Dell Unity XT vs Lenovo ThinkSystem DE Series comparison

Dell Technologies and Lenovo are both solutions in the All-Flash Storage category. Dell Technologies is ranked #5 with an average rating of 8.6, while Lenovo is ranked #22 with an average rating of 10.0. Dell Technologies holds a 5.9% mindshare in AFS, compared to Lenovo’s 1.8% mindshare. Additionally, 96% of Dell Technologies users are willing to recommend the solution, compared to 100% of Lenovo users who would recommend it.

Comparison Buyer's Guide

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Executive SummaryUpdated on Sep 18, 2024

Dell Unity XT and Lenovo ThinkSystem DE Series are two competing storage solutions. Dell Unity XT is preferred for its robust software capabilities, while Lenovo ThinkSystem DE Series is appreciated for its hardware reliability and scalable performance.

Features: Dell Unity XT users value its comprehensive data management features, strong integration with cloud services, and robust software functionalities. Lenovo ThinkSystem DE Series is praised for its high throughput, effective data protection mechanisms, and scalable performance.

Room for Improvement: Dell Unity XT users suggest improvements in hardware upgrade processes, need for faster support responses, and better hardware reliability. Lenovo ThinkSystem DE Series feedback indicates a demand for more intuitive monitoring tools, better documentation, and improved user guidance.

Ease of Deployment and Customer Service: Dell Unity XT is highlighted for its relatively straightforward deployment, but has mixed reviews regarding customer service efficiency. Lenovo ThinkSystem DE Series is recognized for quick and flexible deployment options, receiving positive feedback for responsive customer service.

Pricing and ROI: Dell Unity XT is perceived as costly, but users believe it offers good long-term ROI due to its comprehensive feature set. Lenovo ThinkSystem DE Series is favored for its competitive pricing and immediate performance benefits, delivering a quicker ROI.

To learn more, read our detailed Dell Unity XT vs. Lenovo ThinkSystem DE Series Report (Updated: February 2026).

Buyer's Guide

Dell Unity XT vs. Lenovo ThinkSystem DE Series

February 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

Pure FlashArray X NVMe

Mindshare comparison

As of March 2026, in the All-Flash Storage category, the mindshare of Pure FlashArray X NVMe is 1.6%, up from 0.8% compared to the previous year. The mindshare of Dell Unity XT is 5.9%, down from 8.2% compared to the previous year. The mindshare of Lenovo ThinkSystem DE Series is 1.8%, down from 2.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.

All-Flash Storage Market Share Distribution
Product	Market Share (%)
Dell Unity XT	5.9%
Pure FlashArray X NVMe	1.6%
Lenovo ThinkSystem DE Series	1.8%
Other	90.7%

All-Flash Storage

Featured Reviews

Jaehoon Oh

Chief Technology Officer at Lambda256

Supports efficient storage management through volume snapshots and offers reliable non-disruptive upgrades

I have no specific improvements to suggest for Pure FlashArray X NVMe at this time. The performance statistics could be enhanced. I can see the performance statistics in the Pure Storage console, but it does not show the performance by 4K byte unit. It displays IOPS and bandwidth, but IOPS is about real use, and I want to know how many IOPS are currently running in 4K byte units. I cannot see that IOPS because most storage systems report their performance by 4K byte unit. I want to see Pure Storage performance by 4K byte unit to compare with other storage or other internal NVMe SSD.

Read full review

Deepak Kannan

Sales Account Manager - BFSI Sector at Frontier Business systems

Customer needs are addressed effectively with collaborative sales and service support

Recently, customers have been asking for a cloud tiering option in storages. Some Dell storages do not have cloud tiering, which is an optional commercial feature. NetApp's FSA model 2750 comes with an inbuilt cloud tiering option. In the future, if Dell storages include this option, especially for Unity, it would help us target SME or medium enterprises for quicker closures and support the sales team.

