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Dell PowerProtect Data Domain vs Quantum DXi Series comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Feb 8, 2026

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
6.6
Number of Reviews
99
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
2
Ranking in other categories
Backup and Recovery (61st)
 

Mindshare comparison

As of June 2026, in the Deduplication Software category, the mindshare of Dell PowerProtect Data Domain is 20.9%, down from 28.3% compared to the previous year. The mindshare of Quantum DXi Series is 4.8%, up from 3.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Deduplication Software Mindshare Distribution
ProductMindshare (%)
Dell PowerProtect Data Domain20.9%
Quantum DXi Series4.8%
Other74.3%
Deduplication Software
 

Featured Reviews

Branko Cirovic - PeerSpot reviewer
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.
reviewer2301564 - PeerSpot reviewer
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.

Quotes from Members

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

Pros

"It was the first VTL we used for customers and because of its function and uptime we can’t see a reason to change to another vendor."
"It works within backup windows and has got good deduplication."
"What I appreciate about Dell PowerProtect Data Domain is that the deduplication is quite good and it simply works."
"The solution's most valuable feature is the integrated deduplication function."
"The compatibility within the Dell PowerProtect DD portfolio makes data management more seamless. This integrated solution improves efficiency in our data center and simplifies operations by relying on a single company for servers and storage."
"Fast backup for complex and huge size data."
"In every instance where we've proposed and won a project based on PowerProtect, the customers have been highly satisfied and confident in their backup processes."
"This is a superior and reliable backup system that can handle large capacities with little management."
"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 is on the high side."
"Technical Support: Bad. The service left much to be desired, even with the proper support."
"Maybe the price is an area for improvement in Dell PowerProtect Data Domain."
"Data Domain lacks compatibility with fiber channels and tapes. We can't use it with a tape library."
"Dell EMC PowerProtect DD (Data Domain) is not a product that's easy to install by customers."
"One improvement to the solution would be in the integration with backup software. They still have hardware different from the software."
"They need to make migration easier."
"The pricing could be lower."
"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 price of Dell EMC PowerProtect DD could improve, it is expensive."
"Dell PowerProtect DD's pricing is expensive, and there is no option for perpetual licensing."
"The cost is expensive."
"If we do not move to the cloud solution and stay with our on-premise version we will miss some new features."
"The price of the backup appliance is slightly expensive. Compared to other vendors, the pricing will be slightly higher."
"The product is expensive."
"In Naira it was twenty-five or twenty-seven million (approximately $75,000 USD) for the implementation and maintenance cost for three years."
"The approximate license cost for Dell PowerProtect DD (Data Domain) is around 5,00,000."
"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
Manufacturing Company
10%
Financial Services Firm
10%
Computer Software Company
9%
Government
6%
Financial Services Firm
15%
Manufacturing Company
9%
Computer Software Company
9%
Retailer
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business39
Midsize Enterprise25
Large Enterprise44
No data available
 

Questions from the Community

What is your primary use case for Dell EMC PowerProtect DD (Data Domain)?
My main use case for Dell PowerProtect Data Domain is as a data backup target.
What is your experience regarding pricing and costs for Dell PowerProtect DD (Data Domain)?
Pricing, setup cost, and licensing are not my areas of expertise, as I mainly focus on implementation engineering.
What needs improvement with Dell PowerProtect DD (Data Domain)?
To improve Dell PowerProtect Data Domain, I would suggest making it cheaper. I would like to see the ability to use more back end data ports as a new feature.
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Also Known As

DataDomain, Dell EMC Data Domain, PowerProtect Data Domain
DXi Series, Quantum DX
 

Overview

 

Sample Customers

The US Army, City of Houston, Lloyds TSB, TiVo, Teck, Ingram Entertainment, The New York Mets
Nihon Unisys, Nikoyo China
Find out what your peers are saying about Dell PowerProtect Data Domain vs. Quantum DXi Series and other solutions. Updated: June 2026.
900,747 professionals have used our research since 2012.