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Dell PowerScale (Isilon) vs Qumulo 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

Everpure FlashArray
Sponsored
Average Rating
9.0
Reviews Sentiment
7.4
Number of Reviews
211
Ranking in other categories
All-Flash Storage (4th)
Dell PowerScale (Isilon)
Average Rating
8.8
Reviews Sentiment
7.1
Number of Reviews
80
Ranking in other categories
NAS (1st), File and Object Storage (2nd)
Qumulo
Average Rating
7.8
Reviews Sentiment
7.3
Number of Reviews
8
Ranking in other categories
NAS (13th), File and Object Storage (21st)
 

Featured Reviews

Sowjanya MV - PeerSpot reviewer
Technical Lead at Wipro Limited
Has improved performance for mission-critical workloads and enabled seamless non-disruptive upgrades
The availability is 99.99%, which is the main factor any customer would need because their data should be available whenever they want to access it. This is one main critical thing. It is very easy to upgrade since Pure Storage FlashArray handles it well. Everything is non-disruptive now; previously, there were forklift shifts, but now that is not the case. Pure Storage FlashArray says no to forklift upgrades. Usually hardware requires downtime, but Pure Storage FlashArray has improved their footprint so that they are not asking for downtime; everything is just a non-disruptive activity, which is why customers are more inclined towards Pure Storage FlashArray. Customers want more of the models in their environment due to the performance they are giving, and everything is in one Pure1 Array console where we can view all the models on one page or just an orchestration tool. You don't miss anything; you have replication, notifications about replication, and details about which host groups replication is happening in and if that replication is successful or failed. On a daily basis, our purpose is to create volumes for infrastructure; our daily activities include creating volumes and mapping them to the host, doing any migrations from a VM, clearing the data stores, and carving the volumes to those VMs. One key factor is the data compression with a ratio of 5:1, focusing on space efficiency, inline deduplication, and the compression Pure Storage FlashArray works on; that is a major factor we can suggest to any customer. Analytical capabilities are crucial. Daily, we check the throughput and consumption, and Pure Storage FlashArray provides predictions for one year regarding usage. This prediction helps plan updates well ahead. For support, we just raise a case, and they follow up and get it done. There is also AI readiness, but with the model R2, we don't have much of that AI readiness. For others, we do have AI readiness that predicts capacity based on daily or monthly trends, enabling us to analyze how much space we need or if we need to expand the disk shelf. From an operational point of view, a good feature is that if you accidentally delete a volume, it will be retained in the destroyed state for the next twenty-four hours, which is not the same with any other vendor. I have worked in this storage domain for the past fifteen years, and this option is remarkable, benefiting any L1 or L2 engineer. Additionally, from a compliance perspective, Pure Storage FlashArray has REST APIs enabled. I have not explored automation much, but from a security standpoint, it is strong with encryption data. If you want to automate, you can easily integrate with all clouds and explore Pure Cloud for scheduling workloads, including volume creation. Customers find benefit in Pure Storage FlashArray's single management pane of glass due to the dual controller and active-active setup. If one of the controllers goes down, all workloads automatically shift to the other controller, ensuring their data is safe and accessible at all times. This is a highlighted feature that any customer desires because their data should always be accessible. For SAN workloads, we use Pure Storage FlashArray because for SAN FC fiber channel, we don't use it; we use NetApp for NAS activities. We have clearly split this, so SAN is for mission-critical applications, while network-attached storage handles file systems. This architecture helps us maximize the benefit from Pure Storage FlashArray due to the significant workloads from this giant retail client. From a footprint and energy consumption perspective, you can see energy consumption from the Pure1 storage portal on a daily basis, and it is very compact. The three models we use consume only three units, which is quite low. From a footprint and data center perspective, it doesn't occupy much space. As everything moves to cloud, there are requirements to avoid excess spending on data centers, and Pure Storage FlashArray is efficient in energy consumption and is environmentally friendly.
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.
VinceVitro - PeerSpot reviewer
Senior Storage Architect at a healthcare company with 1,001-5,000 employees
Useful data sharing, simple cluster scaling, and excellent support
One aspect of Qumulo that I hoped to see improved was its software upgrade process, which did see significant progress during my usage. Initially, upgrading the software resulted in several minutes of system downtime. However, by the time I departed last summer, the downtime had reduced to mere ten seconds. Although I am unsure if Qumulo has yet achieved a completely outage-free upgrade, I simply performed the upgrades early in the morning before the marketing department began its workday, so any downtime was inconsequential.