Read full review

Giorgio Pozzi

System Administrator at PORTGUARDIAN.COM SRL

Performance and cost-effectiveness are maximized with seamless setup and significant ROI

I use Lenovo ThinkSystem DE Series to replace the old storage in our infrastructure. Additionally, I use it in customer infrastructures to migrate from the old storage to the new one On the M storage, I find the best features to be deduplication and compression. On the DE storage, the most…

Read full review

Quotes from Members

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

Pros

"I appreciate the performance."

"The high availability of the product is the most valuable feature."

"Technical support has been helpful and responsive."

"The most valuable features of this solution are its ease of use and performance."

"The best features of Pure FlashArray X NVMe include the volume snapshot capabilities, which allow us to save most of the storage space by volume snapshots periodically."

"The solution is very straightforward to set up."

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

"It's helped us because we've changed fundamentally what we talk about. We don't talk about storage and different tiers of storage anymore nor do we talk about servers. We talk now about applications and how applications impact the business and end users."

More Pure FlashArray X NVMe pros

"It is ease to use. It performs. It's easy to provision, and It's stable."

"We have resolved IT challenges with this solution. It sped up our environment. We went from spinning disk to all-flash, which reduced our footprint."

"Quick Snapshots and cloning are key features."

"The setup and installation procedures are easy."

"Provides good provisioning, allowing us to save space."

"My storage team likes Unity's replication features. Three-site replication is a unique feature that EMC offers us."

"We just started doing a bunch of automation where, if an end-user's home directory or departmental share gets filled, I can set certain things through a Unity API so that if it reaches 95 or 98 percent full, it will automatically expand. Now, instead of our getting a ticket and having to go in and do it manually, it does that for us."

"This solution makes it easy to manage storage, provision new workloads, and scale-up."

More Dell Unity XT pros

"Lenovo ThinkSystem DE Series is simple to use"

"ThinkSystem's storage performs well, and the price per gigabyte is good, especially on SSD solutions. It's also easy to use."

"Fewer features is not necessarily a negative as it leads to simpler operation and lower price."

"The solution is very easy to troubleshoot. It's one of the most valuable features. It also doesn't take long to deploy and normally it comes with a three-year warranty."

"Its initial setup process is easy."

"The most valuable features of the Lenovo ThinkSystem DE Series are the dual controllers, available installation documentation, and the option of multiple host bus adapter interfaces."

"The solution is very easy to set up."

"This solution is good for virtualization and meets the need for CPU and RAM requirements."

More Lenovo ThinkSystem DE Series pros

Cons

"We have run into a couple of instances recently where we are running out of space. So we have had to buy some more packs for it and they have deployed fine and it has increased smoothly."

"The software layer has to improve."

"There is room for improvement in catering to midrange storage needs, especially for customers seeking Enterprise-class features."

"I would like to see some AI features that would allow arrays to intelligently identify threats or unusual behavior in the data pattern and give an alert."

"You cannot tag a LUN with a description, and that should be improved. What I like on the Unity side is that when I expand LUNs or do things, there is an information field on the LUN. This is the Information field that you can tag on your LUNs to let yourself know, "Hey, I've added this much space on this date". Pure lacks that ability. So, you don't have a mechanism that's friendly for tracking your data expansions on the LUN and for adding any additional information. That's a downside for me."

"If the customer only needs 500 terabytes and doesn't care how much data they'll put in the server, IBM is cheaper than Pure."

"We've seen that when we create a POD in synchronous mode, it increases the latency."

"There are some challenges with data encryption and reduction."

More Pure FlashArray X NVMe cons

"Dell EMC Unity XT should present a path or a roadmap on how they could put their products on the cloud. This would have some value for their current customers."

"There is room for improvement in manufacturing."

"Licensing has been quite difficult. It doesn't always auto-license. About half the time, when I provision one, I have to contact Service to get a license, or even go to our account manager to help get it straightened out."

