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 7.8% 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

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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

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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 April 2025, in the All-Flash Storage category, the mindshare of Pure FlashArray X NVMe is 0.8%, down from 0.9% compared to the previous year. The mindshare of Dell Unity XT is 7.8%, down from 10.1% compared to the previous year. The mindshare of IBM FlashSystem 9100 NVMe is 0.5%, up 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.

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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.

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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

"I use the tool for Oracle databases, Oracle virtual machines, and Oracle Linux databases. I'm on the storage side, not a database administrator."

"The system allows for seamless learning experiences, facilitating quick and easy cloning of environments within minutes."

"The solution is scalable."

"The Pure1 component is most valuable at this point in time when comparing it with EMC. Pure1 is where you can have your diagnostics in the cloud, so you can look at things from your mobile phone."

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

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

"The database workloads are pretty fast because I frequently move data from here to there."

"One of the best features is the support, which is excellent."

More Pure FlashArray X NVMe pros

"Their support cases are all handed through the portal. The support contacts me when they need to do upgrades. It has been great. It's all very well-handled, scheduled, and performed."

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

"Initial setup is a simple process."

"All-flash performance, Snapshotting capabilities and replication are all valuable features."

"The feature that I have found most valuable is the unified storage. Also, its capabilities for block-access, file access, and the center box."

"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."

"The NAS capability is mainly what we're looking for from this product, and being able to recover fast in DR."

"The most valuable feature is the dynamic cache of this product. It is very important. We have the physical cache and we can boost this cache using disks. All the products are mainly flash now and this is one of the main characteristics which our customers like."

More Dell Unity XT pros

"It is a very stable solution."

"Its ease of use, performance, and hardware compression is very useful feature."

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

"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."

"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."

"The most valuable feature of IBM FlashSystem 9100 NVMe is the snapshot. We use it daily for all of the storage units."

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

"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."

More IBM FlashSystem 9100 NVMe pros

Cons

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

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

"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 would like to see VNC integration or be able to use Pure Storage with VNC."

"Managing data isn't difficult for me. The performance is usually perfect, but we sometimes have capacity problems."

"Efficiency improvements would always be welcome, but I'm not sure if they could get more efficient."

"Our use cases require more multi-tenant capabilities and additional VLAN interfaces for separating different customers. We currently use it to provide storage, sometimes shared storage, to different customers, but it is less flexible in comparison to a dedicated solution."

"The software layer has to improve."

More Pure FlashArray X NVMe cons

"Last (and I understand that it has a low chance of being implemented) the copy services currently are redirect on write. It would be great if the administrator could choose between redirect on write and copy on write, when configuring copy job."

"We have had some downtime. Nothing is perfect. Unity’s have had some code-release problems, versions that, from a compatibility perspective, had some glitches which caused an outage. But, given the amount of Unity’s we run, that has been fairly minor and it hasn't happened at scale or across all of our Unity’s."

"It is expensive, and the pricing could be better."

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

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

"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."

"Problems with I/O modules, with bugs that came out that really should have been caught before the product was released."

"I'd like to see more of the NVMe back-end for the flash. And the big deal with the PowerMax is that they've used all U2 drives so that they can avoid having to take it down. I see using M.2 and modular sections as being a real nice alternative that could be implemented in Unity at a fairly low cost."

More Dell Unity XT cons

"The storage system itself should have built-in capabilities for different ransomware attacks."

"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."

"The support could be better."

"Deduplication and compression should be improved."

"There is a tool provided by IBM for repairing batteries which can only be utilized by those who have an IBM technical advisor under service contract. However, for individuals who do not have such a contract, the tool can be difficult to use and requires a zip file copy. I believe that it would be greatly beneficial if the tool were made more user-friendly and accessible for all individuals who need to repair batteries."

"Other vendors have included a block and file system. IBM doesn't include a file system. And yet, it's very necessary for all organizations' networks to have file systems. We have other systems for the file system, however, ideally, we would like to have one system with these features."

"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."

More IBM FlashSystem 9100 NVMe cons

Pricing and Cost Advice

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

"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."

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

"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."

"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."

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

"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."

"The product is expensive."

More Pure FlashArray X NVMe pricing and cost advice

"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.""

"Pricing for this product is manageable, though slightly higher than comparable products."

"The solution is very expensive."

"When you look at what Dell EMC is compared to, like NetApp, they're all priced pretty similarly. I think the pricing of the hybrid model is good."

"There is no capacity license for XT and no additional costs for expansions. I would rate its pricing as four out of five."

"The pricing is reasonable. We're using the Flex on Demand pricing. It's really good for us when we pay for what we use. It made it easy to get it inside since it's an OpEx and instead of CapEx expense."

"Compared to other EMC platforms, Unity is nice because it is all-inclusive, in terms of the licensing model. That's unique for them, compared to other manufacturers. It is beneficial. We could use replication, native, right out-of-the-box."

"Currently, we buy directly from Dell EMC. We've tried going through resellers before, but we've found that if we go directly through Dell EMC, we get a good a price from being with the government."

More Dell Unity XT pricing and cost advice

"The solution is priced well."

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

"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."

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

"The product has an average cost."

"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 tool's pricing is competitive."

"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."

More IBM FlashSystem 9100 NVMe pricing and cost advice

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Top Industries

By visitors reading reviews

Computer Software Company

15%

Financial Services Firm

11%

Manufacturing Company

11%

Government

Educational Organization

69%

Computer Software Company

Manufacturing Company

Government

Computer Software Company

21%

Financial Services Firm

10%

Manufacturing Company

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...

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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 32% 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 14% of the time

IBM FlashSystem vs Pure FlashArray X NVMe

Compared 11% of the time

HPE Alletra Storage vs Pure FlashArray X NVMe

Compared 7% of the time

More Pure FlashArray X NVMe Competitors

Dell PowerStore vs Dell Unity XT

Compared 39% of the time

NetApp AFF vs Dell Unity XT

Compared 11% 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

Dell PowerStore vs IBM FlashSystem 9100 NVMe

Compared 36% of the time

Hitachi Virtual Storage Platform vs IBM FlashSystem 9100 NVMe

Compared 31% of the time

Dell PowerMax NVMe vs IBM FlashSystem 9100 NVMe

Compared 18% of the time

HPE Alletra Storage vs IBM FlashSystem 9100 NVMe

Compared 15% of the time

More IBM FlashSystem 9100 NVMe Competitors

Product Reports

Buyer's Guide

Pure FlashArray X NVMe

March 2025

Download Pure FlashArray X NVMe product report

Buyer's Guide

Dell Unity XT

April 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.

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