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.

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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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Yamandù Correa

Head of Infrastructure and Network Services at a computer software company with 1,001-5,000 employees

Helps reduce data silos, improves performance, and flexibility

Our customers have seen improvement in performance, space, and flexibility for growth and management of data protection through snapshots and other systems. The AI models are something we are looking forward to trying but are not there yet. The algorithms are specific to each company and their industry. One of the most important things is the data localization. Many scenarios require the project data traffic to be close to where it is generated and read. A lot of interaction is between users and systems. So data localization is one of the most important things in terms of using the data algorithm. We don't need to manage our PowerScale and run its storage from any location yet but it is something that is coming for sure because several customers have centralized data in main data centers. But in different locations across the globe. So this is going to be a topic. I think that through the different functionalities that the Dell platform can grant, it will be a great player. When it comes to the flexibility for supporting various data workloads while protecting them, the combination of PowerScale and PPDM and all the other components of the data protection solution right now is key. So the automatic integration between the products is one of the killer features of the solution itself. PowerScale helped us to reduce data silos. This has simplified the management of large data environments in terms of scalability and management instead of having a different solution for the right reports to see how the data evolves and how to better manage them. PowerScale can do that in combination with the other components of the ecosystem. In terms of risk reduction, We need to mention the data management and the recovery part, So of course, the integration with the data domain is key. The fact that we can rely on these functions, and the fact that we also manage different customers, and possess the recovery plans and tests that can prove the solution is working.

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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 product is scalable and easy to expand."

"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."

"It is very easy to use, and it is very fast."

"The most valuable features include the ease of implementation, ease of use and the speed that you can do backup and recovery on."

"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."

"FlashBlade offers low latency, high throughput, and seamless scalability."

"The most valuable feature of this solution is performance."

"The most valuable feature is Safe Mode."

More Pure Storage FlashBlade pros

"The tool comes with cheap disks and works fast for video content."

"PowerScale helped free up our employees' time to focus on other business priorities. There are now automated jobs such as backing up and replicating data, that reduce the footprint we have. Those types of tasks were previously done manually."

"Its most valuable feature is the DR capabilities replication."

"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."

"The best thing is that it works. We don't have to maintain it too much; we usually upgrade once a year."

"My advice to other companies considering Dell PowerScale (Isilon) is that it takes a little time to understand the product, but once you have it set up and running, it will run stable for all its lifetime."

"The technical support has been excellent. I would give them a ten out of ten for support."

"It assists with eliminating storage silos because it provides SMB and NFS protocols. PowerScale has also helped free up our employee's time to focus on other business priorities."

More Dell PowerScale (Isilon) pros

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

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

Cons

"I have not seen ROI."

"There is some room for new features related to authentication and integration with Kubernetes, and other solution using S3 Bucket."

"The Pure Storage Orchestrator is our biggest pain point at the moment. If we can have more say in future developments of feature sets that we will need to support for our use case, that would be pretty beneficial to us."

"The technical support needs to improve. When we open a case, it is auto assigned to a support tech person. Nine out of ten times, we get an email right back saying that person is off until tomorrow. I cannot handle that. They just did this over the weekend to us, too. I had to call our rep and have them do something about it."

"I would like to see more deduplication."

"I would like to see better integration."

"On our dedupe during our initial buy, we were expecting a number a little higher like 4x. However, we are getting about 3.6. While it is close enough, it doesn't quite hit the numbers. So, this has been a challenge."

"I want efficiency. FlashBlade doesn't have efficiency now."

More Pure Storage FlashBlade cons

"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."

"The UID mapping and how to configure mapping-related things is a struggle."

"The solution’s interface and pricing could be improved."

"There are some missing features in the product, especially when our company needs to do some tape backup, and we see that the tool doesn't have integration capabilities."

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

"They could improve implementation, as we had to rack and stack it ourselves."

"Dell PowerScale needs to reduce its price."

"If I could improve one thing on Dell PowerScale (Isilon), it would be better object storage as it recently breached into S3, and that capability could be broadened."

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

"I feel that the price could always be lowered."

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

"The price of this solution could be made more affordable."

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

"The price could be cheaper."

"It's a costly solution, but Pure Storage FlashBlade doesn't require additional licenses. All of the software is combined into one bundle."

"The product is very expensive."

"I have seen ROI. It has allowed me to increase the density of my VMs without having to purchase anything additional."

More Pure Storage FlashBlade pricing and cost advice

"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."

"Our company finds the pricing high, but it decreases over time."

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

"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."

"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 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."

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

16%

Computer Software Company

13%

Financial Services Firm

10%

Manufacturing Company

Computer Software Company

13%

Educational Organization

13%

Financial Services Firm

Manufacturing Company

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...

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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...

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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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