FlashBlade an eight out of ten.

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

"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."

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

"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."

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

"The most valuable feature is Safe Mode."

"The most valuable features of this solution are the rewrite speed and the nonstop services."

"I would rate this solution an eight plus. It has has good flexibility and stability, it's easy to manage and the response time is good."

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."

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

"Redundancy and availability are valuable. We have several nodes, so it stays up, and there is redundancy. Then there is availability."

"The customer service executives of all Nutanix products are active and responsive."

"My experience with using Nutanix Unified Storage (NUS) for data-intensive workloads is that we have many SQL Servers and they perform much better than they did when we used hybrid converged previously."

"I rate the overall solution ten out of ten."

"What I like most about Nutanix Files Storage is the way it makes copies of the data. The solution also has high availability, which is excellent. Another valuable feature of Nutanix Files Storage is self-service, so users won't have to depend on the IT team much."

"Nutanix Objects is reliable."

"What I appreciate most about Nutanix Unified Storage (NUS) is how easy it is to use and how simple it is to create new volumes and containers, and it's pretty quick."

More Nutanix Unified Storage (NUS) pros

Cons

"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."

"Recently, while upgrading the version code, one of the controllers failed. Replacing the controller took between 14 to 20 days."

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

"I would like to see better integration."

"There could be improvements in public cloud integration."

"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."

"To improve FlashBlade, some analysts suggest enhancing its handling of relational database management systems and SQL queries."

"I would also like to see better support for CIFS workloads."

More Pure Storage FlashBlade cons

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

"The pricing can be quite high."

"For future updates, I think Nutanix Unified Storage (NUS) should look at features similar to what ONTAP of NetApp is doing, such as tiering to the public cloud."

"Since it's part of Prism, I might suggest integrating the management console into Prism instead of having a separate console; that's the only change I would recommend, and it's not a significant issue."

"The product does not offer one console."

"It could be more user-friendly."

"While the stability of Nutanix Unified Storage (NUS) is good, the need for manual intervention can be a drawback."

"The management is pretty clunky, in my opinion. It could be a little bit better."

"It would be beneficial if there were a migration tool for the new way of syncing data for data protection. Currently, we have 30 days' worth of snapshots going back and forth for data protection. A migration tool to transition to better syncing for DR would be valuable, as otherwise, we lose 30 days because of the storage requirement."

More Nutanix Unified Storage (NUS) cons

Pricing and Cost Advice

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

"The price could be cheaper."

"Licensing fees are paid yearly."

"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."

"I have seen ROI. It has allowed me to increase the density of my VMs without having to purchase anything additional."

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

More Pure Storage FlashBlade pricing and cost advice

Information not available

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

"The product has an annual licensing fee."

"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."

"We are Nutanix partners, so it is pretty good. With the free terabyte that comes with the Nutanix clusters, we have started to build proposals for the clients. The price adjustment with the new policy of Nutanix Unified Storages seems attractive. Let us see if it has results."

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

"The solution’s pricing could be cheaper."

"It is quite expensive otherwise as it comes with three-tier peer underlying hardware."

"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."

More Nutanix Unified Storage (NUS) pricing and cost advice

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Top Industries

By visitors reading reviews

Computer Software Company

12%

Financial Services Firm

11%

Manufacturing Company

10%

Government

Computer Software Company

16%

Manufacturing Company

14%

Outsourcing Company

12%

Financial Services Firm

Computer Software Company

29%

Manufacturing Company

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	20

No data available

By reviewers
Company Size	Count
Small Business	27
Midsize Enterprise	30
Large Enterprise	63

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?

The pricing of Pure Storage FlashBlade is expensive compared to other products I used from other companies in the pas...

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What needs improvement with Pure Storage FlashBlade?

I believe there is not much improvement needed because they have everything we need, but the interface is a little bi...

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?

The cybersecurity features are used for protecting unstructured data against threats such as ransomware.

See all answers

Comparisons

Dell PowerScale (Isilon) vs Pure Storage FlashBlade

Compared 20% of the time

Pure Storage FlashArray vs Pure Storage FlashBlade

Compared 11% of the time

MinIO vs Pure Storage FlashBlade

Compared 10% of the time

Red Hat Ceph Storage vs Pure Storage FlashBlade

Compared 9% of the time

Dell PowerStore vs Pure Storage FlashBlade

Compared 2% of the time

More Pure Storage FlashBlade Competitors

Dell PowerScale (Isilon) vs IBM Storage Fusion

Compared 35% of the time

Dell ObjectScale vs IBM Storage Fusion

Compared 30% of the time

More IBM Storage Fusion Competitors

Red Hat Ceph Storage vs Nutanix Unified Storage (NUS)

Compared 14% of the time

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

Compared 11% of the time

Microsoft Storage Spaces Direct vs Nutanix Unified Storage (NUS)

Compared 10% of the time

MinIO vs Nutanix Unified Storage (NUS)

Compared 8% of the time

Qumulo vs Nutanix Unified Storage (NUS)

Compared 4% of the time

More Nutanix Unified Storage (NUS) Competitors

Product Reports

Buyer's Guide

Pure Storage FlashBlade

September 2025

Download Pure Storage FlashBlade product report

Buyer's Guide

File and Object Storage

September 2025

Download IBM Storage Fusion product report

Buyer's Guide

Nutanix Unified Storage (NUS)

September 2025

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 provides high availability and seamless cloud platform integration, ensuring robust redundancy, scalability, and streamlined management. It supports hybrid cloud connectivity, enhancing storage security and performance.

Nutanix Unified Storage is designed for effective data protection across block, file, and object storage, offering features like ransomware detection and a centralized management interface through Prism Central. Users gain improved SLAs and IT cost savings through its efficient performance. Despite its user-friendly interface, there is a demand for enhanced security measures such as Multi-Factor Authentication and DLP. While its resilience is notable, users seek improvements in protocol compatibility, storage capabilities, pricing, and support processes.

What are the most important features of Nutanix Unified Storage?

User-Friendly Interface: Simplifies storage management and monitoring.
High Availability: Ensures continuous operation and reliability.
Seamless Cloud Integration: Compatible with platforms like Azure and AWS.
Robust Redundancy: Protects data against hardware failures.
Scalable Architecture: Easily adapts to growing data storage needs.
Ransomware Detection: Enhances data protection measures.

What benefits and ROI might users find in reviews?

Improved SLAs: Increased service reliability and performance.
IT Cost Savings: Reduces expenses through efficient resource use.
Enhanced Security: Stronger data protection and reduced risk.
Centralized Management: Easier control and monitoring from one dashboard.

Industries implement Nutanix Unified Storage for tasks such as file storage, database performance improvement, and storage solution consolidation. Companies deploying virtual machines, securing against ransomware, connecting hybrid clouds, and backing up data find it useful. It supports workloads like Citrix VDI, Kubernetes, and research data, assisting many organizations migrating from legacy storage for better cost efficiency and reduced data center footprints.

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

September 2025

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