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Dell XtremIO vs Nutanix Unified Storage (NUS) 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:
 

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
1.0
Dell XtremIO enhances performance, reduces latency, increases efficiency, and improves reliability, leading to faster response times and cost savings.
Sentiment score
6.9
Nutanix Unified Storage boosts ROI by reducing costs, enhancing uptime, scalability, and efficiency, while improving data management and productivity.
If you wait more than seven years to buy another one, you get a return on your investment.
Sales Manager at Multicomputos PR
For me, the biggest return on investment when using this solution is that we do not have to have much support staff to run it.
Senior Manager, IT Infrastructure & Support at a tech services company with 501-1,000 employees
The scalability challenge with previous systems is lessened with Nutanix since we can expand by adding new hardware without needing migrations.
Infrastructure Architect & Manager at a real estate/law firm with 201-500 employees
We are saving approximately 20% to 25% compared with the competition.
Global of Central Computing IT Operations Head at a retailer with 10,001+ employees
 

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
7.2
Dell XtremIO support receives mixed reviews, from exemplary technical assistance to variable performance post-Dell merger.
Sentiment score
7.5
Nutanix Unified Storage customer service is efficient and knowledgeable, with high satisfaction but room for improvement in complex cases.
Customers always have their issues resolved promptly.
Sales Manager at Multicomputos PR
Technical support is good at least through vendors, not directly with the principal.
Infrastructure Specialis at a tech services company with 1-10 employees
They come on the call, start troubleshooting immediately, and resolve issues effectively.
Senior System Administrator at a tech vendor with 1,001-5,000 employees
They are very knowledgeable, and if they can't solve the problem, they find the answer within a day or so.
Manager, System Engineering at a mining and metals company with 10,001+ employees
I would give the customer service and technical support a ten out of ten.
PreSales at IKUSI
 

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
6.9
Dell XtremIO is scalable and integrates well with virtualization but may have initial cost and enterprise-level scalability challenges.
Sentiment score
7.8
Nutanix Unified Storage offers scalable, efficient, and stable storage expansion with easy integration and intuitive licensing for diverse environments.
It hasn't broken down anytime in the last six to seven years, despite hurricanes, earthquakes, and power outages.
Sales Manager at Multicomputos PR
Dell XtremIO provides very good scalability, allowing for cluster configurations that are easy to scale.
Trainer, Storage Consultant at Oxon
Dell XtremIO's scalability is quite easy;
System Engineer at Exaware
This means you don't have to buy everything upfront; you can buy what you need and add more as you grow, which is advantageous.
Sales engineer at a tech vendor with 201-500 employees
These three components utilize scalability tools, enabling storage addition to nodes and supporting independent, linear performance growth.
System Engineer at Tata Consultancy
I find the scalability of Nutanix Unified Storage (NUS) to be excellent, and I would rate it a ten based on my clients' requirements.
Technical Lead at Cognizant
 

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
8.3
Dell XtremIO is generally stable and reliable, despite earlier issues, with well-regarded performance and effective support for problems.
Sentiment score
8.0
Nutanix Unified Storage is stable and reliable, offering smooth upgrades, quick issue resolution, and effective technical support.
I would rate the stability of the product at seven out of ten.
Project Manager at a government with 11-50 employees
My customer has been using Dell XtremIO since 2017 and has not experienced any failures.
Systems Engineer at Thakral One (Pvt) Ltd
We have not experienced these issues with Nutanix, which I attribute to the all-flash technology, the quality of their platform, and the responsiveness of the hyper-converged infrastructure.
System Administrator II at a manufacturing company with 10,001+ employees
Nutanix Unified Storage (NUS) is very stable.
Senior System Administrator at a tech vendor with 1,001-5,000 employees
It automatically triggers tasks, causing performance issues.
Nutanix Engineer at a manufacturing company with 10,001+ employees
 

