Dell PowerProtect Data Domain vs Quantum DXi Series comparison

Dell Technologies and Quantum are both solutions in the Deduplication Software category. Dell Technologies is ranked #1 with an average rating of 8.7, while Quantum is ranked #12. Dell Technologies holds a 25.4% mindshare in DS, compared to Quantum’s 4.4% mindshare. Additionally, 90% of Dell Technologies users are willing to recommend the solution, compared to 66% of Quantum users who would recommend it.

Dell PowerProtect Data Domain

Read 86 Dell PowerProtect Data Domain reviews

10,611 Views
5,942 Comparison Views

90% willing to recommend

Quantum DXi Series

Read 2 Quantum DXi Series reviews

1,546 Views
711 Comparison Views

66% willing to recommend

Dell PowerProtect Data Domain

Quantum DXi Series

Comparison Buyer's Guide

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Executive SummaryUpdated on Nov 5, 2025

Dell PowerProtect Data Domain and Quantum DXi Series compete in data storage and protection. Dell PowerProtect Data Domain has an advantage in support and setup costs, while Quantum DXi offers robust features appealing to those seeking comprehensive capabilities despite higher costs.

Features: Dell PowerProtect Data Domain offers efficient deduplication, scalability, and seamless integration with VMware environments. Quantum DXi Series provides powerful data backup capabilities, strong data deduplication, and advanced recovery options.

Ease of Deployment and Customer Service: Dell PowerProtect Data Domain is known for straightforward deployment and responsive customer support, enhancing user experience. Quantum DXi Series, while robust, demands more initial setup effort and complexity in troubleshooting, making Dell's service more favorable.

Pricing and ROI: Dell PowerProtect Data Domain presents a cost-effective setup with a favorable ROI due to its efficient resource utilization. In contrast, Quantum DXi Series, though pricier, delivers substantial ROI through its extensive feature set, appealing to those prioritizing advanced functionalities.

To learn more, read our detailed Dell PowerProtect Data Domain vs. Quantum DXi Series Report (Updated: December 2025).

Buyer's Guide

Dell PowerProtect Data Domain vs. Quantum DXi Series

December 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

Dell PowerProtect Data Domain

Ranking in Deduplication Software

1st

Average Rating

8.6

Reviews Sentiment

6.7

Number of Reviews

Ranking in other categories

Disk Based Backup Systems (1st)

Quantum DXi Series

Ranking in Deduplication Software

12th

Average Rating

9.6

Reviews Sentiment

7.7

Number of Reviews

Ranking in other categories

Backup and Recovery (65th)

Mindshare comparison

As of January 2026, in the Deduplication Software category, the mindshare of Dell PowerProtect Data Domain is 25.4%, down from 29.2% compared to the previous year. The mindshare of Quantum DXi Series is 4.4%, up from 3.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Deduplication Software Market Share Distribution
Product	Market Share (%)
Dell PowerProtect Data Domain	25.4%
Quantum DXi Series	4.4%
Other	70.2%

Deduplication Software

Featured Reviews

Branko Cirovic

Storage Engineer at Comtrade Group

Provides seamless backup integration and long-term reliability for enterprise data protection

The price is quite high; this product is not considered cheap. Additionally, if you use higher availability boxes, they also come at a premium price. However, they provide business continuity, which is the main reason why companies invest in this solution. Tape is slow; when restoring several virtual machines or databases amounting to several terabytes, Dell PowerProtect Data Domain represents the fastest and most reliable solution, ensuring great integration with backup software. If a customer has limited budget constraints, they may opt for cheaper external storage comprised of just a bunch of disks and utilize it for backup, as backup is not a business-critical service. However, I see great value in Dell PowerProtect Data Domain because it is fully automated, features great integration with backup software, and provides good value for money. I would rate software support as a ten, while I would give hardware support a seven. I never give any product a perfect score; I think Dell PowerProtect Data Domain deserves a nine. The only minor problems are the certificate issue and the price. These certificate issues are quite rare and mainly arise when we forget to restart and upgrade the box for several years.

