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Dell Unity XT vs HPE Alletra Storage comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jun 22, 2025

Review summaries and opinions

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

ROI

Sentiment score
1.0
Organizations reduced costs and improved performance with Pure FlashArray X NVMe, achieving quick ROI and efficient resource management.
Sentiment score
7.4
Dell Unity XT offers cost savings, increased efficiency, and quick ROI with improved performance and simplified management.
Sentiment score
5.7
HPE Alletra Storage users report cost-effectiveness, improved performance, and reliability, though some await measurable returns post-implementation.
By opting for the gold subscription every three years, you get a free upgrade to the latest controller release.
If you wait more than seven years to buy another one, you get a return on your investment.
For anyone new to the company, it is very easy to understand what is going on, how to manage, how to get access and know what it is doing.
Uptime is ROI.
With Alletra, it downloads the software, and you just hit the button, and go.
 

Customer Service

Sentiment score
7.1
Pure FlashArray X NVMe's technical support is praised for responsiveness, despite occasional follow-up issues, earning high customer satisfaction.
Sentiment score
6.7
Dell Unity XT customer service is praised for responsiveness but criticized for slow response times and support inconsistencies.
Sentiment score
6.7
HPE Alletra Storage customer service is praised for expertise, rapid issue resolution, and strong collaboration, despite occasional response delays.
With Pure FlashArray X NVMe, we need to escalate the issue and get an account manager for its resolution.
We also had one outage where a controller of one of the products had failed and had to be replaced on-site.
Customers always have their issues resolved promptly.
The support team is familiar with the product and is available on-site during support times, which improves our experience.
Dell solutions are backed by excellent service and support.
The technical support sometimes takes three to four days to get hardware to facilities.
We have four-hour support, and 99% of our issues are resolved within that timeframe.
Last week, a ticket that needed to be solved in six hours took one week.
As soon as we have a problem, we open a ticket with them, and they immediately get back to us well within the four hour SLA that we have with them.
 

Scalability Issues

Sentiment score
7.1
Pure FlashArray X NVMe offers scalable storage with low latency, easy upgrades, though capacity customization and high costs are noted.
Sentiment score
8.0
Dell Unity XT's scalability, modular upgrades, and robust architecture receive high satisfaction from medium to large businesses.
Sentiment score
7.1
HPE Alletra Storage is praised for scalability and seamless expansion, though some desire improved configuration options in specific contexts.
You cannot increase capacity if latency is present.
It is highly scalable.
It is suitable for both medium-sized and enterprise businesses.
Dell Unity XT is quite scalable and can be scaled up to the petabyte level.
We've had zero downtime.
Alletra provides modular, non-disruptive scale-up and scale-out.
If we do grow beyond what the appliance already has, we know that service will take care of it and grow the appliance for us without needing to forklift upgrade.
 

Stability Issues

Sentiment score
8.1
Pure Storage offers exceptional stability and reliability with outstanding support, consistently achieving high user ratings for performance and service.
Sentiment score
8.8
Dell Unity XT is praised for strong stability and reliability, with minor issues infrequently affecting its consistent performance.
Sentiment score
8.1
HPE Alletra Storage is lauded for its stability and reliability, providing zero downtime and consistent performance across environments.
During the eight years, there have been no problems such as hardware failure or stopping.
I would rate the stability of the solution as a ten out of ten.
I would rate the stability of the product at seven out of ten.
I would rate the overall stability of Dell Unity XT an eight out of ten.
The solution is stable and rock-solid.
I have not experienced any downtime, crashes, or performance issues.
I have experienced no issues yet, so I assess the stability and reliability of HPE Alletra Storage as 100%.
 

Room For Improvement

Pure FlashArray X requires cost-effective improvements in UI, integration, cloud features, multitenancy, analytics, backup, AI, and scalability.
Dell Unity XT requires improvements in deduplication, user interface, migration, automation, scalability, and support for better efficiency.
HPE Alletra Storage requires improvements in pricing, interface, setup, AI features, NVMe support, integration, and customer resources.
Many options to check performance, like read, writes, random writes, and random reads, are missing in Pure FlashArray X NVMe.
We would appreciate a built-in transparent failover in the next release to eliminate the need for a separate metro cluster.
I'm eagerly anticipating the roadmap's promise of introducing multiple controllers, which could significantly boost scalability and resilience.
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.
I believe if Dell can integrate AI to predict potential failures, especially in hardware like hard disks, that would be very useful for proper maintenance.
The pricing is a bit higher than expected.
They shouldn't strip out anything from InfoSight. That is really helpful software to see how the storage arrays are performing and has helped us do a lot of troubleshooting.
They would like to have one tool that can take them everywhere. There should be a single pane of glass.
Most importantly, there is going to be the flexibility of moving compute and storage on Alletra MP.
 

