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Dell Unity XT vs VAST Data comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Sep 18, 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
Ranking in All-Flash Storage
2nd
Average Rating
9.0
Reviews Sentiment
7.2
Number of Reviews
232
Ranking in other categories
No ranking in other categories
Dell Unity XT
Ranking in All-Flash Storage
6th
Average Rating
8.4
Reviews Sentiment
6.5
Number of Reviews
198
Ranking in other categories
No ranking in other categories
VAST Data
Ranking in All-Flash Storage
27th
Average Rating
10.0
Reviews Sentiment
7.5
Number of Reviews
2
Ranking in other categories
File and Object Storage (18th), NVMe All-Flash Storage Arrays (9th)
 

Mindshare comparison

As of November 2026, in the All-Flash Storage category, the mindshare of Everpure FlashArray is 6.4%, down from 6.5% compared to the previous year. The mindshare of Dell Unity XT is 6.3%, up from 6.0% compared to the previous year. The mindshare of VAST Data is 3.0%, up from 2.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
All-Flash Storage Mindshare Distribution
ProductMindshare (%)
Everpure FlashArray6.4%
Dell Unity XT6.3%
VAST Data3.0%
Other84.3%
All-Flash Storage
 

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.
TH
Team Lead, Technology Support & Services at ibl-unisys
Managing data protection has become consistent and analytics now drive reliable performance
The most valuable features I find in Dell Unity XT include its robust performance and reliability. My thoughts about its in-line deduplication feature are positive. I would assess the value of Dell Unity XT multi-cloud support for my IT environment as highly beneficial. I do utilize Dell Unity XT data protection features. These features have assisted in ensuring data integrity by providing reliable backup and recovery options. Dell Unity XT integration with VMware helps scalability and availability through seamless operations and enhanced performance. My opinion on its Cloud IQ analytics is that it delivers insightful data that aids in operational efficiency.
Alan Powers - PeerSpot reviewer
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.

Quotes from Members

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

Pros

"NVMe data storage platform that's easy to set up and easy to use. It's stable, with a lower response time, and quick technical support."
"Pure gives us better compression, it's easier to manage, a lot less hands-on, and the biggest selling point for me was the replacement of the hardware, the controllers, without any major expense to the clinic."
"Pure Storage FlashArray simplifies maintenance and management with its intuitive GUI, making storage allocation and other processes easy to understand, even for beginners."
"Our clients see a reduction in total cost of ownership by around 40%."
"I would definitely suggest this solution to a colleague because of the ease of use."
"It's very fast and very easy to use. It performs well and is both flexible and compatible. We like it because it's easy to use."
"All updates, upgrades, and hardware work are all performed on-line with no impact."
"It has a small footprint, as the current system is only four units per rack, it's got good speed for the price as it uses eMLC, an advanced type of SSD, and it's very scalable, and we're not paying for capacity as we get free controllers every three years."
"Especially because we are a small IT shop, having something that is easy, that does not take a lot of time to set up, monitor, and manage helps us a ton."
"The UI itself is fantastic, and the ease of administration is far better than Unisphere or Navisphere ever were. It's very easy to manage. The fact that it has built-in APIs means our automation people can help us automate a lot of tasks, and that has been helpful. And, of course, it's really fast. Obviously, that doesn't hurt anything at all."
"Unity has reduced the complexity and improved productivity tenfold compared to what it used to be."
"The Unisphere management interface: We are very familiar with it. It manages all the EMC devices that we have. Management is easy because it is part of Unisphere, which is self-learning."
"Dell EMC Unity XT has helped our organization with the high availability, it has been working very well and the performance has been good with an old flash solution that we are using, and it has improved the reliability and speed of virtual machines."
"The fact that it reduces our downtime gives us incredible cost savings."
"I like that when you log in it gives you a dashboard of what your storage looks like."
"One of the things that I like the most about it is how they have changed the Unisphere GUI, and how it is now HTML5. It is so easy to use. Also, the array itself is so simple, easy to set up and easy to use, but it still has that great Dell EMC technology behind it."
"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 had to contact customer support when a drive failed as I was doing a couple of OS upgrades."
"I would like to see more detailed reporting on the data. However, it would be nice to know what are the exact VMs usage after deduplication and/or what that VMs actual latency and bandwidth is, outside of VMware."
"The overall scalability for this product could be improved as well as having a single console to management multiple arrays."
"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."
"Reports of performance and LUN utilization could be improved."
"It needs to improve its price."
"We would like to see more cloud support, which we know is coming, although it's not out yet. It's going to be released in the next versions. That would be the biggest win, if additional cloud support is built into the array."
"It falls far short of protocol support."
"We do a lot of VMware. It only integrates with VMware in one way, which is virtual volumes. I don't really have any visibility on anything else. From VMware, I can't look into Unity. From Unity, I can't look into VMware unless I am using virtual volumes, where they integrate together happily, but we are not using that. I would like better integration for non-virtual volume VMware use."
"It's very frustrating that it's not backward-compatible with the previous platforms, so it's a struggle for a lot of our customers."
"I would like the device to have the ability to pull down its own firmware. That would be a great thing."
"The interface can be a little challenging for someone new."
"Perhaps the user interface could be better."
"Dell EMC's competitor has a clustering technology. In the next release, it would be nice if they could build that into the product."
"We do a lot of VMware. It only integrates with VMware in one way, which is virtual volumes."
"One thing they could do is lower the price point."
"The write performance could be improved because it is less than half of the read performance."
"The read/write ratio is an area in the solution with some flaws and needs improvement."
 

