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Dell Unity XT vs IBM FlashSystem 9100 NVMe comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Sep 18, 2024

Review summaries and opinions

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

Categories and Ranking

Everpure FlashArray
Sponsored
Ranking in All-Flash Storage
3rd
Average Rating
9.0
Reviews Sentiment
7.2
Number of Reviews
231
Ranking in other categories
No ranking in other categories
Dell Unity XT
Ranking in All-Flash Storage
6th
Average Rating
8.4
Reviews Sentiment
6.5
Number of Reviews
198
Ranking in other categories
No ranking in other categories
IBM FlashSystem 9100 NVMe
Ranking in All-Flash Storage
26th
Average Rating
8.6
Reviews Sentiment
7.5
Number of Reviews
22
Ranking in other categories
NVMe All-Flash Storage Arrays (11th)
 

Mindshare comparison

As of August 2026, in the All-Flash Storage category, the mindshare of Everpure FlashArray is 6.9%, up from 6.6% compared to the previous year. The mindshare of Dell Unity XT is 6.4%, down from 6.5% compared to the previous year. The mindshare of IBM FlashSystem 9100 NVMe is 1.1%, up from 0.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
All-Flash Storage Mindshare Distribution
ProductMindshare (%)
Everpure FlashArray6.9%
Dell Unity XT6.4%
IBM FlashSystem 9100 NVMe1.1%
Other85.6%
All-Flash Storage
 

Featured Reviews

Sowjanya MV - PeerSpot reviewer
Technical Lead at Wipro Limited
Has improved performance for mission-critical workloads and enabled seamless non-disruptive upgrades
The availability is 99.99%, which is the main factor any customer would need because their data should be available whenever they want to access it. This is one main critical thing. It is very easy to upgrade since Pure Storage FlashArray handles it well. Everything is non-disruptive now; previously, there were forklift shifts, but now that is not the case. Pure Storage FlashArray says no to forklift upgrades. Usually hardware requires downtime, but Pure Storage FlashArray has improved their footprint so that they are not asking for downtime; everything is just a non-disruptive activity, which is why customers are more inclined towards Pure Storage FlashArray. Customers want more of the models in their environment due to the performance they are giving, and everything is in one Pure1 Array console where we can view all the models on one page or just an orchestration tool. You don't miss anything; you have replication, notifications about replication, and details about which host groups replication is happening in and if that replication is successful or failed. On a daily basis, our purpose is to create volumes for infrastructure; our daily activities include creating volumes and mapping them to the host, doing any migrations from a VM, clearing the data stores, and carving the volumes to those VMs. One key factor is the data compression with a ratio of 5:1, focusing on space efficiency, inline deduplication, and the compression Pure Storage FlashArray works on; that is a major factor we can suggest to any customer. Analytical capabilities are crucial. Daily, we check the throughput and consumption, and Pure Storage FlashArray provides predictions for one year regarding usage. This prediction helps plan updates well ahead. For support, we just raise a case, and they follow up and get it done. There is also AI readiness, but with the model R2, we don't have much of that AI readiness. For others, we do have AI readiness that predicts capacity based on daily or monthly trends, enabling us to analyze how much space we need or if we need to expand the disk shelf. From an operational point of view, a good feature is that if you accidentally delete a volume, it will be retained in the destroyed state for the next twenty-four hours, which is not the same with any other vendor. I have worked in this storage domain for the past fifteen years, and this option is remarkable, benefiting any L1 or L2 engineer. Additionally, from a compliance perspective, Pure Storage FlashArray has REST APIs enabled. I have not explored automation much, but from a security standpoint, it is strong with encryption data. If you want to automate, you can easily integrate with all clouds and explore Pure Cloud for scheduling workloads, including volume creation. Customers find benefit in Pure Storage FlashArray's single management pane of glass due to the dual controller and active-active setup. If one of the controllers goes down, all workloads automatically shift to the other controller, ensuring their data is safe and accessible at all times. This is a highlighted feature that any customer desires because their data should always be accessible. For SAN workloads, we use Pure Storage FlashArray because for SAN FC fiber channel, we don't use it; we use NetApp for NAS activities. We have clearly split this, so SAN is for mission-critical applications, while network-attached storage handles file systems. This architecture helps us maximize the benefit from Pure Storage FlashArray due to the significant workloads from this giant retail client. From a footprint and energy consumption perspective, you can see energy consumption from the Pure1 storage portal on a daily basis, and it is very compact. The three models we use consume only three units, which is quite low. From a footprint and data center perspective, it doesn't occupy much space. As everything moves to cloud, there are requirements to avoid excess spending on data centers, and Pure Storage FlashArray is efficient in energy consumption and is environmentally friendly.
TH
Assistant Manager, Technology Support & Services at a comms service provider with 51-200 employees
Managing data protection has become consistent and analytics now drive reliable performance
The most valuable features I find in Dell Unity XT include its robust performance and reliability. My thoughts about its in-line deduplication feature are positive. I would assess the value of Dell Unity XT multi-cloud support for my IT environment as highly beneficial. I do utilize Dell Unity XT data protection features. These features have assisted in ensuring data integrity by providing reliable backup and recovery options. Dell Unity XT integration with VMware helps scalability and availability through seamless operations and enhanced performance. My opinion on its Cloud IQ analytics is that it delivers insightful data that aids in operational efficiency.
Yacine Bouakttaya - PeerSpot reviewer
Chief Technology Officer North Africa at Huawei
High-speed data processing has improved billing cycles but performance headroom still needs growth
In terms of improvement regarding IBM FlashSystem 9100 NVMe, I can compare with other competitors, especially regarding solution architecture. Data resiliency can be a concern because IBM can reach up to only four controllers, while others like Dell EMC can support up to eight controllers with better resiliency without service staff. Additionally, the SBC one benchmark is a storage performance console that stresses different storage solutions like Dell EMC and NetApp. It generates metrics of IOPS and latency, showing that the competition can have two million IOPS, significantly outperforming IBM's capabilities. As for the capability of scaling, we can see the limitations in reaching such high-performance levels.

