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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
11th
Average Rating
9.6
Reviews Sentiment
7.7
Number of Reviews
2
Ranking in other categories
Backup and Recovery (61st)
 

Mindshare comparison

As of July 2026, in the Deduplication Software category, the mindshare of Dell PowerProtect Data Domain is 20.6%, down from 28.2% compared to the previous year. The mindshare of Quantum DXi Series is 4.8%, up from 3.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Deduplication Software Mindshare Distribution
ProductMindshare (%)
Dell PowerProtect Data Domain20.6%
Quantum DXi Series4.8%
Other74.6%
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

"Dell is more stable than any other device."
"The major features of Dell PowerProtect Data Domain are that it is ready to use directly, provides deduplication and compression which significantly reduce storage requirements for backups and save capacity, and offers disaster recovery with two-sided replication so you can restart everything from the DR site while integrating with virtually any backup solution."
"Stable and scalable suite of solutions with deduplication, apart from data protection, storage, and backup."
"What I appreciate about Dell PowerProtect Data Domain is that the deduplication is quite good and it simply works."
"I have been using Dell PowerProtect Data Domain for three years and a half, and it has delivered excellent reliability and deduplication efficiency and backup performance."
"Fantastic product that really is the ‘Swiss Army Knife’ of backup/archive/bulk storage products, so usable and can save significant $ and can save many headaches with data management, the more you store on it the better De-duplication and greater ROI you get."
"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."
"PowerProtect is a flexible solution that you can cover various cloud and on-premise environments."
"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

"I would like them to improve on the short backup window as it would make my organization even more efficient."
"The Data Domain solution appliance is quite expensive. It is on the higher side, but technically or functionally, there is no issue."
"The cost could be lower. Sometimes it's not very competitive."
"The aspect we do not enjoy the most about Dell PowerProtect Data Domain is the staging configuration."
"They should reduce the CPC cost to customers. The product is becoming very expensive."
"Without a service account manager after the initial deployment, the support is poor."
"The pricing model needs to be improved."
"There is an inconsistency in support quality for Dell PowerProtect DD"
"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

"I can't remember what the license costs are. They might be paid monthly or every two months."
"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 price of the backup appliance is slightly expensive. Compared to other vendors, the pricing will be slightly higher."
"Users have to pay a capacity-based licensing fee for the solution."
"This is one of the more expensive backup solutions on the market."
"The price of Dell EMC PowerProtect DD could improve, it is 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."
"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."
"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%
Computer Software Company
9%
Manufacturing Company
9%
Comms Service Provider
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.
905,526 professionals have used our research since 2012.