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Dell PowerScale (Isilon) vs FreeNAS comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Nov 7, 2024

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

Dell PowerScale (Isilon)
Ranking in NAS
2nd
Average Rating
9.0
Reviews Sentiment
7.5
Number of Reviews
65
Ranking in other categories
File and Object Storage (3rd)
FreeNAS
Ranking in NAS
12th
Average Rating
8.4
Reviews Sentiment
7.2
Number of Reviews
9
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of July 2025, in the NAS category, the mindshare of Dell PowerScale (Isilon) is 17.7%, up from 17.3% compared to the previous year. The mindshare of FreeNAS is 2.0%, down from 2.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
NAS
 

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.
Vincenzo D'Aniello - PeerSpot reviewer
Open-source with great disk management and task synchronization
The system itself allows you to add any feature. The only bad thing is that this maybe depends on FreeBSD, and sometimes finding documentation is difficult. For example, we knew that previous versions automatically enabled the Linux kernel, yet with the recent version, this was no longer the case. Now, there was the possibility of being able to create Debian-based jails, and finding the documentation was not easy or fast. That said, in the end, we succeeded. If you find the documentation, it is always incomplete and fragmented.

Quotes from Members

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

Pros

"Our users are able to easily roll back snapshots without going through IT."
"The most valuable features of the solution are flexibility and ease of implementation."
"The most valuable feature of Dell PowerScale (Isilon) integration with other solutions because of the standard file system protocol."
"It assists with eliminating storage silos because it provides SMB and NFS protocols. PowerScale has also helped free up our employee's time to focus on other business priorities."
"It is stable and very user-friendly."
"Dell PowerScale includes a wealth of features that are important from a security and recovery perspective."
"The solution's most valuable features are scalability and flexibility."
"The best thing is that it works. We don't have to maintain it too much; we usually upgrade once a year."
"What I like about it is that I can work on it from any computer or any device. The initial setup is very simple. The setup wizard is really helpful."
"The ease of use of the 'jail', the management of backups, and copies to easily create test and pre-production scenarios have speeded up the development and distribution of business apps."
"The solution has been very stable so far."
"Its stability is the most valuable. It is reliable, and we don't have to worry too much about it."
"FreeNAS is much simpler and easier to use than other solutions, but we don't have the complete range of features that come with the full version."
"It has the best storage capacity."
"It integrates well into either Windows or Linux environments."
 

Cons

"I would want to see more AI features with Dell PowerScale (Isilon)."
"The UID mapping and how to configure mapping-related things is a struggle."
"The solution is expensive. It's quite expensive for the amount of storage we have."
"Always, there is room for improvement in terms of cybersecurity, as new challenges are continually emerging in the market."
"The price always has room for improvement."
"We're still fairly new with it. It's been a pretty positive experience thus far. However, they could improve implementation, as we had to rack and stack it ourselves."
"The support offered by the product is an area of concern where improvements are required."
"If they integrated some functions, as they have on Data Domain with a cyber recovery vault, it would be ideal."
"If you find the documentation, it is always incomplete and fragmented."
"The one thing that I find difficult to do which is very time-consuming is that I like to have a backup of the important files."
"FreeNAS should be better prepared for clustering."
"They can improve the integration with PSA systems. This functionality could be better."
"The support for S3 needs to be improved."
"They should include clustering for the solution."
"The latest version of the dashboard doesn't work as good as the previous version."
 

Pricing and Cost Advice

"It is an expensive solution."
"The platform is not cheap. However, on the software side, you can choose what you want license. So, you can start your licensing with the features that you need, then after buying the platform add some other features."
"The only drawback for us is that it's a large upfront investment. This was a huge decision for a startup company to make. It took a bit for us to get over the line on it, but we have not regretted it."
"Pricing for this solution is reasonable."
"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."
"Dell PowerScale is expensive on the start-up side but we can recoup those costs quickly by not having to reapply the savings to other equipment."
"The general cost for a system like this is expensive. The total cost depends on your use case. You need to pay for every additional feature that you use."
"The price of the solution is high."
"We use the free version of the program."
"Its licensing cost is based on the hardware capacity."
"Its price is okay. It suits our needs."
"For our configuration, we pay a little bit less than €10,000 ($12,000 USD) per year."
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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
13%
Comms Service Provider
10%
Performing Arts
9%
Financial Services Firm
8%
 

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 FreeNAS?
The ease of use of the 'jail', the management of backups, and copies to easily create test and pre-production scenarios have speeded up the development and distribution of business apps.
What needs improvement with FreeNAS?
The system itself allows you to add any feature. The only bad thing is that this maybe depends on FreeBSD, and sometimes finding documentation is difficult. For example, we knew that previous versi...
 

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,
Morroni Technologies Inc., Creative Integrations
Find out what your peers are saying about Dell PowerScale (Isilon) vs. FreeNAS and other solutions. Updated: June 2025.
860,592 professionals have used our research since 2012.