Dell PowerScale (Isilon) vs VAST Data comparison

Dell Technologies and VAST Data are both solutions in the File and Object Storage category. Dell Technologies is ranked #3 with an average rating of 8.8, while VAST Data is ranked #18. Dell Technologies holds a 8.8% mindshare in FaOS, compared to VAST Data’s 4.4% mindshare. Additionally, 96% of Dell Technologies users are willing to recommend the solution, compared to 100% of VAST Data users who would recommend it.

Comparison Buyer's Guide

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Executive SummaryUpdated on Nov 4, 2024

Dell PowerScale and VAST Data compete in the enterprise storage solutions market. While Dell PowerScale offers more competitive pricing and support, VAST Data leads with advanced features that justify its higher cost.

Features: Dell PowerScale is known for scalability, robust data management, and ease of integration. VAST Data focuses on exceptional performance, unique architecture, and optimized efficiency for modern data workloads.

Ease of Deployment and Customer Service: Dell PowerScale provides a straightforward deployment process and comprehensive support, ensuring smooth implementation. VAST Data requires more setup but is recognized for attentive and effective customer service.

Pricing and ROI: Dell PowerScale generally has lower initial costs, catering to budget-conscious organizations. VAST Data's setup cost is higher but promises superior ROI due to technological efficiencies and performance benefits.

To learn more, read our detailed Dell PowerScale (Isilon) vs. VAST Data Report (Updated: June 2025).

Buyer's Guide

Dell PowerScale (Isilon) vs. VAST Data

June 2025

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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

Mindshare comparison

As of June 2025, in the File and Object Storage category, the mindshare of Pure Storage FlashBlade is 5.8%, down from 6.3% compared to the previous year. The mindshare of Dell PowerScale (Isilon) is 8.8%, up from 8.1% compared to the previous year. The mindshare of VAST Data is 4.4%, up from 3.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.

File and Object Storage

Featured Reviews

Eric Black

Solutions Architect at Recovery Point Systems

The ability to leverage multi-tenancy along with immutability is a huge benefit for us

The only thing I feel FlashBlade is missing is the SOS API. If it had SOS API, that would put it well over the top. Veeam Backup specifically has started to streamline their API, and they are doing that with SOS API. They have optimized it. Any of the S3 devices out there that support this SOS API can have far more API calls at once. On our side, that translates to better restoration. With SOS API, it can leverage far more restorations at a single given time or read from the device in simple terms. That results in maximizing the output and throughput from the device itself.

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Scott Taylor

Senior Infrastructure Specialist at a non-profit with 51-200 employees

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.

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Alan Powers

HPC CTO at a manufacturing company with 10,001+ employees

Stability-wise, a device that has been up and running for years

The failover capability and resiliency are some of the solution's valuable features. The big thing is resilience because it has richer coding in it, so multiple devices can't fail. Also, one can still access a number of CBoxes that can allow one to access their file system. Once a device fails, it fails the transparency of the end-user, and it just starts using another resource. The encryption capability, the snapshots, along with a whole bunch of features make the tool valuable. VAST Data keeps adding more and more features all the time.

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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 features of FlashBlade include its replication capabilities, reports, and easy allocation. Everything is user-friendly."

"The performance of FlashBlade is excellent. It does not necessarily leverage the SOS API that some of the newer products leverage, but I found its speed pretty much on par and comparable. It is fast, and it does what it is supposed to do."

"Using this solution has made our backups more reliable."

"The snapshots, replication, and the ability to have immutable blades are the most valuable features. You're putting data snapshots out in those blades, and they cannot be touched. Its performance is great."

"The tool's most valuable feature is its fast performance, especially in handling snapshots. It helps during power outages when we need to quickly move data between different data centers. It ensures efficient replication and helps maintain our data centers' uptime."

"The initial setup is pretty easy and simple."

"The initial setup is pretty quick."

"We have seen a reduction in the total cost of ownership by around 20%."

More Pure Storage FlashBlade pros

"Eyeglass is used to monitor for malware, which is very useful for us."

"Our users are able to easily roll back snapshots without going through IT."

"The stability of the solution is good."

"The fact that we were able to set it up, use it, and, for the most part, didn't have to worry about it after we had it set up has been valuable."

"I assess the stability and reliability of Dell PowerScale (Isilon) as perfect, as we haven't had any hiccups with it so far."

"This is the best platform that we could have for storage utilization. It is affordable and scalable. At the end of the day, it's something that we find very easy to use."

