Dell Unity XT vs IBM FlashSystem 9100 NVMe comparison

Dell Technologies and IBM are both solutions in the All-Flash Storage category. Dell Technologies is ranked #5 with an average rating of 8.6, while IBM is ranked #27 with an average rating of 8.3. Dell Technologies holds a 5.7% mindshare in AFS, compared to IBM’s 0.6% mindshare. Additionally, 96% of Dell Technologies users are willing to recommend the solution, compared to 95% of IBM users who would recommend it.

Comparison Buyer's Guide

Download the report

Executive SummaryUpdated on Sep 18, 2024

Dell Unity XT and IBM FlashSystem 9100 NVMe compete in the enterprise storage solutions category. Dell Unity XT offers affordability, while IBM FlashSystem 9100 NVMe stands out with advanced performance features, justifying its higher cost.

Features: Dell Unity XT is recognized for scalability, flexible configuration options, and effective performance. IBM FlashSystem 9100 NVMe impresses with high-speed performance, integrated data reduction technologies, and exceptional reliability. While both offer robust features, IBM's high-speed capabilities stand out.

Room for Improvement: Dell Unity XT could benefit from enhanced deduplication, improved compression efficiency, and more advanced storage efficiency technology. IBM FlashSystem 9100 NVMe users recommend an easier upgrade process, better support for modern data formats, and a simplified management interface. Dell focuses on storage efficiency, and IBM emphasizes upgrade simplicity.

Ease of Deployment and Customer Service: Dell Unity XT is praised for a straightforward deployment process and highly responsive customer support. IBM FlashSystem 9100 NVMe users find deployment manageable but have mixed experiences with support. Dell edges ahead in ease of deployment and customer experience.

Pricing and ROI: Dell Unity XT is favored for cost-effectiveness, offering good ROI for budget-conscious businesses. IBM FlashSystem 9100 NVMe, while more expensive, delivers superior ROI through advanced capabilities and performance enhancements. Users find the investment in IBM justified by its returns.

To learn more, read our detailed Dell Unity XT vs. IBM FlashSystem 9100 NVMe Report (Updated: February 2026).

Buyer's Guide

Dell Unity XT vs. IBM FlashSystem 9100 NVMe

February 2026

Download the complete report

Helped 881,757 peers since 2012

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 February 2026, in the All-Flash Storage category, the mindshare of Pure FlashArray X NVMe is 1.5%, up from 0.7% compared to the previous year. The mindshare of Dell Unity XT is 5.7%, down from 8.7% compared to the previous year. The mindshare of IBM FlashSystem 9100 NVMe is 0.6%, up from 0.5% 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	5.7%
Pure FlashArray X NVMe	1.5%
IBM FlashSystem 9100 NVMe	0.6%
Other	92.2%

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

MohammedIsmail

Datacenter Manager at Tracker Connect

Enhanced storage performance and an easy setup with compression challenges

We use IBM FlashSystem 9100 NVMe as a storage device in the IT industry The features I find most valuable include its use for storage and performance. The solution's compression needs to be improved, as it's not the best. Furthermore, support from the partner could also be improved as it's been…

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

"Overall stability is very good. It is a very stable solution."

"It has good, reliable, fast storage."

"The most valuable feature of this solution is its ease of use."

"We're able to get higher-density workloads on the same infrastructure, and we have a smaller physical footprint. The performance is excellent – during our test the bottlenecks are never on the X array, it just keeps picking up the pace to match what you need. The real-time visibility is a differentiator in my opinion."

"The initial setup was extremely simple and straightforward."

"The solution is very straightforward to set up."

"Pure FlashArray X NVMe has low latency and high Ops. It is an evergreen model."

"The tool's valuable features are speed, security, data compression, and reliability. Its data compression feature is the best that we have ever seen. It helps us to save money and resources."

More Pure FlashArray X NVMe pros

"It is easy to manage. A lot of the system manages itself."

"Stable flash storage platform with good scalability, efficiency, and speed."

"Dell EMC Unity XT has good integration with VMware."

"The most valuable feature is that the solution is a hybrid system, so you can do both block and file storage."

"They have a Unity REST API that I use to automate some of the storage stuff. I'm just getting started with it, but it seems pretty easy to use."

"It is completely reliable. The plugins for it are quite mature. I don't really have any issues with the interactions with vSphere, they all work as intended."

"It gives me the flexibility with its ability to replicate to itself and the ability to use the Dell EMC Cloud as an option. That's always sitting there and waiting if we need it."

"The complete block and file sharing are the most usable features."

More Dell Unity XT pros

"What I like about the product are its high availability, maximum efficiency in performance, and its ability to handle a high level of I/O operations."

