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Dell PowerScale (Isilon) vs Pure Storage FlashBlade comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Nov 4, 2024

Review summaries and opinions

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

ROI

Sentiment score
7.3
Dell PowerScale (Isilon) enhances cost efficiency, scalability, and resource allocation, offering notable ROI and reliability despite some higher costs.
Sentiment score
8.4
Pure Storage FlashBlade delivers cost savings, efficiency gains, and increased VM density, with returns seen within four years.
Despite being more expensive than Huawei, it is stable and most enterprises accept the price due to its stability.
In terms of Dell PowerScale (Isilon) specifically, we have seen a return on investment due to faster performance than our last few storage arrays, and the general usability is a lot better.
The second cluster of Dell PowerScale (Isilon) gives us flexibility for small things like code upgrades, all the way to scenarios where we have lost this data center or data, allowing us to check if data is still intact on the other side.
 

Customer Service

Sentiment score
8.3
Dell PowerScale receives mixed reviews on support, praised for escalation handling but criticized for initial delays and communication issues.
Sentiment score
8.2
Pure Storage FlashBlade's customer service is praised for expertise but sometimes experiences slower responses due to growth challenges.
Dell provides support within four hours, and they always fulfill their promises.
They have managed previous issues well.
I would evaluate the customer service and technical support for Dell PowerScale (Isilon) as great.
I would rate them an eight out of ten.
 

Scalability Issues

Sentiment score
8.0
Dell PowerScale offers scalable, flexible storage solutions, easily expanding to meet demands, though often needing technical support for setup.
Sentiment score
8.9
Pure Storage FlashBlade is praised for its scalability and ease of expansion, satisfying various industries like banking and media.
We started on PowerScale with around about 300 terabytes and are now two and a half petabytes, still on the same file system.
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.
Dell PowerScale is highly scalable, as evidenced by the reduced physical hardware and the efficient use of rack space.
 

Stability Issues

Sentiment score
8.4
Dell PowerScale is praised for exceptional stability, near-perfect uptime, easy management, and seamless integration into existing systems.
Sentiment score
8.8
Pure Storage FlashBlade is highly rated for stability, reliability, and performance, with minimal downtime and swift recovery.
I assess the stability and reliability of Dell PowerScale (Isilon) as perfect.
I find the product to be resilient and stable. There's no downtime and no crashes.
I find Dell PowerScale (Isilon) to be very stable and reliable.
In case there is any issue with any blade, the data is moved to another.
 

Room For Improvement

Dell PowerScale faces challenges in cost, cloud integration, complexity, and user demands for better pricing, support, and efficiency improvements.
Users want better cloud integration, support, pricing, efficiency, and improvements in analytics, configuration, and backup for FlashBlade.
Hardware failures under warranty should be addressed within the promised timeline.
I would want to see more AI features with Dell PowerScale (Isilon).
If I could improve one thing on Dell PowerScale (Isilon), it would be better object storage as it recently breached into S3, and that capability could be broadened.
Its configuration should be easier.
 

Setup Cost

Dell PowerScale is costly but seen as worthwhile due to features, flexible licensing, and ease of management.
Pure Storage FlashBlade is costlier but valued for performance, ease, and reliability, justifying its comprehensive licensing with included software.
It's quite expensive for the amount of storage we have.
My experience with pricing, setup costs, and licensing for Dell PowerScale (Isilon) shows it's a premium platform, so it's a big amount of money.
The pricing is excellent.
 

Valuable Features

Dell PowerScale (Isilon) offers scalable, efficient storage with advanced management, data protection, and security features for versatile workloads.
Pure Storage FlashBlade offers high performance, scalability, and ease of use with excellent data protection and seamless integration for large storage needs.
Dell PowerScale offers high scalability and stability as well, making it a valuable solution for enterprises.
In our AI initiatives, Dell PowerScale (Isilon) plays a significant role in data analysis, data fusion; principally, it is involved in data analysis, data extraction, and statistical analysis.
Single files are limited to four terabytes in our configuration, however, the system can support up to 16 terabytes, so we can scale based on that too.
We can plug in many blades, and we can have data up to one terabyte.
 

