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Dell PowerProtect Data Domain vs Quantum DXi Series comparison

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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
108
Ranking in other categories
Disk Based Backup Systems (1st)
Quantum DXi Series
Ranking in Deduplication Software
10th
Average Rating
9.6
Reviews Sentiment
7.7
Number of Reviews
2
Ranking in other categories
Backup and Recovery (61st)
 

Mindshare comparison

As of October 2026, in the Deduplication Software category, the mindshare of Dell PowerProtect Data Domain is 20.6%, down from 27.2% compared to the previous year. The mindshare of Quantum DXi Series is 4.6%, up from 4.0% 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 Series4.6%
Other74.8%
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

"Regarding advice for others looking to implement this product, I highly recommend Dell PowerProtect Data Domain."
"There was an eighty percent improvement with EMC Data Domain."
"We have found the product to be scalable."
"The most beneficial features in the product are compatibility, which is the most valuable function; the compression factor is very good, the solution is user-friendly, and single-click operations are also a key feature."
"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 NVMe and SSDs. By transitioning to NVMe and SSDs, backups have become much faster. The tool's backup restoration is faster compared to other tools."
"Data Domain deduplication is excellent."
"The solution is very scalable."
"I like the different features. We work closely with Dell on different products and features, which is why we use them all."
"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 pricing model needs to be improved."
"Installation and deployment for this product need improvement. These processes need to made easier. Currently, it's not an easy installation for customers. This product needs to be installed by professionals."
"Dell PowerProtect Data Domain can be improved by enhancing the maximum allowed capacity."
"I need them to add the air-gapped technology to Dell PowerProtect Data Domain, as some other vendors have."
"The only problem is that it's more expensive than any other vendors available in the market."
"We are using technical support from the producers, and it is not good. I'm not happy with the technical support."
"There is a challenge when it comes to data recovery; the recovery window can exceed four to eight hours if you're dealing with backups older than five or ten years."
"DD Boost."
"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

"Dell PowerProtect DD's pricing is expensive, and there is no option for perpetual licensing."
"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."
"I can't remember what the license costs are. They might be paid monthly or every two months."
"The price of Dell EMC PowerProtect DD could improve, it is expensive."
"This is one of the more expensive backup solutions on the market."
"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."
"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."
"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%
Outsourcing Company
9%
Manufacturing Company
9%
Computer Software Company
7%
Financial Services Firm
14%
Computer Software Company
8%
Comms Service Provider
8%
Manufacturing Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business41
Midsize Enterprise27
Large Enterprise49
No data available
 

Questions from the Community

What is your primary use case for Dell EMC PowerProtect DD (Data Domain)?
Dell PowerProtect Data Domain is primarily used in my organization for disk backups. We use it for production systems so that we have a backup and can make use of other devices where the VTL handle...
What is your experience regarding pricing and costs for Dell PowerProtect DD (Data Domain)?
I have not had access to the costs of Dell PowerProtect Data Domain, so I could not tell you how my experience has been with the licensing, installation, and pricing costs.
What needs improvement with Dell PowerProtect DD (Data Domain)?
I think Dell PowerProtect Data Domain could be improved in terms of the integration with VTL, as I would like it to be a bit more accessible.
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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: September 2026.
917,884 professionals have used our research since 2012.