"The features I find most valuable include its use for storage and performance."

"The FlashCore modules support more value to the architecture due to their unique characteristics."

"IBM FlashSystem 9100 NVMe is one of the leading storage systems in the world...I rate the solution's stability a ten out of ten."

"Good performance with a user-friendly UI."

"The most valuable features of IBM FlashSystem 9100 NVMe are its steady performance and usefulness in high-traffic environments."

"The solution is more available for IOPS warehousing, resolving issues, and reporting than other products."

"The storage serves the virtual environment. Most of our applications run in the virtual environment, and it serves nearly 30% of the bank's capacity."

More IBM FlashSystem 9100 NVMe pros

Cons

"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."

"Adding some functions to the product would be beneficial. Storage replication should be essential, and the analytics should not incur extra charges."

"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."

"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."

"We need better data deduplication."

"Right now, the box itself is just strictly working as a backend storage system. It would be fantastic if we could access it directly like a NAS device through network access or SIS drives. I think they have an interface, but I am not sure how good it is. If we could address a box directly on the network without having to go through a server, it would be great. The replication schemas could be improved. We are not using replication on the storage level right now. We use a different type of replication. If their replication would be as good as the one that we have, I would probably run the replication schema because it might be faster, but I don't know that for a fact. So, I cannot say that they have good replication. All I can say is that they need to inform us better."

"It's more multi-tenant functionality in their Pure1 manage portal that is lacking."

"In the next release, I would like to see real-time analytics for further insight into consumption models."

More Pure FlashArray X NVMe cons

"This product has some scalability issues. Before you can get support, you have to look for the service tag number on your product which could make it difficult to access support."

"The solution can use improvement with the patch cluster like the Synchron and Active replication."

"We've got massive issues at the moment with IBM AIX. It's not stable. We have a lot of disk errors, production crashes sometimes."

"I haven't seen the roadmap for this solution."

"I think Dell EMC should be more careful in appointing partners, and they need to have better control over their partners. And if their partner has some problems with them, we should not suffer."

"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."

"The iSCSI and the VMware integation using vSphere could be less confusing."

"This solution would be improved with the addition of flexible raid volumes."

More Dell Unity XT cons

"The efficacy of the GUI in IBM FlashSystem 9100 NVMe could be enhanced, and it would be beneficial to include a feature that can prevent ransomware attacks."

"IBM FlashSystem 9100 NVMe is currently at the end of its lifespan and will soon become obsolete in the markets."

"In the future, the limitation is upgrading the same storage by adding a shelf to the desk. There is a limitation in the backend connection between the storage and extended shelf."

"I'd like to be able to connect to tape drives behind the storage device to back up the tape if need be. We have all of our storage running in all-flash, and we make a copy on tape. Currently, when we want to hook up tape drives, we have to add some extra equipment, which is a little bit complex. We want IBM to add a feature where we could install a tape into the storage so that we can connect it through a single pane of glass. We'd like to have a feature in the IBM flash storage system so that we can connect backup tape drives through the IBM storage system and we can manage the backup tape from the storage system."

"The support could be better."

"IBM FlashSystem 9100 NVMe is an expensive solution, and its pricing could be improved."

"The tool's architecture is complex. It also needs to add data utilization reports."

"The pricing should be more competitive."

More IBM FlashSystem 9100 NVMe cons

Pricing and Cost Advice

"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."

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

"Its price could be better. It is not too expensive, but it is the high-end cost. It is kind of a Rolls-Royce. You pay a lot, but you get a lot out of it. So, the price pressure on the way down would be great, but at the end of the day, if you need to do the work, you just pay for it."

"They can tout the functionality and cutting edge technology that they have, but that's where the price tag comes in. The cost is high, but I think as they grow their business and get more customers that it will probably go down a little bit."

"The licensing is on a yearly basis."

"As far as the licensing costs, everything is included in the license."

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

"Given its price, Pure is not the first option."

More Pure FlashArray X NVMe pricing and cost advice

"It was easy to order. We are a big Dell shop, so it was easy to purchase and get it in place, then up and running."

"The price in our country is very expensive and some of our customers opt for lower-cost alternatives."

"Licensing is easy since all the software is included."

"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 the performance combined with the gig-per-dollar value. That combination is superior to other storage options."

"The pricing was quite okay compared to others. We probably got it cheaper because we were the first ones out of the gate, but I would say that it's good value for the money."

"There is not a license required for the use of the solution. We purchased a maintenance contract."

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

More Dell Unity XT pricing and cost advice

"The solution is priced well."

"The solution's price is competitive."

"The price of IBM FlashSystem 9100 NVMe is less than Dell. For upgrades, the Dell solutions are more expensive."