Setup Cost

Enterprise buyers see Pure FlashArray X NVMe as a justified premium investment due to performance and comprehensive licensing.
Dell Unity XT provides cost-effective pricing and all-inclusive licensing, balancing cost and features effectively against competitors.
HPE Alletra Storage offers competitive pricing, flexibility, and quality support, though initial costs can be high and complex.
While the prices may be higher than those of other vendors, we see it as a market leader with benefits.
The support can be a bit pricey, but the solution is more cost-effective than anything else out there.
Pure FlashArray X NVMe’s pricing is cheaper than other products.
It is priced at around or under $50,000.
The cost is not cheap nor expensive.
Commercially, Dell Unity XT is viable and competitively priced.
For future use, we bill based on device consumption rather than the traditional datacenter model.
The predictability of having that one-time cost is everything for the data center.
It's expensive.
 

Valuable Features

Pure FlashArray X NVMe offers exceptional performance, reliability, scalability, and seamless VMware integration, enhancing workload efficiency and user experience.
Dell Unity XT delivers unified storage with easy management, strong VMware integration, rapid deployment, and cost-effective data solutions.
HPE Alletra Storage offers intuitive management, high-speed performance, and cloud-like efficiency, enhancing storage performance and cost efficiency.
Pure Storage has signature security technology, which cannot be deleted, even if you are an administrator.
The platform's robust features include excellent sustainability tracking, and a comprehensive dashboard offering insights into IOPS, bandwidth, performance, and virtual activities.
Its data compression feature is the best that we have ever seen.
It helps with data cost management and is seen as a mid-range product with good performance.
We installed the Flash, which makes our IO operations fast and efficient.
If their growth is not significant, we might suggest mid-level Unity storage like Unity 300.
With NVMe drives, a single drive can provide up to thirty thousand IOPS.
The guarantee of data availability is very important to us. Data runs everything.
The guarantee of data available to our organization is important. We're a manufacturing company. If our systems go down, we lose dollars every minute that system's offline.
 

Categories and Ranking

Pure FlashArray X NVMe
Sponsored
Ranking in All-Flash Storage
14th
Average Rating
9.0
Reviews Sentiment
6.7
Number of Reviews
36
Ranking in other categories
NVMe All-Flash Storage Arrays (6th)
Dell Unity XT
Ranking in All-Flash Storage
6th
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
196
Ranking in other categories
No ranking in other categories
HPE Alletra Storage
Ranking in All-Flash Storage
3rd
Average Rating
9.0
Reviews Sentiment
7.2
Number of Reviews
83
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of July 2025, in the All-Flash Storage category, the mindshare of Pure FlashArray X NVMe is 0.8%, up from 0.8% compared to the previous year. The mindshare of Dell Unity XT is 6.7%, down from 10.2% compared to the previous year. The mindshare of HPE Alletra Storage is 9.8%, up from 1.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
All-Flash Storage
 

Featured Reviews

Jaehoon Oh - PeerSpot reviewer
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.
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.
Anand Algesan - PeerSpot reviewer
Provisioning and encryption ease improve data storage efficiency
To improve HPE Alletra Storage, it needs to have a true active-active controller; it claims to have an active-active controller from the back end, however, the second node is pretty much sitting there doing nothing. The MV 10000 series, which is the next series, is an improvement to HPE Alletra, and HPE is already doing that. In the next release, I would prefer to see better dedupe features; I know other companies do excellent dedupe, and they have protection group policies, meaning you have immutable data in case of a ransomware attack. If you're on the SAN, it should give you a way to protect that data without being erased. Other vendors have that capability built-in, ensuring that you can't erase the data, so features similar to that would be great.
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Top Industries

By visitors reading reviews
Computer Software Company
14%
Financial Services Firm
11%
Manufacturing Company
11%
Government
6%
Educational Organization
27%
Computer Software Company
13%
Manufacturing Company
8%
Government
5%
Computer Software Company
17%
Manufacturing Company
10%
Financial Services Firm
8%
Government
6%
 

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?
Adding some functions to the product would be beneficial. Storage replication should be essential, and the analytics ...
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 do you like most about HPE Alletra?
It offers rich features and high speed for transferring data.
What is your experience regarding pricing and costs for HPE Alletra?
The pricing, setup cost, and licensing for HPE Alletra Storage are in line with the market from both CapEx and OpEx p...
What needs improvement with HPE Alletra?
Improving HPE Alletra Storage is challenging to answer because there are several different metrics to consider. From ...
 

Also Known As

Pure FlashArray//X NVMe, Pure FlashArray//X, FlashArray//X
EMC Unity, Dell EMC Unity
No data available
 

Overview

 

Sample Customers

Fremont Bank, Judson ISD, The Nielsen Company
Draper, Rio Grande Pacific, Royal Victoria Regional Health Centre
Accenture, Aetna, AIG, Airbus, Allianz, American Express, ATT, Bank of America, Barclays, BASF, Bayer, Berkshire Hathaway, Boeing, BNP Paribas, Citigroup, Coca Cola, Comcast, Credit Suisse, Dell, Deutsche Bank, ExxonMobil, Ford Motor Company, General Electric, Google, HSBC, IBM, Intel, JPMorgan Chase, Kroger, L'Oreal, Merck
Find out what your peers are saying about Dell Unity XT vs. HPE Alletra Storage and other solutions. Updated: July 2025.
861,524 professionals have used our research since 2012.