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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
102
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 (60th)
 

Mindshare comparison

As of August 2026, in the Deduplication Software category, the mindshare of Dell PowerProtect Data Domain is 20.3%, down from 28.1% compared to the previous year. The mindshare of Quantum DXi Series is 4.7%, 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 Domain20.3%
Quantum DXi Series4.7%
Other75.0%
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

"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."
"Dell is more stable than any other device."
"I like Data Domain as a protocol for data backup."
"The solution can scale up to one petabyte right now. It's very good for enterprise-level organizations."
"The integration of Dell PowerProtect DD (Data Domain) with leading backup applications within the infrastructure is very good."
"It makes working with backup solutions very easy."
"Our clients like the wide range of features that are available within this single solution."
"The licensing model is the most valuable aspect of Dell PowerProtect DD"
"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."
"I am impressed with the tool's technical alliance with Veeam and Veritas."
 

Cons

"The price for PowerProtect DD is not suitable for my customers. It is very high."
"Technical support needs improvement."
"I would like them to improve on the short backup window as it would make my organization even more efficient."
"It can be complex to implement."
"While Data Domain is a good product, it doesn't fit every case, as customer requirements vary."
"We are using technical support from the producers, and it is not good. I'm not happy with the technical support."
"The solution could adjust the size of the discs."
"From a technical point of view, all EMC products have to improve the troubleshoot feature like, log should be in human readable format."
"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 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."
"If we do not move to the cloud solution and stay with our on-premise version we will miss some new features."
"Its price is reasonable."
"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 is on the high side."
"This is one of the more expensive backup solutions on the market."
"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
Financial Services Firm
10%
Manufacturing Company
9%
Computer Software Company
8%
Outsourcing Company
7%
Financial Services Firm
14%
Computer Software Company
9%
Manufacturing Company
8%
Comms Service Provider
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business40
Midsize Enterprise27
Large Enterprise44
No data available
 

Questions from the Community

What is your primary use case for Dell EMC PowerProtect DD (Data Domain)?
I use Dell PowerProtect Data Domain for backup storage and target storage backup.
What needs improvement with Dell PowerProtect DD (Data Domain)?
The only improvement I see for Dell PowerProtect Data Domain is pricing. The issue I experienced is primarily with support rather than the product itself. The product is rugged and runs smoothly, b...
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Earn 20 points
 

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: August 2026.
909,948 professionals have used our research since 2012.