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reviewer2301564

Expert Backup at a tech services company with 201-500 employees

A virtual deduplication backup appliance that protects physical and virtual data across remote sites, the datacenter and cloud deployments

Given its ease of use and management, I believe there are no specific caveats that users need to be aware of during the setup of DXRIS for backups. The process was straightforward, and I did not encounter any challenges or issues. As for a rating on a scale of one to ten, with one being the worst and ten being the best, I would rate the Quantum DXI Series a nine. My deduction is primarily influenced by personal preferences, particularly regarding the user interface and it is a highly commendable system, I would rate it a solid nine 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

"It is stable. I would rate the stability of the solution a nine out of ten."

"By using Data Domain, we get the advantage of data deduplication, reducing data size."

"The most valuable feature is the performance because you can back up data really quickly."

"I like the different features. We work closely with Dell on different products and features, which is why we use them all."

"The most valuable features of Dell PowerProtect DD are ease of use and deduplication."

"We have found the product to be scalable."

"I believe that for backup and deduplication, this is the top product."

"It is very fast as compared to the other competitors. Its simplicity and bit rate are also valuable. It takes less time if we compare it with the old solution that we have."

More Dell PowerProtect Data Domain pros

"I am impressed with the tool's technical alliance with Veeam and Veritas."

"While the challenges posed by the difficulties were significant, they prompted the replacement of problematic components, resulting in the resolution of issues. Importantly, there were no substantial ongoing concerns. Regarding the overall performance, it has been consistently excellent."

Cons

"If I were a manager for this infrastructure, I would look into load balancing for cost, maintenance after sale, and improving Dell PowerProtect DD."

"The pricing should be adjusted. Customers continuously talk about the price. They know it is a good solution and they really need the type of storage the solution offers, but it costs somewhere around $100,000 and up. It's not cheap, but it's very important for data vendors."

"The only problem is that it's more expensive than any other vendors available in the market."

"The initial setup is complex."

"The size and scale of the product are limited and could be improved."

"When you use Data Domain, you have to have at least 20% free space so it can work properly. Sometimes we struggle with that, because we wanted to use all the free space, but then Data Domain becomes really slow. I understand that 20% is needed to process all the data, and doing the duplication and compression and all that, but it would be a big improvement if they did not require that 20%, because it is just too much to have available."

"The software from Dell that can be used to operate Data Domain needs to have enhancements made to the user interface. It is too complex."

"Dell PowerProtect DD should come out with its own system so we do not have to use Data Domain. For example, something similar to what Symantec has done."

More Dell PowerProtect Data Domain cons

"Perhaps the most notable area for enhancement lies in the web interface for management. The current limitations in LDAP editing capabilities are not addressed in the UI, and I haven't observed any recent updates. It's possible that the new version of the DXI service incorporates improvements in the GUI, but I cannot confirm. While there is room for improvement in the current GUI, it remains a relatively minor issue. Overall, the system is comprehensive, covering aspects such as reports on latency and networking, leaving little room for additional enhancements in those areas."

"The product needs to improve performance while scaling out. It also needs to improve stability."

Pricing and Cost Advice

"The yearly subscription is very affordable for our customers, but the price could be a little cheaper overall."

"The approximate license cost for Dell PowerProtect DD (Data Domain) is around 5,00,000."

"The solution is expensive. However, if you pay less you receive less, it is cost-effective."

"The price may be a bit higher than other products in the market, but you will receive ten out of ten support with next-business-day delivery on parts' availability."

"The pricing is cost-effective for the solution"

"We usually buy products at the end year, and the license is included."

"The price is on the high side."

"It could be more competitively priced. Its licensing was for five years. Obviously, the support will get renewed at some stage, but that's it."

More Dell PowerProtect Data Domain pricing and cost advice

"I do not oversee this aspect, as pricing is contingent on factors such as volume, technical specifications, and the desired features. Consequently, I lack information on the pricing details and structure."

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Top Industries

By visitors reading reviews

Computer Software Company

12%

Financial Services Firm

10%

Manufacturing Company

10%

Government

Financial Services Firm

26%

Computer Software Company

11%

Manufacturing Company

Government

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	35
Midsize Enterprise	23
Large Enterprise	37

No data available

Questions from the Community

What is your primary use case for Dell EMC PowerProtect DD (Data Domain)?

