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 #4 with an average rating of 8.2, while IBM is ranked #16 with an average rating of 8.7. Dell Technologies holds a 7.3% mindshare in AFS, compared to IBM’s 0.5% 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: April 2025).

Buyer's Guide

Dell Unity XT vs. IBM FlashSystem 9100 NVMe

April 2025

Download the complete report

Helped 850,043 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 May 2025, in the All-Flash Storage category, the mindshare of Pure FlashArray X NVMe is 0.8%, down from 0.8% compared to the previous year. The mindshare of Dell Unity XT is 7.3%, down from 10.2% compared to the previous year. The mindshare of IBM FlashSystem 9100 NVMe is 0.5%, down from 0.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.

All-Flash Storage

Featured Reviews

Eugene Hemphill

Sales Manager at Multicomputos PR

Helps to save money and resources with the data compression feature

One point I'd like to improve is that the tool should start selling small boxes again. It discontinued some products and is focusing on bigger, more capable boxes, neglecting the SMB market. Even though it's not a big market, it shouldn't have removed them. One way to improve the product is to add an operational assistant that doesn't depend on VMware. It could also establish more alliances with other operational systems.

Read full review

Syed Habib

Head of Infrastructure Security (S.A.V.P) at EXIM Bank Ltd

Efficient data replication and fast IOPS have improved operational performance

Dell and a partner jointly implemented this solution in Auvink. We installed the Flash, which makes our IO operations fast and efficient. Replication is available, allowing us to replicate data simultaneously from one site to another. All-flash technology and vTXT enhance speed, and the IOPS are faster. The cache's IOPS are much better. Snapshots provide a unique feature for testing and make management more comfortable and easy. The platform is multi-supported and certification is more convenient and easy to manage.

Read full review

Mohamed-Hassan

Microfinance at a consultancy with 11-50 employees

Steady performance, responsive support, and high availability

If we add a shell, the scalability depends on a legacy protocol and not the IBM FlashSystem 9100 NVMe which is a setback. At the previous bank, I worked at we had approximately 9,000 users. We are using the solution at its full capacity. I rate the scalability of IBM FlashSystem 9100 NVMe a seven out of ten.

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

"It is very easy to install and configure. It has got excellent diagnostics. If you really need to see how the box is performing, the console gives you a lot of information. You can set thresholds as well as alerts based on the thresholds, which is a very powerful functionality. They are very proactive. They know how to monitor and manage the systems. They see a problem, and they are all over it before us. They see the problem before we see it, which is very good."

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

"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."

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

"Everything, especially the VMs inside, is pretty fast."

"Technical support has been helpful and responsive."

"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."

"It has benefited my organization because it has reduced time to insights."

More Pure FlashArray X NVMe pros

"The compression and deduplication that will be coming in version 4.3. With just those features, you're reducing the amount of data and the footprint on the hardware."

"Dell excels in service and support."

"The most valuable features are its performance and simplicity."

"It has improved the utilization of our own internal resources and performance across our managed service platform, meeting our customers SLAs."

"Setup is simple."

"Its quick integration with VMware. The ability to stand up a data store in one place, where you don't have to go and rescan for the data store through the vCenter Client, as well as SMB shares. This ended up being a big selling point for us."

"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."

"We can put all the virtualized servers in one place, so our customers can share and manage the devices very easily."

More Dell Unity XT pros

"The most valuable feature of the solution is its upgrades, as we don't have to do much homework because of its different controllers."

"It's easy to use, has good stability, and many features."

"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."

"The high performance and high availability improved our overall processes."

"It is a very stable product. Stability-wise, I rate the solution a ten out of ten because we did not face any issues in the last three years."

"A key feature is that compared to storage systems that we've been familiar with over decades, IBM simply does not fail. The reason is that IBM is the only manufacturer that engineers its own flash module, and there is a key architectural difference from everything else that we have seen in the market. The difference is that the flash module has the computational capability, which allows reliability and capacity enhancements to be uploaded from the main controllers and run in each module. So, each of the flash drives becomes its own little storage system, and that is extremely effective architecture. In this field, with this type of system, IBM has made a statement. They've never had one of these modules cause an outage. So, the failure rates on these things are just in a whole different universe from what we were accustomed to."

"There are many valuable features of IBM FlashSystem 9100 NVMele I have found to meet my needs. Specifically, the maintenance cycle is a standout feature of this solution. The main component of the IBM FlashSystem 9100 NVMe is the maintenance of the batteries, which have a predetermined and reliable four-year life cycle. This is in stark contrast to other solutions that may use spinning disks, which can fail unexpectedly, causing unwanted downtime and maintenance. Having a predictable maintenance cycle is a significant advantage and has made this solution a preferred choice for me."

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

More IBM FlashSystem 9100 NVMe pros

Cons

"We would like to see more visibility into garbage collection and CPU performance in the GUI."

"The software layer has to improve."

"The tool's portfolio is minimal. It is expensive."

"In terms of what needs improvement, the dashboard and management could be simplified."

