Dell Unity XT vs Kaminario K2 [EOL] comparison

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Dell Technologies and Silk are both solutions in the All-Flash Storage category. Additionally, 96% of Dell Technologies users are willing to recommend the solution, compared to 94% of Silk users who would recommend it.

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Executive Summary

We performed a comparison between Dell Unity XT and Kaminario K2 [EOL] based on real PeerSpot user reviews.

Find out what your peers are saying about Dell Technologies, NetApp, Everpure (formerly Pure Storage) and others in All-Flash Storage.

To learn more, read our detailed All-Flash Storage Report (Updated: October 2026).

Buyer's Guide

All-Flash Storage

October 2026

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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

Everpure FlashArray

Featured Reviews

Sowjanya MV

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.

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Taj Hussain

Assistant Manager, Technology Support & Services at a comms service provider with 51-200 employees

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.

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Engineerdb78

Network Engineer at a comms service provider with 10,001+ employees

A solution with a simple configuration and good stability but it's quite expensive

Access to technical support should be improved for our region. Technical support is good, but they're very hard to access. When we have a problem with this storage, it's usually related to a very bad configuration. All-Flash Storage is very, very expensive. They are important solutions so I don't really have any ideas about how to rectify this. The device could use better monitoring tools.

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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

"It helps to simplify storage because it has an easy front-end to access everything."

"The top-tier support and reliable storage are the most valuable features of this solution."

"The simplicity of it. The performance is good, but the simplicity is the best thing. Storage management is quite complex, but Pure Storage is easy to manage."

"We noticed a dramatic increase in application performance when moving it from NetApp to Pure Storage."

"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."

"The most valuable feature is its speed."

"For me, right now, it is the best storage solution in the market, by far."

"The first year, we started out with one or five terabytes and it took what was 20 terabytes of storage down to less than one terabyte."

More Everpure FlashArray pros

"Overall it is a stable versatile solution."

"Dell Unity XT offers data integration features."

"It’s helped with the overall stability of our VMware environment."

"It's the simplicity part of it. It's the ease of management, it's the call home, the CloudIQ functionality. It's all built in. I think Dell EMC has put a lot of thought into it."

"This product does bring a ROI, as I have seen it helps them to protect their investment since it is future-proof and scalable, so they don't have to change products every year or so."

"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're using Dell EMC Unity as our primary storage for our production and for our DR site, we've had no performance issues with it whatsoever and we're using it for everything."

"The setup was quite easy, straightforward."

More Dell Unity XT pros

"The increased performance is many times above our previous array performance in all metrics. Integration with vSphere features is also a definite plus."

"It has a very good duplication rate; very, very good."

"Using snapshots allows us to automate production database refreshes to development environments in minutes, rather than in hours."

"It provides a full feature set without separate licensing (deduplication, compression, snapshot, asynchronous replication, stable performance, etc.)."

"The most valuable feature is definitely the always-on data deduplication."

"So coupled with the simplicity, performance, and just absolute ease of use of the management of it, I don't know why anyone wouldn't buy it."

"Ease of use: My installers - my administrators over the system - they love how easy and fast it is to install and spin up a LUN and get going."

"It is consistently stable; haven't had a single issue with it."

More Kaminario K2 [EOL] pros

Cons

"We would like to integrate it more with our backup solutions."

"We had one instance with an eight-hour outage in our primary data center because the upgrade to the controller failed, and the controller redundancy didn't work."

"Reports of performance and LUN utilization could be improved."

"I'd like to see a move towards individual VMs for what the performance of each VM is in a VD infrastructure. I can see the overall volume, but I would love to see things in a more granular level on the VM side."

"In some cases, we get into very in-depth conversations around the movement of specific data and, what's more, chunk sizes. The documentation lacked any description or information on that."

"The support for NFS protocols right out-of-the-box need improvement. I'm used to other storage vendors who have NFS support right out-of-the-box, and Pure Storage doesn't seem to have anything."

"The problem is that we can only make a few groups, around five or six groups. I like groups and we need a lot of them. We had to put all the information in only a few groups and cannot make a more detailed separation of them."

"Some services could be inserted directly into the SAN, so Pure Storage could complete with the HyperFlex."

More Everpure FlashArray cons

"This lack bothers me a lot because it takes a lot of time and mistakes are made. Sometimes, a Hyper-V host gets a VMware LUN and vice-versa."

"In the management interface, you can only create one LUN at a time."

"They can certainly improve in terms of monitoring. The monitoring could be improved, and more features could be added."