"Software updates have to be downloaded to the root of the device. This pushes the available space to 95% utilization."

"There are features still to come, like compression and deduplication on hybrid platforms, VDM improvements to be developed for NAS environments, and also improvements in the “self-migration” tools to push or pool information (to assist the migrations to and mostly from third-party arrays)."

"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."

"There are a lot of things that can be done with it. It's got Cloud IQ, but I think it's not as mature as it could be, they could make it more effective. They could make it more comparable to some of the other products out there that have cloud analytics. The amount of insight that the Unity product is able to give, at this point, is okay, but not class-leading. Some of the other data-reduction technologies, like deduplication, are not to the level of other competitors and what their products provide."

"It might be nice to have more integrated features instead of having everything as a separate module, like the networking. The networking is attached separately in the back. It would be nice if that was more integrated with less ports."

More Dell Unity XT cons

"Usually, when a part fails, we have to replace it and it takes a while. It would be better if the part could be available locally here in Kenya so we don't have to wait so long to repair the solution."

"The solution could be more scalable, although it suits our present needs."

"The type of connection that is used in Lenovo ThinkSystem DE Series should be improved."

"The product could support advanced software integrations."

"There could be a snapshot feature in the solution."

"Improvements can be made to the product's performance."

"In the next release, I would like to see more functionality. But, again, it is an entry-level product."

"It would be useful to have structured solutions replicated to other sites."

More Lenovo ThinkSystem DE Series cons

Pricing and Cost Advice

"The licensing is on a yearly basis."

"With Pure Storage, we would like to continue seeing price reductions with flash storage. I don't think we're any different than anybody else when we continue to look to the industry for price reductions of both NVMe and traditional SSD storage. We would like to see these prices continue to decline and erode, even displacing large spinning disks."

"We pay approximately $50,000 USD per year in licensing fees."

"The tool's pricing is cheap; I rate it a six to seven out of ten. Most of our sales are not subscription-based. We sell the hardware, and customers keep using it. They only renew the service part annually. The support can be a bit pricey, but the solution is more cost-effective than anything else out there."

"Pretty much everything that you need is licensed when you buy the product. Licensing to me is different than the maintenance cost, but they can bleed into one another. We buy the product, and we expect three years of support bundled into what we negotiate on our storage arrays. I would start to see maintenance costs going into the fourth year, but we're not there yet."

"Our licensing fees are $500,000+ USD."

"The tool is an investment that we've budgeted for. While the prices may be higher than those of other vendors, we see it as a market leader with benefits. We don't regret purchasing it."

"The support cost per array is about $20,000 a year for 24/7 support."

More Pure FlashArray X NVMe pricing and cost advice

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

"It is an average priced solution."

"The price is very reasonable."

"We checked both HP and Dell and we determined that Dell EMC was a better option."

"The solution’s pricing is competitive."

"The pricing of Dell Unity XT is good."

"Here is our major complaint with pricing. Dell EMC comes to us and gives us a price. We are like, "Well, this doesn't even compare to what we got on the last project." We say, "No, you should bring it down to this level." Then, they come back again and we are sort of in the middle again. I am like, You already sold us other stuff at a better price. We are not going to just say, 'Yes,' because we are out of time.""

"The price of the solution should be less expensive. However, at some point, you need to pay for facility and performance."

More Dell Unity XT pricing and cost advice

"It is an expensive solution."

"The pricing is fair and low compared to other products in this category."

"The solution's price could be better."

"We have a five-year contract for providing support."

"The price of the Lenovo ThinkSystem DE Series is a one-time purchase. There is a global price list available to find the price of the solution."

"All of the features are bundled together, and you can renew the bundle with all of the features included."

"The best thing about this solution is its price, which reduces our costs."

"The pricing for this solution is good compared to HP or Dell EMC."

