Dell PowerScale (Isilon) vs IBM Storage Fusion comparison

Dell Technologies and IBM are both solutions in the File and Object Storage category. Dell Technologies is ranked #3 with an average rating of 8.8, while IBM is ranked #27. Dell Technologies holds a 8.6% mindshare in FaOS, compared to IBM’s 0.8% mindshare. Additionally, 96% of Dell Technologies users are willing to recommend the solution.

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Executive Summary

We performed a comparison between Dell PowerScale (Isilon) and IBM Storage Fusion 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: October 2025).

Buyer's Guide

File and Object Storage

October 2025

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Helped 872,778 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 Dell PowerScale (Isilon) is 8.6%, up from 8.1% compared to the previous year. The mindshare of IBM Storage Fusion is 0.8%, up from 0.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.

File and Object Storage Market Share Distribution
Product	Market Share (%)
Dell PowerScale (Isilon)	8.6%
Pure Storage FlashBlade	5.7%
IBM Storage Fusion	0.8%
Other	84.9%

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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Scott Taylor

Senior Infrastructure Specialist at a healthcare company with 10,001+ employees

Manages large data sets efficiently with hybrid cloud integration

My organization is quite large, with about 30,000 employees. The growth has been substantial in areas such as radiology and genomics. One of the best features we've utilized recently is offload to cloud pools due to capacity constraints on-premise. We didn't want to expand Dell PowerScale (Isilon) straight away, so we utilized cloud pools to offload some data to Azure. That's really saved us in certain areas as we didn't have funding to expand Dell PowerScale (Isilon) until next year, which is why we utilized the cloud pools functionality to offload.

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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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Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

Pros

"The initial setup is pretty quick."

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

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

"It's very easy-to-use."

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

"The most valuable feature of this solution is performance."

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

"It uses the same platform for connectivity so integration is seamless."

More Pure Storage FlashBlade pros

"Dell PowerScale (Isilon) definitely deserves ten out of ten for scalability."

"For maximizing storage utilization, PowerScale is great. When you write the data to it, it spreads it out to all the nodes, so you get all the performance from the entire pool."

"Isilon is flexible in supporting various data workloads while keeping them protected. Dell continues to release updates and patches which enhance the use of this solution. This includes offering ransomware protection."

"Customer service is absolutely satisfying, rating at least nine out of ten, as they have managed previous issues well."

"You plug in a new node and data starts migrating over to it, and IT spreads out the load. We've added multiple nodes to the system since deploying it. The process is pretty seamless, and we are able to do it with no downtime. It's a very easy process to do."

"PowerScale has made it extremely easy to scale file data across our organization. We have two implementations of Isilon. One is a replica of the other. When scaling, we add nodes to each location and expand the cluster. The process is straightforward."

"The fact that we were able to set it up, use it, and, for the most part, didn't have to worry about it after we had it set up has been valuable."

"My experience when deploying Dell PowerScale (Isilon) was very straightforward, as we had Dell come on site to do all the actual setup, which was a big help."

More Dell PowerScale (Isilon) 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."

Cons

"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."

"In my opinion, one way Pure Storage FlashBlade can be improved is by having more compatibility between the FlashArray and FlashBlade, allowing for synchronized data between both platforms."

"I would like to see more VM-Aware features in the next release of this solution."

"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."

"I would like to see better integration."

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

"The speed could be improved."

"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."

More Pure Storage FlashBlade cons

"We used to have a chat feature available on the support site. It's not available to us anymore."

"If they integrated some functions, as they have on Data Domain with a cyber recovery vault, it would be ideal."

"The UID mapping and how to configure mapping-related things is a struggle."

"The support offered by the product is an area of concern where improvements are required."

"Dell PowerScale (Isilon) could improve the load distribution capability. For example, in some cases, the system load is not distributed automatically on all the nodes but is concentrated only on one. You have a peak request on only one node and the others don't do anything."

"They could improve implementation, as we had to rack and stack it ourselves."

"Dell PowerScale can improve on its multi-tenant part because as a service provider, we have bigger clusters in data centers where we can serve multiple customers and grant them dedicated management points and automation features that can be managed in a multi-tenant environment."

"Dell PowerScale (Isilon) is a little bit pricey, and its pricing could be improved."

More Dell PowerScale (Isilon) cons

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

Pricing and Cost Advice

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

"Licensing fees are paid yearly."

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

"The product is very expensive."

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

"It's a costly solution, but Pure Storage FlashBlade doesn't require additional licenses. All of the software is combined into one bundle."

"The price could be cheaper."

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

More Pure Storage FlashBlade pricing and cost advice

"Dealing with the product costs and licensing areas is getting easier since Dell is simplifying the licensing process and licensing packages offered to users."

"The pricing is excellent."

"I always want things to be less expensive. However, I would say the pricing is fair. Their costs are in alignment with their competitors. It is a good value for the money."

"The solution's licensing cost varies based on capacity and performance requirements."

