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Dell Unity XT vs IBM FlashSystem 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

Pure FlashArray X NVMe
Sponsored
Ranking in All-Flash Storage
16th
Average Rating
9.0
Reviews Sentiment
7.6
Number of Reviews
34
Ranking in other categories
NVMe All-Flash Storage Arrays (7th)
Dell Unity XT
Ranking in All-Flash Storage
4th
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
194
Ranking in other categories
No ranking in other categories
IBM FlashSystem
Ranking in All-Flash Storage
13th
Average Rating
8.2
Reviews Sentiment
6.9
Number of Reviews
110
Ranking in other categories
NAS (4th), Modular SAN (Storage Area Network) (4th)
 

Mindshare comparison

As of January 2025, in the All-Flash Storage category, the mindshare of Pure FlashArray X NVMe is 0.8%, down from 1.0% compared to the previous year. The mindshare of Dell Unity XT is 10.3%, up from 10.0% compared to the previous year. The mindshare of IBM FlashSystem is 7.6%, up from 6.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
All-Flash Storage
 

Q&A Highlights

Miriam Tover - PeerSpot reviewer
Aug 24, 2021
 

Featured Reviews

Eugene Hemphill - PeerSpot reviewer
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.
Syed Habib - PeerSpot reviewer
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.
Raanan Sitton - PeerSpot reviewer
Offers cost-effective storage for small companies with budget constraints
IBM FlashSystem 5300 is offered at a very low cost in Israel, which is advantageous for small companies. However, other features like deduplication and compression do not perform effectively. The price sensitivity makes it a viable option for clients with budgetary constraints, as it allows us to secure deals based on the cost rather than advanced performance.

Quotes from Members

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

Pros

"The most valuable features of this solution are its ease of use and performance."
"The solution is scalable."
"The solution is very straightforward to set up."
"What I really like about this program, is that it is easy to use and easy to configurate."
"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."
"The latency is good."
"The initial setup was extremely simple and straightforward."
"It is scalable. We can add additional tools if we need to expand it."
"All-flash is a game changer. If you need performance, simple operations, and you plan to use it with VMware, it is a good choice."
"The most valuable feature of Dell Unity XT is its support of protocols for both block, and file levels. It has the features a store solution should have."
"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."
"VMware integration makes the life of our engineers easier, as we are almost 100% virtualized and this feature is used on a daily basis."
"VMware integration: Grants both the Storage and Virtual Administrator the ability to create and mount datastores, or even to check how much space each VM is consuming."
"I like the easy management with the new Unisphere management and the HTML5 interface."
"This product is perfect for small, and mid-range customers who need to pay less, but still, get enterprise-level capabilities."
"IBM FlashSystem is a stable solution."
"The initial setup is straightforward and can be done in an hour and a half by one person."
"The initial customer technical support was efficient and effective."
"Virtualization of external storage, while adding cache and speed to the external storage."
"This solution is convenient, user-friendly, convenient and reliable."
"The most valuable features are deduplication and compression."
"It's very easy to manage."
"This solution is very stable."
 

Cons

"Many options to check performance, like read, writes, random writes, and random reads, are missing in Pure FlashArray X NVMe."
"There are some challenges with data encryption and reduction."
"I would like to see replication and DR features in the next release of this solution."
"The UI for this solution needs to be improved."
"We need better data deduplication."
"I want to see Pure Storage not only be for fast storage, but I want to see it be for the entire data center."
"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."
"In terms of what needs improvement, the dashboard and management could be simplified."
"It would be better if there were more integrations."
"My only complaint would be some of the CLI Help files could be a little more detailed, but that's very minor complaint. We were trying to run some commands just to see how the storage snaps were interacting with the storage array, and it was a little difficult to look up exactly what commands should be run. The Help files detailing what exactly the commands did wasn't as detailed as we would have wanted them to be."
"We need to improve the controller to work as active-active. We also need to improve the snapshot on the Unity site."
"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."
"Unity only does compression. It would be nice if there was a deduplication feature as well. At my previous job, we used XtremIO and that was deduplication and not compression, and I think we got more out of it because the more OSs you have that are the same, the fewer copies it needs to keep of all that data. So, the deduplication would be a nice feature to have."
"There is an issue with data duplication occurring on the flash memory. It should be improved. Timely updates and upgrades to the latest versions would be great."
"Things that could be improved include one-to-many replication, data deduplication, and asynchronous Fibre Channel replication. It is asynchronous on iSCSI and I would like to have that on the Fibre Channel. Unisphere-wise, I have to log in to each Unity as a unique environment. In VNX, I logged in to the domain and I was logged in to every VNX. So that's missing."
"The solution should include a free process in the HPE portal that uses serial numbers to verify that hardware is genuine."
"The GUI for monitoring performance metrics could provide better visibility. For example, it doesn't let me segregate the IOPS per volume."
"IBM FlashSystems is lagging in optimizing storage technologies."
"The data reduction pool feature sucks and is not recommended for use with heavy workloads."
"IBM could do more marketing and improve brand awareness. I had never heard of this product until a colleague told me about it. FlashSystem could add a few features, but it would probably increase the price. For example, Pure Storage offers instant snapshotting and partitioning. That would be nice to have, but I think the cost would go up."
"The pricing could be improved, but I think it's getting better and better with each version. IBM needs to implement NAS storage again, as this is a big flaw. Dell EMC is very good at this and if you compared them based on NAS storage, Dell EMC would win right away. IBM's solution for NAS storage is very complicated. We don't have a storage box that provides file sharing from itself, we have to put software on it and go through a whole complicated process. It should be simplified."
"The solution is not easy to use and could improve."
"The solution is quite expensive. That's one of the downsides to using it."
"The storage capacity of this solution could be improved."
 