Pricing and Cost Advice

"While more expensive than NetApp, Pure Storage FlashArray offers superior performance that often justifies the higher cost and adds value overall."
"We have seen a reduction in TCO."
"The pricing of Pure Storage FlashArray is reasonable."
"It could always be lower, but it's okay."
"There should be quite a bit of reduction of TCO with just licensing (and stuff) because we run the VM environment off it."
"We have seen a reduction in total cost of ownership (TCO)."
"The price was slightly higher than others, but competitive, if you consider all the other features that you get from it."
"The price is reasonable."
"The only improvement would be a lower cost per unit/disks, however on the whole we are very pleased with this product."
"Most licenses for the solution are free but upgrades are available when adding additional software or storage."
"The product’s pricing should be improved."
"In the SQL Server instances in our data warehouse, we immediately saw a great return on investment."
"I liked the price point when we purchased it."
"The return on the investment was simply speeding up our entire vSphere stack, which allowed our developers and engineers to get their workloads done faster and simpler. We were experiencing VM snapshot times of 45 minutes to two or three hours, and it shrunk it down to under five minutes."
"It's an expensive solution, particularly for medium companies. One device costs about 30,000 euros. The support contract is quite expensive as well. We are currently looking for other lower-cost solutions."
"It scales, but then you have to buy additional stuff."
"We acquired VAST Data as a one-time, capital purchase."
"Price-wise, VAST Data is not the cheapest, not the most expensive one."
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Top Industries

By visitors reading reviews
Manufacturing Company
13%
Comms Service Provider
10%
Financial Services Firm
10%
Outsourcing Company
9%
Outsourcing Company
14%
Manufacturing Company
11%
Financial Services Firm
8%
Computer Software Company
7%
Financial Services Firm
13%
Manufacturing Company
10%
Computer Software Company
8%
Outsourcing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business73
Midsize Enterprise38
Large Enterprise160
By reviewers
Company SizeCount
Small Business62
Midsize Enterprise48
Large Enterprise96
No data available
 

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?
When comparing cost, I find that the cost is either the same or slightly higher, but that is returned by the ease of ...
What needs improvement with Pure Storage FlashArray?
The only thing I think could be improved is price. The price is the main concern for our customers.
What is the Biggest Difference Between Dell EMC Unity and NetApp AFF?
I saw that you have doubts about what you chose. I have a lot of experience with the constructor, honestly I can reco...
What is the Biggest Difference Between Dell EMC Unity and NetApp AFF?
They’re both great solutions and I’ve used both. EMC is being VERY aggressive on pricing which may be the undoing of...
What is the Biggest Difference Between Dell EMC Unity and NetApp AFF?
First of all the decision should be taken looking at similar products in terms of capacity and performance. I will sh...
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Also Known As

Pure Storage FlashArray
EMC Unity, Dell EMC Unity
No data available
 

Overview

 

Sample Customers

Nielsen, Lamar Advertising, LinkedIn, Betfair, UT-Dallas
Draper, Rio Grande Pacific, Royal Victoria Regional Health Centre
Norwest Venture Partners, General Dynamics Information Technology, Ginkgo Bioworks
Find out what your peers are saying about Dell Unity XT vs. VAST Data and other solutions. Updated: September 2026.
920,769 professionals have used our research since 2012.