"Dell PowerScale (Isilon) is an expensive solution."

"The solution is expensive; it is not the cheapest solution out there. If you look at it from a total cost of ownership perspective, then it is a very compelling solution. However, if you're looking at just dollar per terabyte and not looking at the big picture, then you could be distracted by the price. It is not an amazing price, but it's pretty good. It is also very good when you consider the total cost of ownership and ease of management."

"Our company finds the pricing high, but it decreases over time."

"The price of the solution is high."

More Dell PowerScale (Isilon) pricing and cost advice

Information not available

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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

13%

Manufacturing Company

11%

Financial Services Firm

Government

Computer Software Company

15%

Manufacturing Company

14%

Outsourcing Company

11%

University

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

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

By reviewers
Company Size	Count
Small Business	16
Midsize Enterprise	17
Large Enterprise	36

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...

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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 do you like most about Dell EMC PowerScale (Isilon)?

The solution provides massive performance, scalability, efficiency, and ease of management.

See all answers

What is your experience regarding pricing and costs for Dell EMC PowerScale (Isilon)?

The cost is competitive with other vendors such as HP. I always compare prices between two vendors, and they are good...

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What needs improvement with Dell EMC PowerScale (Isilon)?

Sometimes, it takes too long to set up everything. That's something I would want them to improve. The main challenge ...

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

Comparisons

Pure Storage FlashArray vs Pure Storage FlashBlade

Compared 10% 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

VAST Data vs Pure Storage FlashBlade

Compared 7% of the time

Dell ObjectScale vs Pure Storage FlashBlade

Compared 5% of the time

More Pure Storage FlashBlade Competitors

NetApp FAS Series vs Dell PowerScale (Isilon)

Compared 16% of the time

Qumulo vs Dell PowerScale (Isilon)

Compared 8% of the time

Dell ObjectScale vs Dell PowerScale (Isilon)

Compared 8% of the time

HPE StoreEasy vs Dell PowerScale (Isilon)

Compared 6% of the time

VAST Data vs Dell PowerScale (Isilon)

Compared 5% of the time

More Dell PowerScale (Isilon) Competitors

Nutanix Unified Storage (NUS) vs IBM Storage Fusion

Compared 31% of the time

Dell ObjectScale vs IBM Storage Fusion

Compared 27% of the time

Pure Storage Evergreen One vs IBM Storage Fusion

Compared 11% of the time

More IBM Storage Fusion Competitors

Product Reports

Buyer's Guide

Pure Storage FlashBlade

October 2025

Download Pure Storage FlashBlade product report

Buyer's Guide

Dell PowerScale (Isilon)

October 2025

Download Dell PowerScale (Isilon) product report

Buyer's Guide

File and Object Storage

October 2025

Download IBM Storage Fusion product report

Also Known As

No data available

PowerScale, Dell EMC Isilon

No data available

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

Dell PowerScale leads in unstructured data management with unified file and object storage, massive scalability, security, and cloud adaptability, enhancing AI, analytics, and enterprise applications with exceptional performance and resilience.

Dell PowerScale Isilon provides a comprehensive platform for unstructured data, excelling in scalability, management, and performance. With features like single-pane management, SyncIQ, and SmartQuotas, it handles large datasets with flexibility and robust security. Its multi-protocol support and seamless expansion improve operational efficiency. While it offers strong data protection, enhancements in cloud integration, cybersecurity, and performance are sought. Users note potential for cost reductions and streamlined configurations and mention desired improvements in object storage handling and NFS support.

What are the key features of Dell PowerScale Isilon?

Single-pane management: Simplifies data control and monitoring through a unified interface.
SyncIQ: Ensures efficient data replication for business continuity.
SmartQuotas: Provides intelligent quota management for optimized storage allocation.
Multi-protocol support: Facilitates cross-platform data access and integration.
Seamless storage expansion: Allows effortless scaling to accommodate growing data needs.

What benefits should users consider when reviewing Dell PowerScale Isilon?

Operational efficiency: Reduces workload with easy management and automation.
Enhanced security: Offers comprehensive data protection and recovery options.
Scalability: Supports large-scale data storage with flexible growth capabilities.
Performance: Delivers high-speed data processing for demanding applications.
Integration flexibility: Adapts to on-prem and hybrid cloud environments for diverse deployment needs.

Organizations across industries utilize Dell PowerScale Isilon for large-scale unstructured storage, supporting applications like video archiving, genomic data storage, and high-resolution imaging. Educational institutions, research centers, and media enterprises rely on its scaled-out storage capabilities, providing centralized, secure storage for diverse applications in hybrid, cloud, and on-prem environments.

Dell Technologies

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

Sample Customers

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

OMRF, University of Utah, Translational Genetics Research Institute, Arcis, Geofizyka Torumn, Cyprus E&P Corporation, Colburn School, Columbia Sportswear, Harvard Medical School, University of Michigan, National Library of France,

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

Buyer's Guide

File and Object Storage

October 2025

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