Quotes from Members

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

Pros

"The security operating system is its most valuable feature because it's very simple, easy to use, and operate. You don't have to do very serious training to operate this equipment. It's user-friendly and pretty straightforward."
"Pure Storage FlashArray is simple and easy to use. It offers protection when removing devices. It has the ability to undo deletes."
"The most valuable feature is how it simplifies the management of the SAN."
"It has improved the way our organization functions by improving the resilience of our infrastructure by quite a bit."
"It simplifies storage."
"If I want a product which has reliability and high speed, and Pure Storage is the first name that comes out of my mouth."
"The most valuable feature is test performance. It helps us store large amounts of data along with providing us faster retrieval of data."
"The solution helps to simplify storage."
"Regarding stability, I find no lagging, crashing, or downtime with Dell PowerScale (Isilon), and it is a highly scalable, stable, and reliable solution that I have experienced."
"Overall, the hardware itself, and the OneFS file system, are the best selling points, combined with the delivery and the installation."
"It has saved me from having to hire one person over the last six months, and our IT team has gotten about 40 percent of its time back."
"Customer service is absolutely satisfying, rating at least nine out of ten, as they have managed previous issues well."
"Using this product has enabled us to maximize the business value of our data because now, we can store all of our data in one place."
"I assess the stability and reliability of Dell PowerScale (Isilon) as perfect, as we haven't had any hiccups with it so far."
"The most valuable feature of Dell PowerScale (Isilon) is all the capabilities together."
"Dell PowerScale is a scalable solution. It allows non-disruptive upgrades and maintenance of the system."
"The data protection algorithm to protect the data between the nodes has been the most valuable feature."
"The data protection algorithm to protect the data between the nodes has been the most valuable feature. The integration with backup platforms such as Veeam and Veritas has also been valuable."
"The ratio of total operational cost to complexity versus feature set is very good."
"The most valuable feature of Qumulo is the ability to share files and reliability."
"The most valuable features of Qumulo are the ease of management and special permissions that are quick to enable. The overall performance of the solution is good."
"It is a very stable product. I never faced any issues."
"The most valuable features of Qumulo are its rolling updates and all-day availability."
"The most valuable feature is real-time analytics."
 

Cons

"A noticeable area for improvement is the support for object storage. The FlashArray does not natively support object storage like S3 or Swift, which pushes customers needing these features towards the more expensive FlashBlade."
"The higher education moves slowly. We are still looking forward to implementing the full list of existing features."
"They can also include file services such as NAS shares and CIFS shares. There should be provisioning of the file shares from a unified array."
"Pure Storage had operational challenges between 2016 to 2018, impacting perceived reliability."
"The file functionality could be better."
"The solution could improve by having a multi-tenant feature."
"Everything has been good, but we faced one issue last year while migrating volumes from one Pure Storage to another. The snapshots were not visible in the Veeam backup portal."
"Pricing could be better in comparison to other solutions."
"The pricing is expensive, but I think it's a fair value because it does manage itself."
"I think Dell PowerScale (Isilon) can be improved, as the cost models are quite expensive for administration."
"In the past year, it hasn't been as great. They seem to just follow KBS."
"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."
"The legacy file system for Epsilon didn't scale into the cloud and didn't have a separate OS."
"There is room for improvement with the updates. It can take a significant amount of time to do a major OS update."
"The solution lacks a cloud version."
"The management and monitoring tools comprise a disparate suite of products and the roadmap is very unclear."
"There is plenty of room for improvement. In the future, I would like to see non-disruptive updates."
"In the next release, I would like to see the ability to have more control at a terminal level of the file system."
"One aspect of Qumulo that I hoped to see improved was its software upgrade process, which did see significant progress during my usage. Initially, upgrading the software resulted in several minutes of system downtime. However, by the time I departed last summer, the downtime had reduced to mere ten seconds. Although I am unsure if Qumulo has yet achieved a completely outage-free upgrade, I simply performed the upgrades early in the morning before the marketing department began its workday, so any downtime was inconsequential."
"Some anti-theft permissions do not transfer well to Qumulo."
"Qumulo should continue to expand automation and orchestration capabilities."
"The support for iMac and protocols should be improved, not all features are available."
"The solution could improve availability and improve data protection or data services such as compression of deduplication."
"Qumulo should continue to expand automation and orchestration capabilities."
 

