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 8.8, while Quantum is ranked #12. Dell Technologies holds a 24.7% mindshare in DS, compared to Quantum’s 4.6% 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 87 Dell PowerProtect Data Domain reviews

10,864 Views
6,192 Comparison Views

90% willing to recommend

Quantum DXi Series

Read 2 Quantum DXi Series reviews

1,770 Views
743 Comparison Views

66% willing to recommend

Dell PowerProtect Data Domain

Quantum DXi Series

Comparison Buyer's Guide

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Executive SummaryUpdated on Feb 8, 2026

Dell PowerProtect Data Domain and Quantum DXi Series compete in data protection and backup solutions. Dell PowerProtect Data Domain has the upper hand due to its advanced integration, scalability, and extensive feature set.

Features: Dell PowerProtect Data Domain offers high deduplication ratios, efficient storage utilization, and robust cloud tiering. Quantum DXi Series emphasizes streamlined data retrieval, high-speed backup processes, and effective deduplication and compression.

Ease of Deployment and Customer Service: Dell PowerProtect Data Domain provides a comprehensive support network and detailed deployment resources, beneficial for complex integration in large-scale environments. Quantum DXi Series offers a straightforward deployment process suited for smaller operations with quicker initial setup times.

Pricing and ROI: Dell PowerProtect Data Domain features a higher setup cost but offers high scalability and flexibility, leading to a significant ROI for large enterprises. Quantum DXi Series has a lower initial cost, appealing to smaller businesses focused on cost-efficiency.

To learn more, read our detailed Dell PowerProtect Data Domain vs. Quantum DXi Series Report (Updated: February 2026).

Buyer's Guide

Dell PowerProtect Data Domain vs. Quantum DXi Series

February 2026

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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 February 2026, in the Deduplication Software category, the mindshare of Dell PowerProtect Data Domain is 24.7%, down from 28.8% compared to the previous year. The mindshare of Quantum DXi Series is 4.6%, up from 3.4% 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	24.7%
Quantum DXi Series	4.6%
Other	70.7%

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's deduplication and faster recovery that are the key features."

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

"The most important feature is the level of data compression provided by Dell EMC. It's a leader in data compression and deduplication, and the level of compression isn't available with any other vendors in the market."

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

"The feature that I have found most useful is its data duplication."

"The most valuable features of Dell EMC PowerProtect DD are the duplication security and uptime."

"It is a stable solution."

"This is a superior and reliable backup system that can handle large capacities with little management."

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

"One of the areas we are looking at is interconnects for Dell PowerProtect Data Domain."

"The initial setup is complex."

"Dell PowerProtect DD (Data Domain) is expensive. Also, it has a sort of a big physical footprint that data domains have, and that's part of the problem."

"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 price is quite high; this product is not considered cheap."

"Technical support needs improvement."

"From a pricing perspective, it is quite high and very costly compared to other storage or backup solutions."

"I would like to see better integration and support for backing up to cloud providers such as Alibaba Cloud."

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

"Dell PowerProtect DD's pricing is expensive, and there is no option for perpetual licensing."

"The cost is expensive."

"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."

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

"The price of the solution and support for Dell PowerProtect DD is expensive. We have customers that cannot upgrade to a newer version of the solution because the support is too expensive."

"Pricing for this product could still be improved, though several years ago, its price was very high. When buying an IDPA product such as Dell EMC PowerProtect DD (Data Domain), you don't have to buy anything else, because you'll have an integrated solution: a data domain appliance plus software."

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

"On a scale where one represents high price, and ten represents low price, I rate the solution a five, which means that the solution is of medium pricing."

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

11%

Financial Services Firm

10%

Manufacturing Company

10%

Government

Financial Services Firm

21%

Computer Software Company

12%

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	38

No data available

Questions from the Community

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

I work as an implementer of Dell PowerProtect Data Domain systems, storage, and backup systems, serving as an administrator and support specialist. I have 15 years of experience implementing Data D...

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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)?

Regarding the pricing for Dell PowerProtect Data Domain, it is expensive. For small clients, it is very expensive. Large clients find it not expensive, but it depends on the solution in the environ...

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Comparisons

HPE StoreOnce vs Dell PowerProtect Data Domain

Compared 29% of the time

Rubrik vs Dell PowerProtect Data Domain

Compared 8% of the time

Dell PowerProtect Data Manager vs Dell PowerProtect Data Domain

Compared 5% of the time

Veeam Data Platform vs Dell PowerProtect Data Domain

Compared 5% of the time

Cohesity DataProtect vs Dell PowerProtect Data Domain

Compared 3% of the time

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HPE StoreOnce vs Quantum DXi Series

Compared 10% of the time

ExaGrid EX Series vs Quantum DXi Series

Compared 10% of the time

ExaGrid EX vs Quantum DXi Series

Compared 5% of the time

Veritas NetBackup Appliance vs Quantum DXi Series

Compared 4% of the time

Veeam Data Platform vs Quantum DXi Series

Compared 4% of the time

More Quantum DXi Series Competitors

Product Reports

Buyer's Guide

Dell PowerProtect Data Domain

February 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

February 2026

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