Room For Improvement

Pure FlashArray X requires cost-effective improvements in UI, integration, cloud features, multitenancy, analytics, backup, AI, and scalability.
Dell XtremIO faces challenges with volume limits, user interface, replication, upgrades, support response times, and scalability.
Nutanix Unified Storage requires upgrades in storage capabilities, ease of use, FTP compatibility, analytics, security, support, and pricing.
One way to improve the product is to add an operational assistant that doesn't depend on VMware.
Sales Manager at Multicomputos PR
I would like to see some AI features that would allow arrays to intelligently identify threats or unusual behavior in the data pattern and give an alert.
Cloud Architect at DXC Technology
Storage replication should be essential.
Infrastructure Specialis at a tech services company with 1-10 employees
The interface could be simplified for beginners to ease the configuration of special objects in the system.
Trainer, Storage Consultant at Oxon
There is a significant lack of training, support documents, and forums available for Dell XtremIO, making troubleshooting difficult for third-party individuals.
Systems Engineer at Thakral One (Pvt) Ltd
The API to connect with command line or to see performance very clearly could be enhanced, similar to how NetApp works with Grafana and NetApp monitor, which shows you a comprehensive view of the whole picture.
System Engineer at Exaware
The main concern is pricing, which could deter some customers; addressing this would enhance its appeal.
Senior Solution Software Engineer at Gigamon
The system should move towards AI-driven optimization and enhance S3 object storage capabilities.
Corporate Trainer at a educational organization with 501-1,000 employees
System downtime can disturb the entire ecosystem and impact all applications.
System Engineer at Tata Consultancy
 

Setup Cost

Enterprise buyers see Pure FlashArray X NVMe as a justified premium investment due to performance and comprehensive licensing.
Dell XtremIO's high pricing is justified by performance and features, offering comprehensive licensing but additional products are needed.
Nutanix Unified Storage offers competitive pricing, appreciated for cost-effectiveness, but may be expensive for small businesses or specific regions.
While the prices may be higher than those of other vendors, we see it as a market leader with benefits.
Manager, System Infrastructure & Security at Organik Kimya San. ve Tic. A.S.
The support can be a bit pricey, but the solution is more cost-effective than anything else out there.
Sales Manager at Multicomputos PR
XtremIO offers features that justify a potentially higher price, however, this varies with configuration.
Trainer, Storage Consultant at Oxon
Dell XtremIO is quite expensive compared to other solutions on the market.
Systems Engineer at Thakral One (Pvt) Ltd
Compared to buying three or four vendor solutions, it is much cheaper.
Senior Manager, IT Infrastructure & Support at a tech services company with 501-1,000 employees
The cost has doubled for the same amount of data, which was a challenge when presenting use case justifications for the increased cost.
Infrastructure Architect & Manager at a real estate/law firm with 201-500 employees
Nutanix Unified Storage (NUS) has definitely helped reduce our total cost of ownership.
Information Technology Managed Services Provider at SCE
 

Valuable Features

Pure FlashArray X NVMe offers exceptional performance, reliability, scalability, and seamless VMware integration, enhancing workload efficiency and user experience.
Dell XtremIO offers high performance, scalability, and efficient management with deduplication and compression, ideal for complex workloads.
Nutanix Unified Storage offers scalability, efficiency, robust security, seamless cloud integration, and simplifies IT management, enhancing storage reliability.
Its data compression feature is the best that we have ever seen.
Sales Manager at Multicomputos PR
Pure FlashArray X NVMe helps to improve our processing speed.
Manager, System Infrastructure & Security at Organik Kimya San. ve Tic. A.S.
We are satisfied with the performance as it is significantly faster compared to traditional storage options.
Project Manager at a government with 11-50 employees
The inline data deduplication feature and compression were useful for me because the performance was very good when I needed to read or write from storage, latency was reduced, storage was extended, and volume replication was supported.
System Engineer at Exaware
Scalability is a significant feature of Dell XtremIO, as it is easy to expand and manage.
Trainer, Storage Consultant at Oxon
The speed and scalability of Dell XtremIO are significant features that improve data storage management.
Systems Engineer at Thakral One (Pvt) Ltd
Nutanix Unified Storage (NUS) is appreciated for its fault tolerance and redundancy at the cluster level, which ensures reliable storage of files, folders, and other information accessible on the client side.
Nutanix Engineer at a manufacturing company with 10,001+ employees
The cybersecurity features of Nutanix Unified Storage (NUS) when dealing with unstructured data, such as ransomware threats, provide the ability to detect and back up block-based storage, allowing me to restore repositories or sets of block storage with one button click, which is automatic.
Network Engineer at Alabama A & M University
My experience with using Nutanix Unified Storage (NUS) for data-intensive workloads is that we have many SQL Servers and they perform much better than they did when we used hybrid converged previously.
Senior Manager, IT Infrastructure & Support at a tech services company with 501-1,000 employees
 