Categories and Ranking

Dell PowerScale (Isilon)
Ranking in File and Object Storage
3rd
Average Rating
9.0
Reviews Sentiment
7.5
Number of Reviews
64
Ranking in other categories
NAS (2nd)
Pure Storage FlashBlade
Ranking in File and Object Storage
6th
Average Rating
8.8
Reviews Sentiment
7.9
Number of Reviews
37
Ranking in other categories
All-Flash Storage (16th), Software Defined Storage (SDS) (7th)
 

Mindshare comparison

As of June 2025, in the File and Object Storage category, the mindshare of Dell PowerScale (Isilon) is 8.8%, up from 8.1% compared to the previous year. The mindshare of Pure Storage FlashBlade is 5.8%, down from 6.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
File and Object Storage
 

Featured Reviews

Yamandù Correa - PeerSpot reviewer
Helps reduce data silos, improves performance, and flexibility
Our customers have seen improvement in performance, space, and flexibility for growth and management of data protection through snapshots and other systems. The AI models are something we are looking forward to trying but are not there yet. The algorithms are specific to each company and their industry. One of the most important things is the data localization. Many scenarios require the project data traffic to be close to where it is generated and read. A lot of interaction is between users and systems. So data localization is one of the most important things in terms of using the data algorithm. We don't need to manage our PowerScale and run its storage from any location yet but it is something that is coming for sure because several customers have centralized data in main data centers. But in different locations across the globe. So this is going to be a topic. I think that through the different functionalities that the Dell platform can grant, it will be a great player. When it comes to the flexibility for supporting various data workloads while protecting them, the combination of PowerScale and PPDM and all the other components of the data protection solution right now is key. So the automatic integration between the products is one of the killer features of the solution itself. PowerScale helped us to reduce data silos. This has simplified the management of large data environments in terms of scalability and management instead of having a different solution for the right reports to see how the data evolves and how to better manage them. PowerScale can do that in combination with the other components of the ecosystem. In terms of risk reduction, We need to mention the data management and the recovery part, So of course, the integration with the data domain is key. The fact that we can rely on these functions, and the fact that we also manage different customers, and possess the recovery plans and tests that can prove the solution is working.
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.
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Top Industries

By visitors reading reviews
Computer Software Company
13%
Educational Organization
13%
Financial Services Firm
9%
Manufacturing Company
9%
Educational Organization
16%
Computer Software Company
13%
Financial Services Firm
10%
Manufacturing Company
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

Questions from the Community

What do you like most about Dell EMC PowerScale (Isilon)?
The solution provides massive performance, scalability, efficiency, and ease of management.
What is your experience regarding pricing and costs for Dell EMC PowerScale (Isilon)?
We have to go through a certified reseller for Dell PowerScale (Isilon). From a value standpoint, it performs very well.
What needs improvement with Dell EMC PowerScale (Isilon)?
I would make Dell PowerScale (Isilon) better by improving SmartSync in the graphical user interface. Currently, everything has to be done through the command line, and I prefer having a graphical i...
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 outages when we need to quickly move data between different data centers. It ensure...
What is your experience regarding pricing and costs for Pure Storage FlashBlade?
The pricing for FlashBlade is between cheap and moderate. FlashBlade is worth the money due to the experience and performance it delivers, including quick response times.
What needs improvement with Pure Storage FlashBlade?
Its configuration should be easier. There should be easier language for the configuration.
 

Also Known As

PowerScale, Dell EMC Isilon
No data available
 

Overview

 

Sample Customers

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,
ServiceNow, Mercedes-AMG Petronas Motorsport, Dominos, Man AHL
Find out what your peers are saying about Dell PowerScale (Isilon) vs. Pure Storage FlashBlade and other solutions. Updated: June 2025.
856,873 professionals have used our research since 2012.