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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 (2nd), File and Object Storage (2nd)
Qumulo
Average Rating
7.8
Reviews Sentiment
7.3
Number of Reviews
8
Ranking in other categories
NAS (12th), 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

"We have seen savings in our storage. The speed of deployment has gone from several days to a few minutes. This product has reduced that time into minutes, simplifying storage for us."
"I find Pure Storage FlashArray to be much better than traditional storage because it has a GUI interface. It makes the process of allocating the storage much easier, and most activities are automated. It is like clicking a button for every task."
"We can store more for a cheaper price as opposed to paying for larger devices and larger rack spaces which get outdated sooner and which we'd have to change every two years. It simplifies storage for us."
"Pure Storage FlashArray offers numerous valuable features, such as low latency and high throughput."
"This solution has helped my organization by cutting down on provisioning time. I used to have to provision a VM and it would take ten minutes. Now, it takes thirty seconds."
"The solution is very reliable."
"The stability is perfect. The reliability is 100% and the latency is always lower than 1 millisecond."
"In Pure Storage FlashArray, the dedupe and compression are excellent, and performance is good too."
"Its most valuable feature is the DR capabilities replication."
"Dell PowerScale (Isilon) helps improve the way the organization functions through massive scalability, high performance, a single file system, high availability and reliability, flexible protocols, support for NFS, SMB, HDFS, strong security, cloud integration, efficiency, data protection, snapshot, queue, and sync queue, optimized for unstructured data."
"Dell PowerScale (Isilon) definitely deserves ten out of ten for scalability."
"What I like the most about Dell PowerScale (Isilon) is that the storage capacity is very high."
"The solution allows me to use SSMDS to store data for end users and share it within different locations."
"The most valuable feature we started using, beyond the initial scope for the solution, is the multi-protocol system that allows you to access the same set of files using different network protocols like NFS or SMB. PowerScale’s Unified Permission Model ensures that data security and access permissions are honoured regardless of whether the client is a Windows desktop or a Linux server"
"Our main goal is to do disaster recovery with whatever solution we use and Isilon makes it pretty simple to replicate those workloads over to our secondary data center."
"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."
"It is a very stable product. I never faced any issues."
"The feature that I like most is the analytics part of the file system."
"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."
"The most valuable features of Qumulo are its rolling updates and all-day availability."
"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 feature is real-time analytics."
 

Cons

"They have a product, FlashBlade, which is their object storage integration, and that's something that we haven't integrated with yet. This might be an area for additional focus as it would play into scalability, because the very nature of object storage is that it's infinitely scalable."
"FlashArray could improve on the administrative side. For example, when you need to upgrade the boxes, we can't do that ourselves. We need to open a ticket with support and have them do that for us. You don't need to be on the call with them. We tell them we have a slot that we want to upgrade, and they send us an email when it's done."
"I would like to see some improvements on the FlashBlade side around the CIFS space support. I am not super familiar with all the different NAS protocols that they run on their box, but there could be some improvements made on SMB CIFS side."
"Organizations with security concerns that prevent cloud utilization would benefit from a wider range of instruments available for offline operation. Currently, the limited selection of on-premise instruments hinders Pure Storage FlashArray's ability to compete effectively with other vendors."
"Some services could be inserted directly into the SAN, so Pure Storage could complete with the HyperFlex."
"When we were doing some tests, we found that there was an I/O freeze when they were switching the controller."
"We would like to see better troubleshooting aspects. It helps us if we can find out where the problem is. Right now, it's difficult. Sometimes it's difficult to pinpoint the issue. If they had more visibility and more troubleshooting feature built into the tool that would really help."
"We haven't seen ROI yet."
"I think Dell PowerScale (Isilon) can be improved, as the cost models are quite expensive for administration."
"Improvements could be made to reduce the costs and the high level of knowledge needed to maintain and use them."
"Backward compatibility is something Dell PowerScale (Isilon) could work on."
"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."
"Dell PowerScale can improve on its multi-tenant part because as a service provider, we have bigger clusters in data centers where we can serve multiple customers and grant them dedicated management points and automation features that can be managed in a multi-tenant environment."
"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."
"I'd like to see more Iceland products in the cloud so that we can port our data into different environments if needed. I would also like to see a virtual appliance or software-defined Iceland product."
"It would be nice to see tools like Superna Eyeglass built into PowerScale."
"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."
"The price of the software is a bit expensive, so a reduction in cost would make it more competitive."
"The solution could improve availability and improve data protection or data services such as compression of deduplication. In a future release, we'd like to have more cloud API integrations."
"Some anti-theft permissions do not transfer well to Qumulo."
"The support for iMac and protocols should be improved, not all features are available."
"Qumulo should continue to expand automation and orchestration capabilities."
"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."
 

Pricing and Cost Advice

"The price of the solution can be a bit expensive. There is an additional fee for support."
"We purchased a license to use this solution and we pay for the storage ourselves."
"The Evergreen Storage subscription is a really cool concept. As long as we maintain our subscription, we will get new controllers every three years and really never have a forklift upgrade like we currently are doing. Just that future-proofing is an ease off of my mind to know that I won't have to do what I'm dong right now again."
"It is cheaper than NetApp."
"When we bought the unit, we bought per capacity. So, the licensing is per capacity, and the only thing that we have to buy every year or every three years is maintenance. Included in that maintenance is the upgrade of the controllers every three years at no cost to us."
"No storage device is cheap, but Pure Storage is fairly priced and offers what you pay for. You get all the licenses in the future when you purchase a license."
"Cost-wise, it's been very effective."
"The pricing of Pure Storage FlashArray 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 pricing is excellent."
"The price of the solution can fluctuate. The price can be competitive or other times not. The price of the solution could be better."
"It is an expensive solution."
"We paid an additional fee to have Dell's ProDeploy Plus team implement it."
"Our company finds the pricing high, but it decreases over time."
"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."
"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 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
Computer Software Company
13%
Manufacturing Company
10%
Financial Services Firm
9%
Government
6%
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: March 2026.
884,873 professionals have used our research since 2012.