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IBM Storage Fusion vs Nutanix Unified Storage (NUS) comparison

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Comparison Buyer's Guide

Executive Summary

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 File and Object Storage
8th
Average Rating
8.8
Reviews Sentiment
7.8
Number of Reviews
38
Ranking in other categories
All-Flash Storage (16th), Software Defined Storage (SDS) (8th)
IBM Storage Fusion
Ranking in File and Object Storage
28th
Average Rating
0.0
Reviews Sentiment
6.2
Number of Reviews
1
Ranking in other categories
No ranking in other categories
Nutanix Unified Storage (NUS)
Ranking in File and Object Storage
2nd
Average Rating
8.8
Reviews Sentiment
7.3
Number of Reviews
109
Ranking in other categories
All-Flash Storage (5th), Software Defined Storage (SDS) (3rd), Public Cloud Storage Services (5th), NVMe All-Flash Storage Arrays (4th)
 

Mindshare comparison

As of August 2025, in the File and Object Storage category, the mindshare of Pure Storage FlashBlade is 5.8%, down from 6.3% compared to the previous year. The mindshare of IBM Storage Fusion is 0.7%, up from 0.2% compared to the previous year. The mindshare of Nutanix Unified Storage (NUS) is 3.0%, up from 2.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
File and Object Storage
 

Featured Reviews

Eric Black - PeerSpot reviewer
The ability to leverage multi-tenancy along with immutability is a huge benefit for us
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. Veeam Backup specifically has started to streamline their API, and they are doing that with SOS API. They have optimized it. Any of the S3 devices out there that support this SOS API can have far more API calls at once. On our side, that translates to better restoration. With SOS API, it can leverage far more restorations at a single given time or read from the device in simple terms. That results in maximizing the output and throughput from the device itself.
Branko Cirovic - PeerSpot reviewer
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…
Amarnath Charugundla - PeerSpot reviewer
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.

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."
"The onboarding and integrated monitoring tools are pretty good."
"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."
"Approximately 40% to 50% of my time is saved using Pure Storage FlashBlade compared to different products."
"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."
"The solution is able to handle workloads and is easy to use. It allows us to actually manage the boxes in less time."
"The solution provides many controllers."
"Speed and ease of use are the two most valuable features."
"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."
"The pricing, setup costs, and licensing of Nutanix Unified Storage (NUS) are amazing, in my view."
"I strongly recommend Nutanix Unified Storage (NUS) to all users."
"The product's initial setup phase was simple."
"Management-wise, it has made work a lot easier. It is all in one place physically. It is much better now."
"It is unified. This is the best thing that Nutanix gave to the world. You can do everything from one point."
"Nutanix Unified Storage is easy to use. New employees are able to come up to speed fairly quickly with regard to the day-to-day administration processes."
"The life cycle managers of the PCMs are very impressive, and I like them. They make our lives easy when managing patches and security updates when they come in. A life cycle manager helps to consolidate different vendors."
"The most valuable feature of Nutanix Unified Storage is redundancy."
 

Cons

"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."
"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."
"I would like to see better integration."
"To improve FlashBlade, some analysts suggest enhancing its handling of relational database management systems and SQL queries."
"We haven't been able to use much of the cloud area of Pure Storage. We have a storage server and it would be better if it could integrate with other cloud features of this solution."
"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."
"It's on the expensive side, as expected for a niche product."
"Commvault has mainly driven the Analytics, providing data and reports. However, the product has room for improvement, especially regarding storage analytics. Upgrading firmware has caused issues, requiring feature disabling to revert to traditional backups. The firmware upgrades sometimes affect Commvault backups."
"The implementation is complex, especially when using custom servers."
"The graphical user interfaces could benefit from more attention to detail."
"I haven't had any issues with the solution so far."
"We would love to see the analytics and ransomware protection extended beyond just file servers to virtual machines, but they have a different product that covers that."
"Unified Storage failed to fulfill our object storage requirements."
"There are some techniques that need to be improved because sometimes, during processes, it gets stuck on the console, requiring command line interventions, indicating gaps between the GUI and command lines."
"Regarding areas where Nutanix Unified Storage (NUS) could improve, they should focus on pricing transparency and reducing licensing complexity."
"Nutanix Unified Storage (NUS) needs improvement, particularly for firmware upgrades, as sometimes updates take a whole day and it can be unclear whether the issue is with Nutanix Unified Storage (NUS) or the hardware, requiring us to reconfigure everything, which is a main point we want consolidated into one solution."
"I would not recommend Nutanix Unified Storage (NUS) to other users or developers because it does not support fiber channel (FC) or NVMe storage, and only supports iSCSI, which I believe is outdated technology in today's market."
 

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."
"The pricing is relatively expensive due to the FlashBlade technology. However, for companies needing quick and reliable data access, the cost is justified."
"The pricing for FlashBlade is between cheap and moderate."
"I feel that the price could always be lowered."
"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."
"The price could be cheaper."
"Our customers have seen a reduction in TCO."
Information not available
"The solution's pricing is better compared to other products."
"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."
"While the price may not be the most affordable, I believe it offers good value for the benefits it provides."
"I find Nutanix Files Storage competitively priced, even its feature set. Its price is seven out of ten."
"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 competitive and attractive for moving things to it and then prioritizing those newly freed up resources for something else."
"The solution's pricing is fair."
"The pricing of Nutanix is generally higher compared to other vendors, which is a common observation, but it provides value through its support and features offered to customers."
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Top Industries

By visitors reading reviews
Computer Software Company
13%
Financial Services Firm
12%
Manufacturing Company
10%
Government
8%
Computer Software Company
16%
Outsourcing Company
13%
Manufacturing Company
13%
Financial Services Firm
8%
Computer Software Company
31%
Manufacturing Company
7%
Educational Organization
6%
Financial Services Firm
5%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

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?
The pricing of Pure Storage FlashBlade is expensive compared to other products I used from other companies in the pas...
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...
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...
What needs improvement with IBM Storage Fusion?
The implementation is complex, especially when using custom servers. Simplification or better support for this aspect...
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...
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.
What is your experience regarding pricing and costs for Nutanix Unified Storage?
From my experience with issues, I have participated in P1 and P2 incidents and learned from them. I can provide solut...
What needs improvement with Nutanix Unified Storage?
While there are good aspects, I would like to see improvements in networking configuration, particularly regarding ov...
 

Also Known As

No data available
No data available
Nutanix Files Storage, Nutanix Volumes Block Storage, Nutanix Objects Storage
 

Overview

 

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
Find out what your peers are saying about Red Hat, Dell Technologies, Nutanix and others in File and Object Storage. Updated: June 2025.
864,053 professionals have used our research since 2012.