Quotes from Members

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

Pros

"While all these products have their own uses, Pure Storage FlashArray is in a market of its own."
"It's easy to use, and the maintenance upgrades to get free controllers work really well."
"Data deduplication is one feature I found to be the most valuable in the tool...Stability-wise, I rate the solution a ten out of ten."
"We are finding the TCO of flash to be lower than SSD implementations."
"They are quite responsive and our local team was pretty good."
"This solution has improved my organization because it has good performance."
"We've had different types of storage, and three things of this solution are valuable. The first one is its outstanding performance. The second one is its stability. In the about three years that we've had it, we've had component failures, but we never had a service interruption or any data loss. The third one, which is really critical, is that it is super easy to use in terms of provisioning, storage, and managing the arrays. I'm able to maintain a multi-site environment with a couple of dozen arrays with a single mid-level storage admin."
"Pure Storage FlashArray has helped us to improve the reporting and the billing cycle."
"The solution helps us be more competitive in the market against our competitors."
"It’s helped with the overall stability of our VMware environment."
"Because I always need to trouble shooting for IOPS & database (DB) performance issues. I can quickly focus on what is part of the issue. I can decrease downtime and can plan next year's extended capacity budget."
"It's the simplicity part of it. It's the ease of management, it's the call home, the CloudIQ functionality. It's all built in. I think Dell EMC has put a lot of thought into it."
"We can get almost real-time response times."
"I like its performance and support."
"It's easy for us to use because we use other solutions which are built for Unity, like VMware, which are recovery points. They work with the Dell EMC Unity system, as these products integrate well in our environment."
"We can put all the virtualized servers in one place, so our customers can share and manage the devices very easily."
"The most valuable features of IBM FlashSystem 9100 NVMe are its steady performance and usefulness in high-traffic environments."
"IBM FlashSystem 9100 NVMe is easy to use and comes with good performance."
"The FlashCore modules support more value to the architecture due to their unique characteristics."
"The technical support is good."
"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."
"The most valuable feature of IBM FlashSystem 9100 NVMe is the snapshot. We use it daily for all of the storage units."
"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."
 

Cons

"I would like to see a Nagios monitoring plugin which watches the health and performance of the system. The only one available just checks volume capacity."
"There was some complexity in the initial setup."
"In the configuration, which we brought in or tested it in, it has a very limited config as far as the array goes. That said, it still did more than our anticipation."
"Pure Storage FlashArray has not helped decrease the total cost of ownership."
"I would love to see a true one click upgrade solution."
"The solution could improve by having a multi-tenant feature."
"The price of the solution can improve."
"We would like more extended historical data to help with some of the capacity planning. This is something that we are asking for all the time. E.g., what was the historical performance of this particular volume? So, we would like more historicals."
"The payment account area."
"There are some features in VNX that I wish were in the Unity. For example, Storage Groups for isolating LANs and hosts. That is a big issue."
"We are running VMware, and with the VNXe it was possible to restore. We're using Veeam for VMware backups and with the predecessor, it was possible to mount a backup or restore a backup from a storage snapshot. With the Unity 300, this is not possible."
"Software updates have to be downloaded to the root of the device. This pushes the available space to 95% utilization."
"I rate the scalability of Dell Unity XT a nine out of ten."
"Replication with VMware - it's called the vSphere Metro Storage Cluster - is lacking in the Unity and is present in Compellent."
"It could go faster. Make it bigger, better, and faster at a lower price, and I am there."
"Support and licensing are big things, in the end, that needs improvement."
"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."
"IBM is currently not offering volume-based encryption or compression, while other brands or IBM's competitors are doing it."
"In terms of improvement regarding IBM FlashSystem 9100 NVMe, I can compare with other competitors, especially regarding solution architecture."
"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."
"The support could be better."
"The tool's architecture is complex. It also needs to add data utilization reports."
"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 storage system itself should have built-in capabilities for different ransomware attacks."
 