More Lenovo ThinkSystem DE Series pricing and cost advice

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Top Industries

By visitors reading reviews

Computer Software Company

12%

Manufacturing Company

11%

Financial Services Firm

10%

Government

Computer Software Company

14%

Manufacturing Company

11%

Financial Services Firm

Comms Service Provider

Computer Software Company

16%

Comms Service Provider

10%

Manufacturing Company

University

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	15
Midsize Enterprise	11
Large Enterprise	12

By reviewers
Company Size	Count
Small Business	62
Midsize Enterprise	49
Large Enterprise	94

By reviewers
Company Size	Count
Small Business	10
Midsize Enterprise	3

Questions from the Community

What do you like most about Pure FlashArray X NVMe?

Pure FlashArray X NVMe helps to improve our processing speed. It is user-friendly and easy to use.

See all answers

What is your experience regarding pricing and costs for Pure FlashArray X NVMe?

The price of Pure FlashArray X NVMe is very expensive, though I do not know the actual price because I am using the E...

See all answers

What needs improvement with Pure FlashArray X NVMe?

I have no specific improvements to suggest for Pure FlashArray X NVMe at this time. The performance statistics could ...

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...

See all answers

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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What is your experience regarding pricing and costs for Lenovo ThinkSystem DE Series?

The price of Lenovo ThinkSystem DE Series is very good. We chose this type of storage for the performance and the price.

See all answers

What needs improvement with Lenovo ThinkSystem DE Series?

The type of connection that is used in Lenovo ThinkSystem DE Series should be improved.

See all answers

What is your primary use case for Lenovo ThinkSystem DE Series?

I use Lenovo ThinkSystem DE Series to replace the old storage in our infrastructure. Additionally, I use it in custom...

See all answers

Comparisons

Dell PowerStore vs Pure FlashArray X NVMe

Compared 14% of the time

Dell PowerMax vs Pure FlashArray X NVMe

Compared 11% of the time

HPE Alletra Storage vs Pure FlashArray X NVMe

Compared 10% of the time

TrueNAS R-Series vs Pure FlashArray X NVMe

Compared 8% of the time

IBM FlashSystem vs Pure FlashArray X NVMe

Compared 4% of the time

More Pure FlashArray X NVMe Competitors

Dell PowerStore vs Dell Unity XT

Compared 33% of the time

NetApp AFF vs Dell Unity XT

Compared 12% of the time

Pure Storage FlashArray vs Dell Unity XT

Compared 9% of the time

Hitachi Virtual Storage Platform vs Dell Unity XT

Compared 5% of the time

Lenovo ThinkSystem DM Series vs Dell Unity XT

Compared 2% of the time

More Dell Unity XT Competitors

Dell PowerStore vs Lenovo ThinkSystem DE Series

Compared 20% of the time

IBM FlashSystem vs Lenovo ThinkSystem DE Series

Compared 10% of the time

Lenovo ThinkSystem DM Series vs Lenovo ThinkSystem DE Series

Compared 8% of the time

NetApp AFF vs Lenovo ThinkSystem DE Series

Compared 8% of the time

Huawei OceanStor Dorado vs Lenovo ThinkSystem DE Series

Compared 5% of the time

More Lenovo ThinkSystem DE Series Competitors

Product Reports

Buyer's Guide

Pure FlashArray X NVMe

February 2026

Download Pure FlashArray X NVMe product report

Buyer's Guide

Dell Unity XT

February 2026

Download Dell Unity XT product report

Buyer's Guide

All-Flash Storage

February 2026

Download Lenovo ThinkSystem DE Series product report

Also Known As

Pure FlashArray//X NVMe, Pure FlashArray//X, FlashArray//X

EMC Unity, Dell EMC Unity

ThinkSystem DE Series

Overview

Pure Storage FlashArray//X is the world’s first enterprise-class, all-NVMe flash storage array. It represents a new class of storage – shared accelerated storage, which is a term coined by Gartner – that delivers major breakthroughs in performance, simplicity, and consolidation.