"We would like to see the concept of Storage Groups brought back to this product line."

"The lack of deduplication reduces some of the competitiveness compared to other products."

"The only challenge I've ever had was with a Drive firmware upgrade."

"Because we can do synchronous replication between the two sites, this made the setup challenging for this piece. They did not know how to set this up initially. We ended up having to do bidirectional synchronous replication."

"The uses of tools to communicate with EMC directly. With EMC, I am not able to connect and resolve issues without assistance, so they can't do unattended maintenance on devices, which would be a massive benefit if they could."

More Dell Unity XT cons

"I would love to see capacity on its DRAM. I know it's not cost effective for them to do it, but I think that it could be a big differentiator and was a big differentiator from the beginning."

"I would like to see them work with Cisco, so it comes off the FIs, instead of having to go through my 10-gig network."

"There are some mid-market SMB customers that it may not fit the best for from a pricing perspective, but for the vast majority of our customers, once we aware of it and learned about the technology which it performed with, it fits a very useful metric."

"I would like them to improve the look of the product’s external casing and shelves."

"I think it should have better performance with small files. With big data, its performance is top notch, but it is difficult to load small files."

"I would like them to come down in price."

"The front panel of the drive shelf doesn't always seat firmly."

"I'd give it a perfect rating if I could push it to 300,000 IOPS like they promote; we just haven't been able to push that many IOPS out of our system."

More Kaminario K2 [EOL] cons

Pricing and Cost Advice

"Price per terabyte is substantially higher than their competition. We would like to see it drop."

"We evaluated Oracle and Hitachi, but Pure Storage had the better pricing."

"I don't know the exact cost but it's around $1,000."

"For us, as the customer, it reduced the price of the management."

"The guaranty that Pure Storage provides when you purchase it doesn't meet the overall capacity needs to provide extra storage, if needed. Thus, it is not meeting our expectations."

"My organization has a yearly license, but I believe that Pure Storage FlashArray has capacity-based licenses as well. I'm definitely happy with the pricing."

"There are no fees for licensing. The hardware is paid for only once."

"All storage is expensive so any price improvement would help."

More Everpure FlashArray pricing and cost advice

"Just from an overall power and heating usage, it costs substantially less than some of our existing solutions"

"The solution’s pricing is competitive."

"We looked at HPE Nimble but the price of the Unity XT was very good compared to the competition."

"This unit is one of the cheapest storage all-flash arrays in the market and it does well for what it is intended. It can be combined for both file and block storage."

"This solution is a good price for what you get."

"Our CAPEX was close to $42,000 and operating costs are below $1000."

"The price of Dell EMC Unity XT is higher compared to other solutions. The price should be less expensive."

"The price is up a little bit from what we used to pay so I'm hoping that it's a little bit of a better system than the VNXe was. But I still think it's a good value. It's new, so I'm sure there's room for the pricing to drop."

More Dell Unity XT pricing and cost advice

"The licensing is all-inclusive."

"The "extra" costs associated with features and options that are available off the shelf with Kaminario, make their value proposition extremely competitive."

"All features are provided in the licensing. The cost of Kaminario was less than the cost of a hybrid array."

"Licensing is very straightforward. The cost was considerably lower than other products we looked at."

"The Kaminario setup is simple and there are no hidden licensing fees so this area is a relief."

"I would like them to come down in price. It is as expensive as EMC, Hitachi, and other major vendors."

"Kaminario is very competitive on price. They also have a pay per TB model."

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Top Industries

By visitors reading reviews

Manufacturing Company

13%

Financial Services Firm

10%

Comms Service Provider

10%

Outsourcing Company

14%

Manufacturing Company

11%

Financial Services Firm

Construction Company

Outsourcing Company

18%

Financial Services Firm

18%

Manufacturing Company

13%

Construction Company

11%

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	73
Midsize Enterprise	38
Large Enterprise	160

By reviewers
Company Size	Count
Small Business	62
Midsize Enterprise	48
Large Enterprise	96

By reviewers
Company Size	Count
Small Business	4
Midsize Enterprise	4
Large Enterprise	9

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...

See all answers

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 ...

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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.

See all answers

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...

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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...

