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

"Its pricing is not overly expensive."

"When utilizing Dell PowerProtect DD for backup systems, Data Domain offers fast performance with low latency, providing high throughput for quicker backups compared to other vendors."

"Data Domain is an excellent repository that's compatible with a lot of different solutions. Even Veeam Backup recommends sending backup to Data Domain. Space optimization is great. Currently, it guarantees 50-to-1 compression of the application in the same device. In all these years, I never had a client who was unsatisfied with Data Domain. It is a solid appliance with VMware integration, instant access to restore and search, and analytics."

"The most valuable features of PowerProtect DD are the immutable storage and the AI scanning."

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

"The solution is very stable."

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

"The most valuable features of the solution are recovery point, compression, and deduplication."

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

"The price for PowerProtect DD is not suitable for my customers. It is very high."

"The price is also a disadvantage. Price is a disadvantage with the PowerProtect as it needs to be cheaper."

"The tool's DD Boost is expensive."

"Dell PowerProtect DD does not have integration with the cloud and virtualization software."

"The price could be improved."

"The Data Domain solution appliance is quite expensive. It is on the higher side, but technically or functionally, there is no issue."

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

"Dell PowerProtect DD could improve by having better integration with other backup solutions."

More Dell PowerProtect Data Domain cons

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

"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."

Pricing and Cost Advice

"Its price is reasonable."

"The pricing is cost-effective for the solution"

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

"If we do not move to the cloud solution and stay with our on-premise version we will miss some new features."

"Pricing is related to size. A lower range solution might be about $33,000. My customers use higher range versions with a price of around $100,000. That's the price for both the hardware and software."

"The cheaper device costs around $70,000."

"The price of the backup appliance is slightly expensive. Compared to other vendors, the pricing will be slightly higher."

"The cost is expensive."

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

24%

Computer Software Company

12%

Manufacturing Company

Retailer

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

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 11% of the time

HPE StoreOnce 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 5% of the time

Veeam Data Platform vs Quantum DXi Series

Compared 5% 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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