My use cases for it involve primarily backing up the on-premises servers, and besides that, we also provision CIFS shares and NFS exports on Dell PowerProtect Data Domain.

See all answers

What do you like most about Dell PowerProtect DD (Data Domain)?

The product, a disk backup solution, improves our data application tasks. We used tape libraries with Dev drives in legacy architectures, resulting in slow backups compared to modern drives like NV...

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What is your experience regarding pricing and costs for Dell PowerProtect DD (Data Domain)?

I purchased Dell PowerProtect Data Domain through a local partner.

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Comparisons

HPE StoreOnce vs Dell PowerProtect Data Domain

Compared 27% of the time

Rubrik vs Dell PowerProtect Data Domain

Compared 8% of the time

Dell PowerProtect Data Manager vs Dell PowerProtect Data Domain

Compared 6% of the time

Veeam Data Platform vs Dell PowerProtect Data Domain

Compared 5% of the time

Veritas NetBackup Appliance vs Dell PowerProtect Data Domain

Compared 3% of the time

More Dell PowerProtect Data Domain Competitors

ExaGrid EX Series vs Quantum DXi Series

Compared 15% of the time

HPE StoreOnce vs Quantum DXi Series

Compared 14% of the time

Commvault Cloud vs Quantum DXi Series

Compared 6% of the time

ExaGrid EX vs Quantum DXi Series

Compared 6% of the time

Veritas NetBackup Appliance vs Quantum DXi Series

Compared 6% of the time

More Quantum DXi Series Competitors

Product Reports

Buyer's Guide

Dell PowerProtect Data Domain

January 2026

Download Dell PowerProtect Data Domain product report

Buyer's Guide

Backup and Recovery

January 2026

Download Quantum DXi Series product report

Also Known As

DataDomain, Dell EMC Data Domain, PowerProtect Data Domain

DXi Series, Quantum DX

Overview

Dell PowerProtect Data Domain is the leading backup appliance built for powerful cyber resilience and seamless integration into on-premises environments. It supports both traditional and modern workloads, simplifying operations while reducing risks and costs.

Dell PowerProtect Data Domain offers scalable storage capabilities that integrate smoothly with backup systems. Its deduplication and compression technologies enhance storage efficiency by significantly reducing data volumes. Users appreciate its secure data protection, excellent deduplication and compression, efficient data replication, and the DD Boost protocol for faster data transfer. However, feedback suggests improvements are needed in areas like complex VTL tape addition, high pricing, and challenging cloud integration. The implementation may benefit from boosted processing power and enhanced ransomware protection.

What are the key features of Dell PowerProtect Data Domain?

Deduplication and Compression: Significantly reduces data volumes, optimizing storage usage.
Efficient Data Replication: Enhances data protection by securely transferring data across locations.
DD Boost Protocol: Promotes faster data transfer, streamlining backup processes.
Scalable Storage: Adapts to varying data capacities, ensuring growth accommodation.
Secure Data Protection: Safeguards data with robust encryption and protection features.

What benefits should be expected from Dell PowerProtect Data Domain?

Space and Cost Savings: Achieves reductions in data footprint, lowering storage expenses.
Reliable Backup and Recovery: Provides consistent and fast data backup and restoration capabilities.
Seamless Integration: Operates smoothly with existing backup software and environments.
Data Security: Offers comprehensive data protection to ensure business continuity.

Dell PowerProtect Data Domain is widely employed across various sectors like banking, finance, and government for its backup, deduplication, and archiving functions. Organizations utilize it with software like Veeam and NetWorker to optimize bandwidth, manage large data capacities, and deliver secure, reliable backup features, supporting both on-premises and hybrid deployments.

Dell Technologies

Quantum's DXi series deduplication solutions provides patented variable-length deduplication that not only reduces disk usage and capital expenditures, but also enables efficient data movement across the WAN to other sites and to the cloud.

Quantum

Sample Customers

The US Army, City of Houston, Lloyds TSB, TiVo, Teck, Ingram Entertainment, The New York Mets

Nihon Unisys, Nikoyo China

Buyer's Guide

Dell PowerProtect Data Domain vs. Quantum DXi Series

December 2025

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