Categories and Ranking

Pure FlashArray X NVMe
Sponsored
Ranking in All-Flash Storage
17th
Average Rating
9.0
Reviews Sentiment
6.7
Number of Reviews
36
Ranking in other categories
NVMe All-Flash Storage Arrays (6th)
Dell XtremIO
Ranking in All-Flash Storage
19th
Average Rating
7.6
Reviews Sentiment
6.2
Number of Reviews
55
Ranking in other categories
No ranking in other categories
Nutanix Unified Storage (NUS)
Ranking in All-Flash Storage
6th
Average Rating
8.8
Reviews Sentiment
7.2
Number of Reviews
114
Ranking in other categories
Software Defined Storage (SDS) (2nd), Public Cloud Storage Services (5th), File and Object Storage (3rd), NVMe All-Flash Storage Arrays (4th)
 

Mindshare comparison

As of January 2026, in the All-Flash Storage category, the mindshare of Pure FlashArray X NVMe is 1.4%, up from 0.7% compared to the previous year. The mindshare of Dell XtremIO is 0.9%, up from 0.8% compared to the previous year. The mindshare of Nutanix Unified Storage (NUS) is 0.8%, up from 0.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
All-Flash Storage Market Share Distribution
ProductMarket Share (%)
Nutanix Unified Storage (NUS)0.8%
Pure FlashArray X NVMe1.4%
Dell XtremIO0.9%
Other96.9%
All-Flash Storage
 

Featured Reviews

Jaehoon Oh - PeerSpot reviewer
Chief Technology Officer at Lambda256
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.
AS
System Engineer at Exaware
Has improved data reduction and snapshot efficiency while supporting critical workloads
There are some areas that could be improved with Dell XtremIO. The API to connect with command line or to see performance very clearly could be enhanced, similar to how NetApp works with Grafana and NetApp monitor, which shows you a comprehensive view of the whole picture. The snapshot functionality could work more similarly to Snap Center. If I want to see all the VCenter with the VM, I think it needs the API for this. I do see big differences between Dell and other products. NetApp works very closely with VCenter, and Hitachi also integrates well, but Dell is not very clear and does not proceed well with VCenter integration with Dell. It needs the API, and I need to see all the snapshots. If I want to restore a VM from only a few directories or a few files that I need to restore, it is very difficult. I do see some differences in licensing. For the last few years, the Dell EMC price is acceptable. A few years ago, Dell EMC was expensive, approximately 20 percent more than NetApp. Right now the budget between EMC and NetApp is very closely aligned. Regarding the installation process and deployment of Dell XtremIO, I notice that in Israel, a lot of professional services and engineers who work with Dell EMC have moved to another storage company. I do not know why. Dell EMC does not have enough engineers, system engineers, or professional services engineers to provide service to the old clients, similar to how NetApp or Hitachi do. I think Dell XtremIO is between easy and complicated to deploy; it gives you the whole picture, but I need to go closely to VCenter to connect to VCenter to see the snapshot and to see performance with more dashboards of performance. I also need to connect the switch fiber channel to see all zoning to give me more flexibility to install or configure fiber channel or to see the performance of the fiber channels. I think there should be some fiber channel disconnect adapter or better troubleshooting from hardware for errors.
Amarnath Charugundla - PeerSpot reviewer
System Engineer at Tata Consultancy
Unified management and cost-effectiveness lead to positive experiences and future savings
Improvement is necessary wherein the memory or storage should not breach 90%, because if breached, it becomes unmanageable. We have to set alerts or CPU triggering for 95% for the first warning. Other activities on nodes or file systems should be properly maintained. We must monitor the dashboard for P1, P2 alerts in the Nutanix Unified Storage (NUS) file share system including SMB, NFS, objects, and blocks. Attention should be maintained for any alerts such as CPU, memory, and RAM alerts, as exceeding these creates issues within teams. If triggered to 95% and forgotten, it crosses the SLA breach, causing disturbances to application, web, and platform teams. Continuous monitoring on the Nutanix dashboard is essential. Even a highly experienced person in Nutanix Unified Storage (NUS) cannot provide a 10 rating out of 10 because it is a vast system. I would rate it eight from my perspective.
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Comparison Review

