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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
1st
Average Rating
8.8
Reviews Sentiment
7.0
Number of Reviews
81
Ranking in other categories
File and Object Storage (2nd)
FreeNAS
Ranking in NAS
14th
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 May 2026, in the NAS category, the mindshare of Dell PowerScale (Isilon) is 14.5%, down from 17.8% compared to the previous year. The mindshare of FreeNAS is 3.7%, up from 2.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
NAS Mindshare Distribution
ProductMindshare (%)
Dell PowerScale (Isilon)14.5%
FreeNAS3.7%
Other81.8%
NAS
 

Featured Reviews

BE
Systems Engineer at Unisity LLC
Flexibility and reliability have supported seamless data growth
I cannot think of anything to improve about Dell PowerScale (Isilon). The hardest challenge we have is due to how we've bought things over time. The way that we moved to the PowerEdge platform for the newer systems creates a scale problem as I still buy the older style systems, which are more dense storage. They're different chassis, so the problem we run into in the data center is the depth of the actual equipment. The newer equipment, if we buy an FX910 or a 900, it's a lot shorter in scale than if I buy an 83,000, which is much bigger. This makes it more complicated for deployment.
Vincenzo D'Aniello - PeerSpot reviewer
Software developer at TREXON S.R.L.
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

"What I like the most about Dell PowerScale (Isilon) is that the storage capacity is very high."
"The solution provides massive performance, scalability, efficiency, and ease of management."
"Dell has the AI to protect the EMA."
"The capacity and scalability are what I appreciate the most about it; that was huge for us. We saw its benefits immediately after we started using it."
"The solution's scalability is very good."
"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."
"Dell PowerScale (Isilon) definitely deserves ten out of ten for scalability."
"PowerScale helped free up our employees' time to focus on other business priorities. There are now automated jobs such as backing up and replicating data, that reduce the footprint we have. Those types of tasks were previously done manually."
"The solution has been very stable so far."
"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."
"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."
"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 integrates well into either Windows or Linux environments."
"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 I like about it is that I can work on it from any computer or any device."
"Its stability is the most valuable. It is reliable, and we don't have to worry too much about it."
 

Cons

"The replication could lend itself to some improvement around encryption in transit and managing the racing of large volumes of data. The process of file over and file back can be tedious. Hopefully, you never end up going into a DR. If you do go into a DR, you know the data is there on the remote site. However, in terms of the process of setting up the replicates and filing them back, that is just very tedious and could definitely do with some improvement."
"I think Dell PowerScale (Isilon) can be improved, as the cost models are quite expensive for administration."
"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."
"The deployment of Dell PowerScale (Isilon) is not really complex but depends on the hardware deployment."
"The solution isn't suitable for small environments or small customers."
"I would like to see Dell PowerScale (Isilon) improved by enhancing the user interface, OneFS, to make advanced conversation and troubleshooting more specific, upgrade and batch management, providing deeper built-in analytics for performance and capacity planning."
"I think Dell PowerScale (Isilon) can be improved, as the cost models are quite expensive for administration."
"The product needs to improve CLI since commands are complex. The search option is also difficult since you must give the full path."
"FreeNAS should be better prepared for clustering."
"The latest version of the dashboard doesn't work as good as the previous version. Sometimes we change our dashboard back to the previous version because the latest version just doesn't work as good."
"FreeNAS should be better prepared for clustering."
"The latest version of the dashboard doesn't work as good as the previous version."
"If you find the documentation, it is always incomplete and fragmented."
"Its support for Hyper-V clusters."
"The support for S3 needs to be improved."
"They can improve the integration with PSA systems. This functionality could be better."
 

Pricing and Cost Advice

"The price of the solution is high."
"Our company finds the pricing high, but it decreases over time."
"The pricing is excellent."
"Price was also a significant factor in our decision to go with PowerScale. The team at EMC, now Dell EMC, came through with a highly competitive offer that tipped the scales towards their solution. There was only one other solution around the same price point, but it could not match PowerScale on features. That other solution is no longer on the market."
"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 solution's licensing cost varies based on capacity and performance requirements."
"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."
"Pricing for this solution is reasonable."
"We use the free version of the program."
"For our configuration, we pay a little bit less than €10,000 ($12,000 USD) per year."
"Its price is okay. It suits our needs."
"Its licensing cost is based on the hardware capacity."
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Top Industries

By visitors reading reviews
Manufacturing Company
11%
Computer Software Company
9%
Financial Services Firm
9%
Government
8%
Comms Service Provider
13%
Performing Arts
12%
Computer Software Company
9%
Manufacturing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business19
Midsize Enterprise20
Large Enterprise46
By reviewers
Company SizeCount
Small Business7
Large Enterprise2
 

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)?
As I mentioned before, we did not purchase Dell PowerScale (Isilon) directly. Since our organization is a government entity, the country policy does not allow direct purchases; it goes through a fo...
What needs improvement with Dell EMC PowerScale (Isilon)?
I think Dell PowerScale (Isilon) could improve some functions such as Apache S3 or containerized storage support, as these aspects are not well-developed. Their support system is weak; many issues ...
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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: April 2026.
893,221 professionals have used our research since 2012.