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Dell PowerScale (Isilon) vs NetApp Private Storage 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
7.4
Number of Reviews
67
Ranking in other categories
File and Object Storage (3rd)
NetApp Private Storage
Ranking in NAS
17th
Average Rating
8.6
Reviews Sentiment
6.7
Number of Reviews
15
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of October 2025, in the NAS category, the mindshare of Dell PowerScale (Isilon) is 16.5%, down from 17.1% compared to the previous year. The mindshare of NetApp Private Storage is 2.1%, up from 1.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
NAS Market Share Distribution
ProductMarket Share (%)
Dell PowerScale (Isilon)16.5%
NetApp Private Storage2.1%
Other81.4%
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.
Atilla Celiloglu - PeerSpot reviewer
Has supported continuous broadcasting with reliable performance and consistent operations
They can make more solutions for cloud integration in NetApp Private Storage. It should be easier to use the cloud S3 integration, maybe from a NetApp interface, where users can choose the type of storage before sending to S3. I would like to see more audit and performance logs via cloud integrations and ONTAP. Without the need for separate software.

Quotes from Members

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

Pros

"My experience with Dell as a vendor is pretty good; they are probably one of the best in the industry."
"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."
"You plug in a new node and data starts migrating over to it, and IT spreads out the load. We've added multiple nodes to the system since deploying it. The process is pretty seamless, and we are able to do it with no downtime. It's a very easy process to do."
"The tool's most valuable features are high density and scalability."
"PowerScale allows us to manage storage without managing RAID groups or migrating volumes between controllers. It has really simplified things. We're not having to worry about the underlying infrastructure. That takes care of itself. We just worry about the data. It's really easy for deploying and managing storage at the petabyte scale."
"Dell PowerScale (Isilon) definitely deserves ten out of ten for scalability."
"The most valuable feature of Dell PowerScale (Isilon) integration with other solutions because of the standard file system protocol."
"The most valuable feature of the solution is its performance."
"NetApp has its own dedicated operating system, so it will not be affected by any wireless piggybacking or malware. That's the beauty of NetApp's operating system."
"The solution is stable."
"For recording and stability, NetApp Private Storage is the best."
"The most valuable feature is integration."
"Integration with other NetApp solutions and merging them is manageable."
"It gave us a platform which could clearly arrange all our files and volumes."
"The solution scales well."
"Very stable and very scalable."
 

Cons

"The support offered by the product is an area of concern where improvements are required."
"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."
"Improvements could be made on the object storage side."
"The solution can be a bit complex for those not well versed in the technology."
"It would be nice to see tools like Superna Eyeglass built into PowerScale."
"There is room for improvement in its handling of object storage."
"Because of the magic that it does 'under the hood,' it is very difficult to find out within the system where all your storage is going. That's a little bit of a ding that we have on it. It does so much magic in order to protect itself from drive failures or multiple drive failures, that it automatically handles the provisioning and storage of your data. But by doing that, finding out why a file of a certain size, or a directory of a certain size, is using more storage than is being reported in InsightIQ, is very difficult to discern."
"Dell's customer service needs improvement. Specifically, hardware failures under warranty should be addressed within the promised timeline."
"I'm not sure how easy it is to use on the cloud versus on-prem. If they have different user experiences, they should work to make the two as similar as possible to make it easy for a user to understand both even if they only deal mainly with one."
"They can make more solutions for cloud integration in NetApp Private Storage. It should be easier to use the cloud S3 integration, maybe from a NetApp interface, where users can choose the type of storage before sending to S3."
"There may actually be so many features that the end-user gets lost in the volume."
"The hardware does not last as long as it could with new software."
"The solution could improve by having better support experts. For example, they do not have clear instructions on configuration."
"The users find the new version's GUI complicated to use."
"I think that it should work better with Microsoft solutions, more integrated with Microsoft. We also need integrated NAS and block storage."
"NetApp Private Storage is still integrated into the ISCSI connectivity and the FC protocol. I would recommend them to migrate to the FCIP because the SAN switches are moving further to an FCIP, and are scaling out of the ISCSI connectivity. Sooner or later, that will be an issue for NetApp Private Storage. An NFCIP should be available to them moving three years down the line."
 

Pricing and Cost Advice

"It is an expensive product with a high storage capacity suitable for large data requirements."
"The pricing is excellent."
"The solution's licensing cost varies based on capacity and performance requirements."
"It is a really expensive solution."
"Dell PowerScale (Isilon) is an expensive solution."
"The pricing for this solution is reasonable."
"Dealing with the product costs and licensing areas is getting easier since Dell is simplifying the licensing process and licensing packages offered to users."
"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 price of NetApp Private Storage is similar to other solutions. There is typically an annual license required for this solution."
"In general, I am pleased with the pricing, though it is a little high."
"We negotiate whatever deal we can get on the type of storage that it is, but it's totally under our control,."
"NetApp Private Storage is cheaper here in India compared to other solutions, such as Dell."
"The price could be lower."
"It is an expensive solution."
"The product is costly."
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Top Industries

By visitors reading reviews
Computer Software Company
12%
Manufacturing Company
11%
Financial Services Firm
9%
Government
8%
Computer Software Company
13%
Manufacturing Company
10%
Financial Services Firm
10%
Educational Organization
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business16
Midsize Enterprise17
Large Enterprise36
By reviewers
Company SizeCount
Small Business6
Midsize Enterprise2
Large Enterprise7
 

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)?
The cost is competitive with other vendors such as HP. I always compare prices between two vendors, and they are good in this situation.
What needs improvement with Dell EMC PowerScale (Isilon)?
Sometimes, it takes too long to set up everything. That's something I would want them to improve. The main challenge I face with it now is that my team is accustomed to using other vendors, and whe...
What do you like most about NetApp Private Storage?
NetApp is faster than other storage brands.
What is your experience regarding pricing and costs for NetApp Private Storage?
The product is costly. Also, we need to pay for features like SnapMirror, etc. I rate its pricing a nine out of ten.
What needs improvement with NetApp Private Storage?
NetApp is a great storage device, but sometimes support is not accessible. Also, the current version has removed most of the dashboard features. We have to use the CLI for some tasks. Additionally,...
 

Also Known As

PowerScale, Dell EMC Isilon
NPS
 

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,
ASE IT, Concerto Cloud
Find out what your peers are saying about Dell PowerScale (Isilon) vs. NetApp Private Storage and other solutions. Updated: September 2025.
869,952 professionals have used our research since 2012.