Pure Storage

Dell EMC Unity XT is one of the best all-flash storage arrays on the market today. Dell EMC Unity XT arrays are designed for performance, optimized for efficiency, and built for a multi-cloud world. In addition, they support digital transformation, enabling businesses to reach the full potential of their data capital quickly and easily. Dell EMC Unity’s All-Flash and Hybrid Flash storage platforms provide the performance, efficiency, enterprise-class software, and virtualization integrations required for running a wide range of virtualized applications.

Dell EMC Unity XT Features

Dell EMC Unity XT has many valuable key features, including:

Unified storage flexibility: With Dell EMC Unity XT you can consolidate separate storage platforms into a single Unity XT unified storage system via a simple and intuitive (HTML5) management GUI that also connects you to CloudIQ.
All-inclusive data protection: Dell EMC Unity XT offers a reliable way to protect application data with all-inclusive data protection services, including snapshots, data-at-rest drive encryption, replication, thin clones, and dynamic pools.
Software-defined solutions: Dell EMC Unity XT provides software-defined storage and HA for on-prem and in the cloud solutions.
Multi-cloud alignment: With Dell EMC Unity XT you have the ability to build and manage an effective data-first multi-cloud strategy. It allows you to consolidate public and private cloud resources that align with your business goals.
Metro node: This feature enables automated business continuity with zero RPO and RTO. It also provides greater flexibility through multi-platform support and replication to any array and has zero performance impact on the storage array.
Scalable file system: Dell EMC Unity XT is built with a robust 256TBu file system. The UFS64 file system includes up to 256 independent VMDK clones, 16 thin clones, space efficient snapshots with a simple space reclaim and low IO impact, file system shrink that can reclaim free blocks, simplified Quotas for User, and much more.
DevOps integrations: Dell EMC Unity XT supports the Container Storage Interface (CSI) plugin to run Kubernetes workloads.

Dell EMC Unity XT Benefits

Some of the benefits of using Dell EMC Unity XT include:

High-speed data access
Low latency
Dual-active controller architecture
Multi-cloud
Intuitive user interface
Cost efficient
Solid performance

Reviews from Real Users

Below are some reviews and helpful feedback written by Dell EMC Unity XT users.

A Systems Engineering Manager at a manufacturing company says, "It is definitely one of the most robust, solid, well-performing products that I have dealt with. It is set it and forget it, which is pretty amazing." He also mentions, “We can do both block and file storage on one unit without purchasing a separate device.”

Peter S., Senior Technical Specialist at a healthcare company, states, “The most valuable feature is reliability. At the end of the day, it just runs. This solution is easy to work with and easy to maintain.”

PeerSpot user Melvin T., Senior Systems Engineer at Prosperity Bank, explains that the solution is “easy to use and we can add LUNs or space without interruption to end-users. We're able to access it from just about anywhere, as long as we have access to a browser. That feature is really neat because sometimes we will go to a different data center or a different site, and if we need to access it to see a LUN or to see any type of storage, we can do that. That's one of the big takeaways with Unity."

Dell Technologies

The DE All-Flash Series delivers the performance of more than 2,000 15k rpm HDDs, yet requires only 2% of the rack space, power, and cooling. Because it consumes 98% less space and power, DE Series can significantly improve the overall efficiency of your IT operations while continuing to meet your performance requirements.

Lenovo

Sample Customers

Fremont Bank, Judson ISD, The Nielsen Company

Draper, Rio Grande Pacific, Royal Victoria Regional Health Centre

Information Not Available

Buyer's Guide

Dell Unity XT vs. Lenovo ThinkSystem DE Series

February 2026

Free Report: Dell Unity XT vs. Lenovo ThinkSystem DE Series

Find out what your peers are saying about Dell Unity XT vs. Lenovo ThinkSystem DE Series and other solutions. Updated: February 2026.

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