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Amazon FSx vs Dell PowerScale (Isilon) 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:
 

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 (15th), Software Defined Storage (SDS) (8th)
Amazon FSx
Ranking in File and Object Storage
15th
Average Rating
8.4
Reviews Sentiment
7.8
Number of Reviews
4
Ranking in other categories
File System Software (5th), Cloud Storage (14th)
Dell PowerScale (Isilon)
Ranking in File and Object Storage
3rd
Average Rating
9.0
Reviews Sentiment
7.4
Number of Reviews
67
Ranking in other categories
NAS (2nd)
 

Mindshare comparison

As of October 2025, in the File and Object Storage category, the mindshare of Pure Storage FlashBlade is 5.7%, down from 6.2% compared to the previous year. The mindshare of Amazon FSx is 1.0%, up from 0.1% compared to the previous year. The mindshare of Dell PowerScale (Isilon) is 8.6%, up from 8.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
File and Object Storage Market Share Distribution
ProductMarket Share (%)
Dell PowerScale (Isilon)8.6%
Pure Storage FlashBlade5.7%
Amazon FSx1.0%
Other84.7%
File and Object Storage
 

Featured Reviews

Parul-Patel - PeerSpot reviewer
High performance and throughput enhance IT backup management
The multi-dimensional scale-out design feature of Pure Storage FlashBlade is not in use in our environment. Regarding data reduction technologies, we don't get much deduplication because the data is already deduplicated from our FlashArray before we get to backup, so there is no benefit of deduplication. Regarding the integration with cloud-native ecosystem tools, we are not on cloud; we are strictly an on-premises solution. Pure Storage FlashBlade is not used by any end-user; it's used only for IT backup, with only about four people in our group managing it. I cannot recommend Pure Storage FlashBlade to other users depending upon their financial situation because it's an expensive solution, and the cost is very high, including licensing and renewal every year. I rate Pure Storage FlashBlade an eight out of ten.
MuhammadAzhar Khan - PeerSpot reviewer
Shared storage capabilities provide enterprise value with good reliability
Amazon FSx is more costly compared to other storage solutions like EBS or EFS. The auto-scaling feature should be improved, as it currently includes downtime. I need to manually increase the storage, which is not ideal. Integrating FSx with Windows Server is challenging; it's a long process involving Active Directory (AD) setup and synchronization.
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.

Quotes from Members

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

Pros

"The most valuable feature is Safe Mode."
"We have seen a reduction in the total cost of ownership by around 20%."
"It helps simplify our storage, because the user interface is very simple and the installation is easy."
"The ease of deployment and management has helped us simplify our storage. We also do not have to worry about capacity management as much. A lot of these things are native to Pure Storage."
"The initial setup was straightforward. If you know how to plug in power and network you're pretty much qualified. They were on site to configure the network, the box to fit into our network architecture. Other than that, we self-managed from there."
"The tool's most valuable features are data warehousing, speedy recovery, and analytics. Its latest release is cost-effective."
"The main feature I have found to be product replication."
"The solution provides many controllers."
"The shared storage capability is highly valuable."
"FSx operates as an independent service, not tied to any server, which eliminates dependencies between applications for storage."
"We used it for disaster recovery perspective behind a number of resources, like batch services and RDS."
"On a scale of one to ten, I would rate Amazon FSx a ten."
"I rate the stability of Amazon FSx ten out of ten."
"The most valuable feature of Dell PowerScale is its scalability."
"The most valuable feature of the solution is the unlimited scalability. The tool has high availability and high storage capacity."
"The most valuable feature is its single space of storage."
"Certainly, we have seen return on investment and peace of mind, especially with our two clusters that are linked together, where one is a disaster recovery solution for the other."
"Isilon is flexible in supporting various data workloads while keeping them protected. Dell continues to release updates and patches which enhance the use of this solution. This includes offering ransomware protection."
"The recent introduction of inline deduplication and compression has drastically improved our efficiency ratios to make it an economical product. This solution has also had a positive impact on our employees' productivity because it reduces the amount of admin that our staff needs to handle."
"Dell PowerScale (Isilon) definitely deserves ten out of ten for scalability."
"The stability of the solution is good."
 