"I'd like to see the product implement active replication for vehicles such as VMware."

"It is on the expensive side."

"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."

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

More Pure FlashArray X NVMe cons

"I called about an issue where I couldn't get VVOLs registered. It turns out it is a bug in the code and that there is no information about when it will be fixed. It's just not going to work. I was a little miffed about that."

"Dell Unity XT could add a unit-to-unit replication. We haven't seen that because we don't have an additional one to test. However, it is not an improvement, but something that we would like to have visibility on how it's done or how it works."

"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."

"They should update to the cloud."

"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."

"We would like to see more advanced integration capability added to this solution."

"It needs deduplication. We'd like to have the dedupe capabilities in the Unity."

"For the integration of the VPLEX function for Cross IDC structure, they should integrate the function into the SP controller."

More Dell Unity XT cons

"IBM's support is not good. I experienced a big problem where I opened the console IBM Storage and would see that something was broken. I called the call centers, and I said, "I have a problem. My drive is not working." They want me to give them the serial number, I gave it to them and they told me "I cannot find your product. Your product is not here.""

"Deduplication and compression should be improved."

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

"The support could be better."

"The solution's compression needs to be improved, as it's not the best."

"In the FlashSystem 5200, there were only four ports of 32 fiber channels for the architecture. This has been resolved in the new generation."

"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."

"The ZIO interface could be improved."

More IBM FlashSystem 9100 NVMe cons

Pricing and Cost Advice

"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."

"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."

"With VMware, we pay $300,000 annually."

"The licensing is on a yearly basis."

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

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

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

"The product is expensive."

More Pure FlashArray X NVMe pricing and cost advice

"There is an annual charge for the license of this product. It has better pricing than its competitor: Pure Storage."

"We bought extended warranties out of the box because our customer has a bad habit of managing warranties."

"The pricing is competitive. We miss some of the feature functionality that we had with the XtremeIOs but it's certainly suitable for the purpose."

"The price is good for commercial grade storage arrays."

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

"The price of Dell Unity XT is reasonable. However, if you are buying a custom solution, it can come at a considerable price."

"As far as licensing goes, I love how VMware works with Dell EMC Unity. It's great. They work hand in hand. They have made it so simple."

"The flexibility is important. We still have a lot of customers that have a use case for non-flash, yet you can also build the flash version as well."

More Dell Unity XT pricing and cost advice

"The solution is priced well."

"The solution's price is competitive."

"Compared to its competitors, IBM's offering is the most cost-effective."

"There are pricing options from the mid-rand to the high-range, of which the suitability depends upon the requirements."

"Compared to other solutions, the cost of IBM FlashSystem 9100 NVMe is reasonable, with a one-time payment of around $70,000. However, additional support is available for $25,000 for three years. The overall maintenance cost is steep."

"On a scale of one to ten, where one is a low price and ten is a high price, I rate the pricing an eight."

"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 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."

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

850,043 professionals have used our research since 2012.

Top Industries

By visitors reading reviews

Computer Software Company

15%

Financial Services Firm

11%

Manufacturing Company

11%

Government

Educational Organization

66%

Computer Software Company

Manufacturing Company

Government

Computer Software Company

21%

Financial Services Firm

11%

Manufacturing Company

10%

Government

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

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?

I am an engineer and am not aware of the setup cost.

See all answers

What needs improvement with Pure FlashArray X NVMe?

Adding some functions to the product would be beneficial. Storage replication should be essential, and the analytics ...

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 30% of the time

TrueNAS R-Series vs Pure FlashArray X NVMe

Compared 17% of the time

Pure Storage FlashBlade vs Pure FlashArray X NVMe

Compared 15% of the time

IBM FlashSystem vs Pure FlashArray X NVMe

Compared 11% of the time

Dell PowerMax NVMe vs Pure FlashArray X NVMe

Compared 6% of the time

More Pure FlashArray X NVMe Competitors

Dell PowerStore vs Dell Unity XT

Compared 38% of the time

NetApp AFF vs Dell Unity XT

Compared 12% of the time

HPE Nimble Storage vs Dell Unity XT

Compared 5% of the time

Pure Storage FlashArray vs Dell Unity XT

Compared 5% of the time

HPE Alletra Storage vs Dell Unity XT

Compared 5% of the time

More Dell Unity XT Competitors

Hitachi Virtual Storage Platform vs IBM FlashSystem 9100 NVMe

Compared 31% of the time

Dell PowerStore vs IBM FlashSystem 9100 NVMe

Compared 26% of the time

Dell PowerMax NVMe vs IBM FlashSystem 9100 NVMe

Compared 16% of the time

HPE Alletra Storage vs IBM FlashSystem 9100 NVMe

Compared 14% of the time

Pure Storage FlashArray 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

April 2025

Download Pure FlashArray X NVMe product report

Buyer's Guide

Dell Unity XT

May 2025

Download Dell Unity XT product report

Buyer's Guide

IBM FlashSystem 9100 NVMe

April 2025

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

April 2025

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: April 2025.

DOWNLOAD NOW

850,043 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.