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Dell PowerScale (Isilon) vs Zadara comparison

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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
8.5
Pure Storage FlashBlade boosts ROI by reducing costs, enhancing efficiencies, increasing VM density, and saving 20%-85% in time.
Sentiment score
7.3
Dell PowerScale scales efficiently, consolidates workloads, and optimizes costs, enhancing data management and storage reliability across sectors.
Sentiment score
8.2
Zadara offers cost-effective scalability, eliminating upfront investments with flexible, nearly limitless capacity, potentially saving 50% in time and money.
It does not require much management once you set up correctly, so it saves time, allowing an admin to focus on other work.
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.
The cost is not cheaper compared to AWS, and we have not seen the expected return on investment.
 

Customer Service

Sentiment score
7.0
Pure Storage FlashBlade support is praised for responsiveness and knowledge but criticized for slower responses and occasional language barriers.
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
8.2
Zadara's exceptional, 24/7 global customer service and technical expertise reduce user workload, earning high satisfaction ratings.
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.
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.
We lack adequate response times and a 24/7 service level agreement.
I rate the technical support from Zadara as nine out of ten.
 

Scalability Issues

Sentiment score
8.8
Pure Storage FlashBlade is praised for scalability, ease of expansion, and support, despite some areas needing improvement.
Sentiment score
7.8
Dell PowerScale excels in scalability and integration, managing large workloads efficiently while offering flexible storage solutions for enterprises.
Sentiment score
7.6
Zadara provides scalable, flexible workload management, supporting business growth with adjustable tiers and high performance for various needs.
Pure Storage FlashBlade is scalable.
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.
Zadara is a fully-fledged platform, and our customers are happy with its use.
 

Stability Issues

Sentiment score
8.8
Pure Storage FlashBlade is praised for its impressive stability and reliability, with minimal disruptions and consistent uptime even during upgrades.
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
7.5
Users appreciate Zadara for its stability, high-availability, and reliability, noting minimal downtime and dependable performance in demanding environments.
In case there is any issue with any blade, the data is moved to another.
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.
 

Room For Improvement

Users seek better cloud integration, enhanced deduplication, improved support, protocol enhancements, simpler configuration, and a more intuitive interface.
Dell PowerScale could improve with better cloud integration, simpler configuration, enhanced data management, security, and performance, especially for small files.
Zadara needs better communication, advanced features, broader support, improved infrastructure, and user-friendly upgrades to enhance market competitiveness.
Technical support definitely needs significant improvement.
Its configuration should be easier.
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.
Adding AI capabilities could enhance the offering as well.
Maintenance can also be complicated, especially when deeper troubleshooting requires navigating the CLI and searching for logs.
 

Setup Cost

Pure Storage FlashBlade offers high performance and features, justifying its cost with no extra software fees and fixed support costs.
Dell PowerScale is pricey but offers value in total cost, scalability, and performance, making it a worthwhile investment.
Zadara offers predictable pay-per-use pricing, with all-inclusive features and support, appealing to cost-conscious enterprise buyers.
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.
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 is considered expensive.
 

Valuable Features

Pure Storage FlashBlade offers fast, scalable, and user-friendly storage with efficient integration, analytics, and versatility for diverse needs.
Dell PowerScale offers easy management, scalability, strong data protection, integration, and supports diverse workloads with high reliability.
Zadara offers flexible cloud integration, scalable storage solutions, and predictable costs with high performance, reliability, and user-friendly support.
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.
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.
The most valuable feature is its storage management capability.
Zadara's troubleshooting feature is very valuable for me.
 

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)
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)
Zadara
Ranking in File and Object Storage
20th
Average Rating
8.6
Reviews Sentiment
7.6
Number of Reviews
12
Ranking in other categories
All-Flash Storage (33rd), Software Defined Storage (SDS) (18th), Compute Service (10th), Public Cloud Storage Services (15th)
 

Mindshare comparison

As of July 2025, in the File and Object Storage category, the mindshare of Pure Storage FlashBlade is 5.8%, down from 6.4% compared to the previous year. The mindshare of Dell PowerScale (Isilon) is 8.8%, up from 8.1% compared to the previous year. The mindshare of Zadara is 0.5%, down from 0.7% 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.
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.
Kirubel Behailu - PeerSpot reviewer
Enhancing storage management efficiency with user-friendly experience
Our customers are using Zadara for their research and development environments. We provide infrastructure for government projects, but we are often not fully aware of their specific usage.  I typically use it for our infrastructure and offer both Zadara and Microsoft Azure to our customers Zadara…
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Top Industries

By visitors reading reviews
Computer Software Company
14%
Financial Services Firm
11%
Educational Organization
9%
Manufacturing Company
9%
Computer Software Company
13%
Manufacturing Company
10%
Financial Services Firm
9%
Healthcare Company
8%
Computer Software Company
21%
Manufacturing Company
13%
Financial Services Firm
7%
Real Estate/Law Firm
4%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

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 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)?
There will always be room for improvement with Dell PowerScale (Isilon). They should add some new services that shoul...
What needs improvement with Zadara?
The initial installation was difficult because many steps required the command line interface (CLI). Maintenance can ...
What is your primary use case for Zadara?
I use this product as storage. Specifically, I use it as big storage. That's the main use case for Zadara ( /products...
What advice do you have for others considering Zadara?
As for the pros and cons, the main concerns are the complexity of the initial installation and the complicated mainte...
 

Also Known As

No data available
PowerScale, Dell EMC Isilon
No data available
 

Overview

 

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,
Time, Inc. A&E Network, The Washington Post, News UK, McGraw Hill, Gilt, Toshiba, Deloitte, VMware
Find out what your peers are saying about Dell PowerScale (Isilon) vs. Zadara and other solutions. Updated: June 2025.
861,524 professionals have used our research since 2012.