Cons

"We haven't been able to use much of the cloud area of Pure Storage. We have a storage server and it would be better if it could integrate with other cloud features of this solution."
"The speed could be improved."
"They need better integration with public clouds along with a better hybrid solution."
"Commvault has mainly driven the Analytics, providing data and reports. However, the product has room for improvement, especially regarding storage analytics. Upgrading firmware has caused issues, requiring feature disabling to revert to traditional backups. The firmware upgrades sometimes affect Commvault backups."
"The features provided for SMB customers are limited."
"It's on the expensive side, as expected for a niche product."
"It usually comes down to just what you hit and the value you're getting when you spend the money and license the products. I would always go, "If you want to make things better, lower your price and make your licensing simpler." There's always an opportunity around that."
"There could be improvements in public cloud integration."
"Amazon FSx is more costly compared to other storage solutions like EBS or EFS."
"Amazon FSx is more costly compared to other storage solutions like EBS or EFS."
"A direct FTP feature would be beneficial instead of relying on transmission services."
"From my experience, there are areas in Amazon FSx where more performance is needed, as they will be looking for higher IOPS."
"I've been facing a challenge when doing a failover from FSx side. AWS console does not refresh within a half hour."
"That said, for the other security features, it would be helpful if Tenable - and I know it's outside the scope of this question itself - had Isilon-specific plugins."
"The product needs to improve CLI since commands are complex. The search option is also difficult since you must give the full path."
"We have issues in Brazil with the procurement of solutions because we have to check the entire market and justify the pricing to our audit institutions, making it difficult to keep with the same vendor."
"They should add some new services that should be for on-premises, and more analytics should be there for the data, allowing for a deep dive from that analytics, which is currently missing."
"Improvements could be made to reduce the costs and the high level of knowledge needed to maintain and use them. We had old hard drives with moving parts in Dell PowerScale, and due to this, we must switch to a more efficient environment with all-flash."
"The thing that they are working on now, and we are following closely is more native cloud integrations. The way that we envision workloads in the future is around moving compute to data instead of the other way around. So, we would like to have a single pane glass to manage storage across a variety of different platforms, including native cloud. That would be awesome."
"Dell PowerScale (Isilon) could improve the load distribution capability. For example, in some cases, the system load is not distributed automatically on all the nodes but is concentrated only on one. You have a peak request on only one node and the others don't do anything."
"Dell PowerScale (Isilon) could improve in terms of having some problems with using IPv6 and IPv4 on the same namespace at the same time, which is one of our biggest problems as you have to do some really bad workarounds to get that working."
 

Pricing and Cost Advice

"The price could be cheaper."
"Our licensing is renewed annually."
"The product is very expensive."
"I feel that the price could always be lowered."
"It's a costly solution, but Pure Storage FlashBlade doesn't require additional licenses. All of the software is combined into one bundle."
"It is within reason for what you get. From what we have found comparing it to other vendors, it is in the same range as others. Given the choice, we would definitely redeploy it based on the cost."
"I have seen ROI. It has allowed me to increase the density of my VMs without having to purchase anything additional."
"Licensing fees are paid yearly."
"The lowest price I have paid is $370 or $380 per month, while the highest can exceed $3,000 per month."
"It's a high-cost offering amounting to three or four million Swedish kronor, or about $400,000 or euros, for approximately 480 terabytes of storage."
"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 pricing is excellent."
"Our company finds the pricing high, but it decreases over time."
"It is an expensive product with a high storage capacity suitable for large data requirements."
"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 (Isilon) is an expensive solution."
"The pricing for this solution is reasonable."
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Top Industries

By visitors reading reviews
Computer Software Company
12%
Financial Services Firm
11%
Manufacturing Company
10%
Government
7%
Manufacturing Company
14%
Financial Services Firm
12%
Computer Software Company
10%
Retailer
9%
Computer Software Company
13%
Manufacturing Company
10%
Financial Services Firm
9%
Healthcare Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business11
Midsize Enterprise11
Large Enterprise20
No data available
By reviewers
Company SizeCount
Small Business16
Midsize Enterprise17
Large Enterprise36
 

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 needs improvement with Amazon FSx?
From my experience, there are areas in Amazon FSx where more performance is needed, as they will be looking for highe...
What is your primary use case for Amazon FSx?
Our customers mainly use Amazon FSx for high-performance computing. Our customers are mainly in the Life Science and ...
What advice do you have for others considering Amazon FSx?
There is an ongoing project where my customers are exploring the FSx solution, but not yet for AI-driven projects; th...
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)?
It's considered between mid and high-end regarding. Dell usually knows how to position each model. If the customer wa...
What needs improvement with Dell EMC PowerScale (Isilon)?
With every iteration of the OneFS system, new features are being added, and the UI is being updated here and there. S...
 

Also Known As

No data available
Amazon FSx for Windows File Server, Amazon FSx for Lustre
PowerScale, Dell EMC Isilon
 

Overview

 

Sample Customers

ServiceNow, Mercedes-AMG Petronas Motorsport, Dominos, Man AHL
Neiman Marcus, T Mobile, Docxellent, Matrix, Lyell
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,
Find out what your peers are saying about Amazon FSx vs. Dell PowerScale (Isilon) and other solutions. Updated: September 2025.
868,759 professionals have used our research since 2012.