"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."

"It has allowed us to have more consistent quality controls. It has also allowed us to expand the number of servers in clients processing and accessing data, allowing us to get a lot bigger projects out the door."

More Dell PowerScale (Isilon) pros

"This has been one of the most reliable storage systems that I have ever used."

"The solution is useful for machine learning and scientific applications, including computer simulations."

Cons

"Compared to, for example, Hitachi NAS, the solution is not mature at all. It's just in its infancy as far as technology goes."

"File storage needs a lot of improvement. Mainframe connectivity also needs improvement because it requires additional components to be integrated with Pure Storage FlashBlade. If you want to keep your backup data, then this becomes an even more expensive solution because Pure Storage FlashBlade will not be able to meet your backup needs."

"I would like to see better integration."

"I would like to have Snapshots and Snapmail in the next release. People who came from a NetApp background, especially expect these features."

"It would be beneficial if the layer could support the S3 protocol and be container ready in the next release."

"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 speed could be improved."

"In the realm of micro-services, I think that Pure Storage can do well if they start getting in there and making their arrays more micro-services ready."

More Pure Storage FlashBlade cons

"The solution isn't suitable for small environments or small customers."

"Improvements could be made to reduce the costs and the high level of knowledge needed to maintain and use them."

"The product’s expansion capacity, pricing clarity, and ease of use need improvement."

"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."

"Some improvements to the NFS support would be of interest to us."

"The cost of Dell PowerScale is currently high and there is room for improvement."

"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."

"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."

More Dell PowerScale (Isilon) cons

"The read/write ratio is an area in the solution with some flaws and needs improvement."

"The write performance could be improved because it is less than half of the read performance."

Pricing and Cost Advice

"Support is a separate line item. Support is a different cost, but whatever your support is now, that's what you're going to pay forever. If your support's $100 today, six years from now it's $100. It doesn't fluctuate unless you upgrade it, or change it, etc."

"In my opinion, we have paid the right price for the product. I don't think that it is too much or too little."

"The pricing is relatively expensive due to the FlashBlade technology. However, for companies needing quick and reliable data access, the cost is justified."

"Licensing fees are paid yearly."

"The pricing for FlashBlade is between cheap and moderate."

"Our customers have seen a reduction in TCO."

"I understand that it is competitively priced compared to other brands."

"We used a reseller for the purchase."

More Pure Storage FlashBlade pricing and cost advice

"It is an expensive solution."

"Dell PowerScale is an expensive solution compared to other products like Qumulo."

"The price of Dell PowerScale (Isilon) is reasonable."

"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."

"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 the solution can fluctuate. The price can be competitive or other times not. The price of the solution could be better."

"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."

More Dell PowerScale (Isilon) pricing and cost advice

"Price-wise, VAST Data is not the cheapest, not the most expensive one."

"We acquired VAST Data as a one-time, capital purchase."

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Top Industries

By visitors reading reviews

Educational Organization

14%

Computer Software Company

14%

Financial Services Firm

11%

Manufacturing Company

Computer Software Company

13%

Educational Organization

13%

Manufacturing Company

Financial Services Firm

Computer Software Company

15%

Manufacturing Company

14%

Financial Services Firm

13%

University

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

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...

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What is your experience regarding pricing and costs for Pure Storage FlashBlade?

The pricing for FlashBlade is between cheap and moderate. FlashBlade is worth the money due to the experience and per...

See all answers

What needs improvement with Pure Storage FlashBlade?

Its configuration should be easier. There should be easier language for the configuration.

See all answers

What do you like most about Dell EMC PowerScale (Isilon)?

The solution provides massive performance, scalability, efficiency, and ease of management.

See all answers

What is your experience regarding pricing and costs for Dell EMC PowerScale (Isilon)?

We have to go through a certified reseller for Dell PowerScale (Isilon). From a value standpoint, it performs very well.

See all answers

What needs improvement with Dell EMC PowerScale (Isilon)?

I would make Dell PowerScale (Isilon) better by improving SmartSync in the graphical user interface. Currently, every...

See all answers

Can you provide any information you may have on VAST Data?

Here are some technical details about VAST Data: VAST Data is a software-defined storage platform designed to scale...