Pricing and Cost Advice

"It's expensive, but you get what you pay for."
"We feel that the pricing is fair and the licensing process was easy for both."
"The price-to-performance is good. I looked at Pure about three to four years back, but the price-to-performance wasn't right for us. Now, it's right."
"The cost has room for improvement."
"I'm good with the licensing. Of course, pricing can always be less... It's actually not a bad pricing model, considering I don't have to rip-and-replace."
"The price was slightly higher than others, but competitive, if you consider all the other features that you get from it."
"The price is too high."
"Price per terabyte is substantially higher than their competition. We would like to see it drop."
"Dell PowerScale (Isilon) is an expensive solution."
"Pricing for this solution is reasonable."
"This solution is priced slightly higher than others on the market but does offer good quality. With this solution's data reduction and compression, we were able to purchase less. Costs have dropped because of the data rate of compression and deduplication."
"It is a really expensive solution."
"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."
"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 pricing for this solution is reasonable."
"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 Qumulo is reasonable."
"The price of the solution is in the middle range compared to others. We look at the price per terabyte."
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Top Industries

By visitors reading reviews
Financial Services Firm
11%
Computer Software Company
10%
Manufacturing Company
9%
Construction Company
8%
Manufacturing Company
11%
Computer Software Company
10%
Financial Services Firm
9%
Government
8%
Computer Software Company
11%
Financial Services Firm
10%
Manufacturing Company
8%
Government
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business63
Midsize Enterprise36
Large Enterprise143
By reviewers
Company SizeCount
Small Business19
Midsize Enterprise20
Large Enterprise44
By reviewers
Company SizeCount
Small Business4
Midsize Enterprise2
Large Enterprise2
 

Questions from the Community

Which should I choose: HPE 3PAR StoreServ or Hitachi Virtual Storage Platform F Series?
Both are great platforms, but if you are considering all flash solutions, I would recommend you to consider Pure Stor...
What is your experience regarding pricing and costs for Pure Storage FlashArray?
I don't really know much about the pricing for Pure Storage FlashArray in terms of the absolute cost. Regarding Everg...
What needs improvement with Pure Storage FlashArray?
Despite liking Pure Storage FlashArray, there is room for improvement in automation. Pure Storage FlashArray needs to...
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 ...
What needs improvement with Dell EMC PowerScale (Isilon)?
I have experienced a RAM failure in some of the nodes of Dell PowerScale (Isilon), and that required hardware replace...
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Also Known As

Pure Storage FlashArray
PowerScale, Dell EMC Isilon
No data available
 

Overview

 

Sample Customers

Nielsen, Lamar Advertising, LinkedIn, Betfair, UT-Dallas
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,
County of Riverside Sheriff Department, Hyundai Mobis Automotive North America, University of Arizona, UCSD - San Diego Supercomputer Center, Medical College of Wisconsin, Sinclair Oil, Royal Dutch Shell, Kaiser Permanente, Deluxe Creative, Vexcel Imaging, University of Florida, The Madison Square Garden Company, Arizona State University, Cinesite, San Diego Padres Baseball, Johns Hopkins University - School of Medicine, IHME, EllieMae, Washington State University.
Find out what your peers are saying about Dell PowerScale (Isilon) vs. Qumulo and other solutions. Updated: April 2026.
886,174 professionals have used our research since 2012.