"Price-wise, the solution offers excellent pricing to its users. In short, the prices offered by the solution are competitive compared to similar solutions."

"The price of the FlashSystem 9100 NVMe is reasonable."

"It's a lot less costly than cloud storage. People get surprised by the cost of cloud storage, which is extremely expensive and four or five times the cost of storage on-premises. People don't realize what they're spending on storage until they start getting bills from Amazon, Microsoft, and others. This is a good way to reduce your cloud storage expenses."

"The price of IBM FlashSystem 9100 NVMele can be considered affordable when taking into account the operating system that is required for it to function properly. This operating system, which is licensed by IBM, may carry a higher cost, but it is worth the investment for larger corporate entities, such as insurance companies, Fortune Five companies, and banks, who make up a significant portion of their target market. The FlashSystems are designed for larger corporations and multinational enterprises, and may not be the most cost-effective solution for smaller businesses."

"The product has an average cost."

More IBM FlashSystem 9100 NVMe pricing and cost advice

See which vendors are best for you

Use our free recommendation engine to learn which All-Flash Storage solutions are best for your needs.

See recommendations

881,757 professionals have used our research since 2012.

Top Industries

By visitors reading reviews

Computer Software Company

12%

Manufacturing Company

11%

Financial Services Firm

11%

Government

Computer Software Company

14%

Manufacturing Company

11%

Financial Services Firm

Government

Marketing Services Firm

11%

Government

Computer Software Company

Recreational Facilities/Services Company

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	8
Midsize Enterprise	8
Large Enterprise	5

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...

See all answers

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...

See all answers

What do you like most about IBM FlashSystem 9100 NVMe?

The storage serves the virtual environment. Most of our applications run in the virtual environment, and it serves ne...

See all answers

What is your experience regarding pricing and costs for IBM FlashSystem 9100 NVMe?

The tool is expensive, though I do not know the specific licensing costs.

See all answers

What needs improvement with IBM FlashSystem 9100 NVMe?

The solution's compression needs to be improved, as it's not the best. Furthermore, support from the partner could al...

See all answers

Comparisons

Dell PowerStore vs Pure FlashArray X NVMe

Compared 16% of the time

Dell PowerMax vs Pure FlashArray X NVMe

Compared 12% 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 9% of the time

Hitachi Virtual Storage Platform vs Pure FlashArray X NVMe

Compared 5% of the time

More Pure FlashArray X NVMe Competitors

Dell PowerStore vs Dell Unity XT

Compared 34% of the time

NetApp AFF vs Dell Unity XT

Compared 11% of the time

Pure Storage FlashArray vs Dell Unity XT

Compared 9% of the time

HPE Alletra Storage vs Dell Unity XT

Compared 5% of the time

More Dell Unity XT Competitors

Dell PowerMax vs IBM FlashSystem 9100 NVMe

Compared 24% of the time

Hitachi Virtual Storage Platform vs IBM FlashSystem 9100 NVMe

Compared 17% of the time

HPE Alletra Storage vs IBM FlashSystem 9100 NVMe

Compared 15% of the time

Dell PowerStore vs IBM FlashSystem 9100 NVMe

Compared 14% of the time

Hitachi VSP E Series vs IBM FlashSystem 9100 NVMe

Compared 12% of the time

More IBM FlashSystem 9100 NVMe Competitors

Product Reports

Buyer's Guide

Pure FlashArray X NVMe

January 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

IBM FlashSystem 9100 NVMe

January 2026

Download IBM FlashSystem 9100 NVMe product report

Also Known As

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

EMC Unity, Dell EMC Unity

IBM FlashSystem 9100, FlashSystem 9100

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

IBM FlashSystem 9100 combines the performance of flash and Non-Volatile Memory Express (NVMe) end-to-end with the reliability and innovation of IBM FlashCore technology and the rich features of IBM Spectrum Virtualize - all in a powerful 2U enterprise-class storage system. Providing intensive data driven multicloud storage capacity, FlashSystem 9100 is deeply integrated with the software defined capabilities of IBM Spectrum Storage allowing you to easily add in the multicloud solutions that best support your business.

IBM

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. IBM FlashSystem 9100 NVMe

February 2026

Free Report: Dell Unity XT vs. IBM FlashSystem 9100 NVMe

Find out what your peers are saying about Dell Unity XT vs. IBM FlashSystem 9100 NVMe and other solutions. Updated: February 2026.

DOWNLOAD NOW

881,757 professionals have used our research since 2012.

See our Dell Unity XT vs. IBM FlashSystem 9100 NVMe report.

See our list of best All-Flash Storage vendors.

We monitor all All-Flash Storage reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.