Pricing and Cost Advice

"I would rate the pricing of Pure Storage FlashArray a five out of ten. It is expensive but not too much."
"All storage is expensive so any price improvement would help."
"They have a standardized fee; it's been the same price for 10 years straight. I am happy with the price — I think it's good."
"Because of the SSD, it is cheaper because I am not purchasing so many disks."
"Because the price is a bit higher than other products, the data reduction equalizes the price with amount of the data reduction."
"For us, as the customer, it reduced the price of the management."
"No storage device is cheap, but Pure Storage is fairly priced and offers what you pay for. You get all the licenses in the future when you purchase a license."
"It is a more expensive solution, but it is worth it. You are getting what you paid for."
"It scales, but then you have to buy additional stuff."
"The ROI is right where we need it to be. It's a reasonably priced array."
"It is shipped with all licensed, included for this product range, no need to buy additional licenses"
"There is an annual charge for the license of this product. It has better pricing than its competitor: Pure Storage."
"Just from an overall power and heating usage, it costs substantially less than some of our existing solutions"
"There is no capacity license for XT and no additional costs for expansions. I would rate its pricing as four out of five."
"The price of Dell EMC Unity XT is not reasonable. They should lower it because the trend is to move to the cloud. They have to protect their market by giving commercial or financial incentives."
"Pricing for this product is manageable, though slightly higher than comparable products."
"The tool's pricing is competitive."
"Compared to its competitors, IBM's offering is the most cost-effective."
"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."
"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."
"The product has an average cost."
"The solution's price is competitive."
"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."
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Top Industries

By visitors reading reviews
Manufacturing Company
13%
Financial Services Firm
11%
Construction Company
10%
Comms Service Provider
7%
Manufacturing Company
10%
Outsourcing Company
9%
Computer Software Company
8%
Financial Services Firm
8%
Financial Services Firm
13%
Manufacturing Company
8%
Computer Software Company
8%
Marketing Services Firm
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business71
Midsize Enterprise38
Large Enterprise159
By reviewers
Company SizeCount
Small Business62
Midsize Enterprise48
Large Enterprise96
By reviewers
Company SizeCount
Small Business8
Midsize Enterprise8
Large Enterprise6
 

Questions from the Community

Which should I choose: HPE 3PAR StoreServ or Hitachi Virtual Storage Platform F Series?
Both are great platforms, but if you are considering all flash solutions, I would recommend you to consider Pure Stor...
What is your experience regarding pricing and costs for Pure Storage FlashArray?
I find the pricing of Everpure FlashArray to be quite high compared to other storage solutions; however, the reliabil...
What needs improvement with Pure Storage FlashArray?
I believe we have covered the most important features; the architecture of Pure Storage is essential, and features su...
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...
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...
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...
What is your experience regarding pricing and costs for IBM FlashSystem 9100 NVMe?
The licensing cost for IBM FlashSystem 9100 NVMe can be seen as a bit expensive compared to competitors. You can eith...
What needs improvement with IBM FlashSystem 9100 NVMe?
In terms of improvement regarding IBM FlashSystem 9100 NVMe, I can compare with other competitors, especially regardi...
What is your primary use case for IBM FlashSystem 9100 NVMe?
There are many advantages that we have with IBM FlashSystem 9100 NVMe against, for example, IBM full flash systems an...
 

Also Known As

Pure Storage FlashArray
EMC Unity, Dell EMC Unity
IBM FlashSystem 9100, FlashSystem 9100
 

Overview

 

Sample Customers

Nielsen, Lamar Advertising, LinkedIn, Betfair, UT-Dallas
Draper, Rio Grande Pacific, Royal Victoria Regional Health Centre
Information Not Available
Find out what your peers are saying about Dell Unity XT vs. IBM FlashSystem 9100 NVMe and other solutions. Updated: August 2026.
909,725 professionals have used our research since 2012.