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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 scales efficiently, consolidates workloads, and optimizes costs, enhancing data management and storage reliability across sectors.
Sentiment score
8.5
Pure Storage FlashBlade boosts ROI by reducing costs, enhancing efficiencies, increasing VM density, and saving 20%-85% in time.
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.
It does not require much management once you set up correctly, so it saves time, allowing an admin to focus on other work.
 

Customer Service

Sentiment score
8.4
Dell PowerScale support is helpful yet inconsistent; higher-tier engineers excel, but COVID-19 strains first-line support response.
Sentiment score
7.0
Pure Storage FlashBlade support is praised for responsiveness and knowledge but criticized for slower responses and occasional language barriers.
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.
The support is done through email and is not that great, making it a very problematic area I've been dealing with for over four years.
 

Scalability Issues

Sentiment score
7.8
Dell PowerScale excels in scalability and integration, managing large workloads efficiently while offering flexible storage solutions for enterprises.
Sentiment score
8.8
Pure Storage FlashBlade is praised for scalability, ease of expansion, and support, despite some areas needing improvement.
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.
Pure Storage FlashBlade is scalable.
 

Stability Issues

Sentiment score
8.3
Dell PowerScale (Isilon) offers reliable, stable performance with minimal downtime and resilience against unexpected issues, despite minor setup challenges.
Sentiment score
8.8
Pure Storage FlashBlade is praised for its impressive stability and reliability, with minimal disruptions and consistent uptime even during upgrades.
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 could improve with better cloud integration, simpler configuration, enhanced data management, security, and performance, especially for small files.
Users seek better cloud integration, enhanced deduplication, improved support, protocol enhancements, simpler configuration, and a more intuitive interface.
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.
Technical support definitely needs significant improvement.
Its configuration should be easier.
 

Setup Cost

Dell PowerScale is pricey but offers value in total cost, scalability, and performance, making it a worthwhile investment.
Pure Storage FlashBlade offers high performance and features, justifying its cost with no extra software fees and fixed support costs.
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.
The pricing of Pure Storage FlashBlade is expensive compared to other products I used from other companies in the past, but one benefit is that they have built-in ransomware protection.
 

Valuable Features

Dell PowerScale offers easy management, scalability, strong data protection, integration, and supports diverse workloads with high reliability.
Pure Storage FlashBlade offers fast, scalable, and user-friendly storage with efficient integration, analytics, and versatility for diverse 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.
The best features of Pure Storage FlashBlade include better throughput and better performance.
 

Categories and Ranking

Dell PowerScale (Isilon)
Ranking in File and Object Storage
3rd
Average Rating
9.0
Reviews Sentiment
7.5
Number of Reviews
65
Ranking in other categories
NAS (2nd)
Pure Storage FlashBlade
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)
 

Mindshare comparison

As of July 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 6.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
File and Object Storage
 

Featured Reviews

Scott Taylor - PeerSpot reviewer
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.
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
10%
Manufacturing Company
9%
Financial Services Firm
9%
Computer Software Company
14%
Educational Organization
12%
Financial Services Firm
11%
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.
860,168 professionals have used our research since 2012.