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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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IBM FlashSystem vs Everpure FlashArray

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Compared 24% of the time

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Compared 9% of the time

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Compared 5% of the time

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Compared 5% of the time

HPE Nimble Storage vs Dell Unity XT

Compared 4% of the time

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Compared 11% of the time

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Product Reports

Buyer's Guide

Everpure FlashArray

October 2026

Download Everpure FlashArray product report

Buyer's Guide

Dell Unity XT

October 2026

Download Dell Unity XT product report

Buyer's Guide

Kaminario K2 [EOL]

October 2026

Download Kaminario K2 [EOL] product report

Also Known As

Pure Storage FlashArray

EMC Unity, Dell EMC Unity

No data available

Overview

The FlashArray family delivers consistent, high-performance data services across block, file, and object workloads. As part of the Everpure Platform, it provides the foundation for a unified data plane, enabling applications to reliably access, protect, and manage data across environments with simplicity and predictability. With built-in capabilities such as inline data reduction, snapshots, replication, and ransomware resilience, FlashArray ensures efficient operations, protected data, and consistent application uptime.

As the foundation of the (unified) data plane, FlashArray enables policy-driven automation, monitoring, and centralized management while integrating across cloud and on-premises environments. Built on an Evergreen architecture, it supports non-disruptive upgrades and continuous performance improvements over time while simplifying operations at scale.

What Key Features Does FlashArray Offer?

Simplicity and Speed: Easy management and rapid performance enhancements.
Data Reduction: Effective deduplication and compression.
Flash Architecture: Seamless upgrades and outstanding resilience.
VMware Integration: Excellent compatibility with virtualization platforms.
Predictive Analytics: Strong insights for proactive management.

What Benefits Should Users Consider?

Reliability: Proactive support with minimal downtime.
Efficiency: Reduced storage footprint and enhanced data management.
Performance: Faster processing speeds and low latency.
User Experience: Simplified management with Evergreen model.

In industries like finance, banking, and healthcare, FlashArray supports high-performance storage needs focusing on virtualization and database environments. Employed for VMware workloads, disaster recovery, and storage provisioning, it ensures application performance in private or hybrid cloud setups while enhancing management of virtualized environments.

Everpure (formerly Pure Storage)

Dell Unity XT is renowned for its ease of use and management, high performance with all-flash arrays, and seamless integration with VMware. It's appreciated for robust data replication, multi-protocol support, inline compression, and deduplication capabilities, ideal for mid-range storage needs.

Known for its advanced HTML5 interface, Dell Unity XT offers unified block and file storage with rapid deployment and efficient storage utilization. Its scalability and cost-effectiveness make it appealing to users transitioning from older systems. The system supports databases like Oracle and SQL, alongside serving as network-attached storage (NAS). While recognized for performance, integration, and reliability in virtual environments, its deduplication, compression, and support quality are areas flagged for enhancement. There's a desire for improved synchronized replication and monitoring capabilities, enhanced VMware compatibility, and active-active controller functionality. Native cloud integration and better pre-sales support are also anticipated by users.

What are the main features of Dell Unity XT?

VMware Integration: Seamless operation within VMware environments.
Data Replication: Reliable and robust data replication features.
All-Flash Arrays: High-performance storage solution with all-flash capabilities.
Multi-Protocol Support: Flexible support for various storage protocols.
HTML5 Interface: Advanced and efficient management interface.

Where can users find ROI when evaluating Dell Unity XT?

Performance Optimization: Enhanced storage performance for demanding applications.
Scalability: Easily scales to meet growing business requirements.
Cost-Effectiveness: Competitive pricing for mid-range storage solutions.
Seamless Integration: Works smoothly with existing IT infrastructure.
Reliable Data Management: Secure and efficient handling of critical data.

In sectors relying heavily on virtualization and data-intensive applications, Dell Unity XT serves as a vital component in data centers. It plays crucial roles in hosting virtual machines, supporting extensive databases, and providing robust network-attached storage. This adaptability makes it a favored choice for organizations transitioning from traditional storage systems.

Dell Technologies

Kaminario K2 is the world’s only storage solution that delivers the predictability needed to handle the highly unpredictable world of modern businesses. This highly flexible all flash storage platform allows customers to cost-effectively scale capacity and performance to support their ever-changing business –seamlessly, on-demand and with no disruptions.

Data Sheet and eBook

Silk

Sample Customers

Nielsen, Lamar Advertising, LinkedIn, Betfair, UT-Dallas

Draper, Rio Grande Pacific, Royal Victoria Regional Health Centre

Wargaming.net, El Rio Community Health Center, ECN, SpotOption, Ashkelon College, Clearwater Analytics, Intigua, Cobb EMC Customer Case Study

Find out what your peers are saying about Dell Technologies, NetApp, Everpure (formerly Pure Storage) and others in All-Flash Storage. Updated: October 2026.

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