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Comparisons

Red Hat Ceph Storage vs Pure Storage FlashBlade

Compared 11% of the time

MinIO vs Pure Storage FlashBlade

Compared 11% of the time

Pure Storage FlashArray vs Pure Storage FlashBlade

Compared 10% of the time

Dell ECS vs Pure Storage FlashBlade

Compared 6% of the time

Qumulo vs Pure Storage FlashBlade

Compared 4% of the time

More Pure Storage FlashBlade Competitors

NetApp FAS Series vs Dell PowerScale (Isilon)

Compared 14% of the time

Dell ECS vs Dell PowerScale (Isilon)

Compared 12% of the time

Qumulo vs Dell PowerScale (Isilon)

Compared 9% of the time

HPE StoreEasy vs Dell PowerScale (Isilon)

Compared 6% of the time

Red Hat Ceph Storage vs Dell PowerScale (Isilon)

Compared 6% of the time

More Dell PowerScale (Isilon) Competitors

NetApp AFF vs VAST Data

Compared 11% of the time

Qumulo vs VAST Data

Compared 9% of the time

Databricks vs VAST Data

Compared 8% of the time

MinIO vs VAST Data

Compared 7% of the time

Red Hat Ceph Storage vs VAST Data

Compared 6% of the time

More VAST Data Competitors

Product Reports

Buyer's Guide

Pure Storage FlashBlade

May 2025

Download Pure Storage FlashBlade product report

Buyer's Guide

Dell PowerScale (Isilon)

June 2025

Download Dell PowerScale (Isilon) product report

Buyer's Guide

NVMe All-Flash Storage Arrays

May 2025

Download VAST Data product report

Also Known As

No data available

PowerScale, Dell EMC Isilon

No data available

Overview

FlashBlade is the industry’s most advanced scale-out storage for unstructured data, powered by a modern, massively parallel architecture to consolidate complex data silos (like backup appliances and data lakes) and accelerate tomorrow’s discoveries and insights.

Pure Storage

Dell EMC PowerScale (Isilon) storage solutions are designed to help manage data for enterprises of all types. Dell PowerScale systems are simple to install, manage, and scale to virtually any size and include a choice of all-flash, hybrid, or archive nodes. Dell PowerScale solutions stay flexible and reliable no matter how much storage capacity is added, how much performance is required, or how business needs change in the future.

With Dell PowerScale, your data lake always stays simple to manage, simple to grow, simple to protect, and simple enough to handle the most demanding current and future workloads.

Ideal for companies of any size, from small enterprises to multi-national ones, Dell PowerScale storage provides secure collaboration, modular scalability, flexible consumption models, and easy cloud integrations, all with management tools spanning multiple platforms.

Key Benefits of Dell EMC PowerScale Storage

Centralized management: Manage your storage infrastructure from a single unified platform.
Data protection: Dell PowerScale offers security, data protection and replication tools. Back up and protect your data from cyber-attacks with an integrated ransomware defense system.
Artificial intelligence: PowerScale is the foundation for building an integrated and optimized IT infrastructure for AI projects, from concept to production.
Cloud support: Store and manage your data on the cloud and move data between your data center and the cloud. Dell PowerScale runs data-intensive cloud workloads with no outbound traffic costs.
Long-term storage: Dell PowerScale offers highly efficient and resilient active archive storage or long-term data retention for large-scale data archives. With the proven scalability architecture of PowerScale, you can meet your growing archiving demands. Dell PowerScale has a wide variety of enterprise-grade data protection and security options to keep your archived data safe.

Reviews from Real Users

Dell EMC PowerScale storage stands out among its competitors for a number of reasons. Two major ones are its scalability capabilities and its user-friendly centralized management system.

Rachel B., a chief operations officer & acting CFO at Like a Photon, writes, "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."

Keith B., the director of IT at NatureFresh Farms, writes, "The single pane of glass for both IT and for the end-user is a valuable feature. On the IT side, I can actually control where things are stored, whether something is stored on solid-state drives or spinning drives... The single pane of glass makes it very easy to use and very easy to understand. We started at 100 terabytes, and we moved to 250 and it still feels like the exact same system and we're able to move data as needed."

Dell Technologies

Innovation to break decades of data storage trade-offs.

VAST Data

Sample Customers

ServiceNow, Mercedes-AMG Petronas Motorsport, Dominos, Man AHL

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,

Norwest Venture Partners, General Dynamics Information Technology, Ginkgo Bioworks

Buyer's Guide

Dell PowerScale (Isilon) vs. VAST Data

June 2025

Free Report: Dell PowerScale (Isilon) vs. VAST Data

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