Pricing and Cost Advice

"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."
"We pay approximately $50,000 USD per year in licensing fees."
"Given its price, Pure is not the first option."
"The tool is an investment that we've budgeted for. While the prices may be higher than those of other vendors, we see it as a market leader with benefits. We don't regret purchasing it."
"The licensing is on a yearly basis."
"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."
"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."
"The support cost per array is about $20,000 a year for 24/7 support."
"We have to apply for a license for each system."
"It is shipped with all licensed, included for this product range, no need to buy additional licenses"
"It is priced at around or under $50,000."
"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."
"All the licenses are included from day one of your purchase of the product, so you don't have to buy licenses separately. There are no additional costs to be paid for the maintenance of the solution."
"We looked at HPE Nimble but the price of the Unity XT was very good compared to the competition."
"It is a good return on investment."
"We bought extended warranties out of the box because our customer has a bad habit of managing warranties."
"This solution is expensive compared to other solutions."
"Our customers would like IMB FlashSystem to be less expensive."
"Overall the price of the solution is expensive and this includes the license."
"They've been much more aggressive in the last five, six years than they were before that."
"The price depends of the technology that our customers need. The price can come at a lower cost but this may increase as storage is added."
"The price of IBM FlashSystem is a little high because you pay a premium because the solution is from IBM. We had paid for the SLA prior to using the solution."
"The pricing is competitive in our country."
"The price of IBM FlashSystem is reasonable."
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Answers from the Community

Miriam Tover - PeerSpot reviewer
Aug 24, 2021
Aug 24, 2021
EMC's Unity is not comparable to the performance of an IBM FlashSystem option, but it is fairly close in performance profile to the just released Storewize V5100 model 424. If you provide the initial amount of storage you are going to purchase and your expected capacity growth rate, plus any workoad/performance info you have on hand, and we will give you a very quick TCO and performance compar...
2 out of 5 answers
IB
Apr 17, 2019
For a performance comparison, I use a vendor-neutral benchmark portal like Storage Performance Council: For SPC-1: a) IBM storage, including All-Flash (performance) https://spcresults.org/benchmarks/results/top10/performance/spc1/1?field_peer_review_status_target_id=48&field_sponsor_target_id=18 b) Overall top 10 SPC-1 (performance) https://spcresults.org/benchmarks/results/top10/performance/spc1/1?field_peer_review_status_target_id=48&field_sponsor_target_id=18 c) Overall top 10 SPC-1 (price/performance) https://spcresults.org/benchmarks/results/top10/price/spc1/3 For SPC-2: a) Overall top 10 SPC-2 (performance) https://spcresults.org/benchmarks/results/top10/performance/spc2/1 b) Overall top 10 SPC-2 (price/performance) https://spcresults.org/benchmarks/results/top10/price/spc2/1 I also look at specific benchmarks from the vendors: a) IBM https://www.ibm.com/developerworks/community/blogs/InsideSystemStorage/entry/spc_benchmarks_for_disk_system?lang=en b) Dell EMC https://www.dellemc.com/resources/en-us/asset/white-papers/products/storage/h15161-dell_emc_unity-performance_metrics.pdf
it_user1000854 - PeerSpot reviewer
Apr 17, 2019
I am about to take delivery of a Unity 400 with SAS and have never considered an IBM hardware so i am not able to compare based on experience.
 

Top Industries

By visitors reading reviews
Computer Software Company
16%
Manufacturing Company
12%
Financial Services Firm
11%
Government
6%
Educational Organization
71%
Computer Software Company
5%
Manufacturing Company
3%
Government
2%
Computer Software Company
15%
Financial Services Firm
11%
Manufacturing Company
9%
Government
7%
 

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.
What needs improvement with Pure FlashArray X NVMe?
Maybe the price can be reduced since the solution is very expensive.
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?
Many factors affect purchasing directly from IBM, often involving a multi-step process. Customers, especially in bank...
What needs improvement with IBM FlashSystem?
There is room for improvement in the troubleshooting part, specifically related to IBM Spectrum for Insight. Customer...
 

Also Known As

Pure FlashArray//X NVMe, Pure FlashArray//X, FlashArray//X
EMC Unity, Dell EMC Unity
IBM Storwize
 

Learn More

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Overview

 

Sample Customers

Fremont Bank, Judson ISD, The Nielsen Company
Draper, Rio Grande Pacific, Royal Victoria Regional Health Centre
Celero, Friedhelm Loh Group, Clarks, Mingkang Natregro Health Food Group, Sofia, Etisalat Fights Fraud, UF Health Shands Hospital, Generali, Elecon Engineering Company Limited, Ventiv , Technology, CPFL Energia, Royal Caribbean Cruises Ltd., SciQuest, Coca-Cola Bottling Co. Consolidated, Paddy Power, Kelsey-Seybold Clinic, Interconnect Services, Severstal IP-Only AB, PVU Group GmbH
Find out what your peers are saying about Dell Unity XT vs. IBM FlashSystem and other solutions. Updated: January 2025.
831,158 professionals have used our research since 2012.