it_user182013 - PeerSpot reviewer
Federal Civ/Intel Engineering Lead at a tech vendor with 1,001-5,000 employees
May 1, 2015
Measuring Up: EMC XtremIO and HP 3PAR
Leading up to EMC World 2015, IT Central Station asked how I would compare EMC XtremIO and HP 3PAR. Until recently, the flash storage conversation in my organization and many others has centered on XtremIO and Pure Storage, the leaders of the all-flash array (AFA) space. To that end, I've written a…
 

Top Industries

By visitors reading reviews
Computer Software Company
12%
Manufacturing Company
11%
Financial Services Firm
11%
Government
6%
Financial Services Firm
12%
Computer Software Company
9%
Manufacturing Company
8%
Performing Arts
7%
Computer Software Company
21%
Manufacturing Company
13%
Educational Organization
6%
Financial Services Firm
5%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business15
Midsize Enterprise11
Large Enterprise12
By reviewers
Company SizeCount
Small Business16
Midsize Enterprise14
Large Enterprise29
By reviewers
Company SizeCount
Small Business26
Midsize Enterprise30
Large Enterprise64
 

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 is your experience regarding pricing and costs for Pure FlashArray X NVMe?
The price of Pure FlashArray X NVMe is very expensive, though I do not know the actual price because I am using the E...
What needs improvement with Pure FlashArray X NVMe?
I have no specific improvements to suggest for Pure FlashArray X NVMe at this time. The performance statistics could ...
What do you like most about Dell EMC XtremIO?
The feature I like most about Dell Xtremio is its hardware quality compared to other vendors. It's clear they're cont...
What is your experience regarding pricing and costs for Dell XtremIO?
Pricing is hard to determine as it depends on the given configuration. XtremIO offers features that justify a potenti...
What needs improvement with Dell XtremIO?
There are some areas that could be improved with Dell XtremIO. The API to connect with command line or to see perform...
What do you like most about Nutanix Unified Storage?
Nutanix has excellent product documentation available on their portals, written in simple, easy-to-understand language.
What is your experience regarding pricing and costs for Nutanix Unified Storage?
It is very cost-effective compared to the traditional environment. With new hardware, it's a long-term investment but...
What needs improvement with Nutanix Unified Storage?
To improve Nutanix Unified Storage (NUS), cost is always an issue for every company, especially when we talk about la...
 

Also Known As

Pure FlashArray//X NVMe, Pure FlashArray//X, FlashArray//X
Dell EMC XtremIO Flash, Dell EMC XtremIO X2, XtremIO, XtremIO X2
Nutanix Files Storage, Nutanix Volumes Block Storage, Nutanix Objects Storage
 

Overview

 

Sample Customers

Fremont Bank, Judson ISD, The Nielsen Company
Raiffeisen Bank Bulgaria, Wentworth-Douglas Hospital
JetBlue, International Speedway Corporation, Volkswagen SAIC, Brighton and Hove City Council, Foresters Financial, Janus International Group, Cloud Comrade, Serco
Find out what your peers are saying about Dell XtremIO vs. Nutanix Unified Storage (NUS) and other solutions. Updated: December 2025.
881,114 professionals have used our research since 2012.