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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
109
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 (59th)
 

Mindshare comparison

As of November 2026, in the Deduplication Software category, the mindshare of Dell PowerProtect Data Domain is 21.2%, down from 26.6% compared to the previous year. The mindshare of Quantum DXi Series is 4.5%, up from 4.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Deduplication Software Mindshare Distribution
ProductMindshare (%)
Dell PowerProtect Data Domain21.2%
Quantum DXi Series4.5%
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's very competitive in terms of the price and technology. Also, the development team continuously makes updates. The data reduction feature is very useful."
"The most valuable features of PowerProtect DD are the immutable storage and the AI scanning."
"The features of Dell PowerProtect Data Domain that I value the most include the simplicity of deployment, which is one key feature, and the data reduction we achieve on our appliances compared to other solutions."
"The solution is stable and the performance is good, there are no bugs or glitches, and it doesn't crash or freeze."
"Dell PowerProtect Data Domain has impacted my organization positively because most of my use cases are required, so it is useful for my organization."
"At the end of the day, we feel comfortable with the backups and the security that the product provides us, and we have not had any issues with it for eight years."
"We have never had any issues with Data Domain. It has been stable."
"The most valuable features of Dell PowerProtect DD are reduplication and compression. It provides a lot of data savings for backups. Additionally, the Dell PowerProtect DD solution offers a bundled backup software and storage option. If desired, users can also connect to cloud technology to create an additional copy of their data in the cloud. This solution supports synchronization with various cloud vendors, including Azure and AWS."
"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

"From a pricing perspective, it is quite high and very costly compared to other storage or backup solutions."
"There is an inconsistency in support quality for Dell PowerProtect DD"
"The product lacks some security features that would make it more stand-alone and integrated."
"My impression of customer service is that it sometimes could be better."
"Without a service account manager after the initial deployment, the support is poor."
"Each solution has its pros and cons regarding Dell PowerProtect Data Domain. Regarding the cons, it has high licensing and expansion costs."
"I would like to see better integration and support for backing up to cloud providers such as Alibaba Cloud."
"We have some problems with backing up on the Power Platform. PowerServer is an IBM product, and it forces us to back up over LAN, which is not suitable for us."
"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

"If we do not move to the cloud solution and stay with our on-premise version we will miss some new features."
"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 can't remember what the license costs are. They might be paid monthly or every two months."
"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 is really high compared to other vendors. The licensing cost is huge. Normal, mid-tier companies or small-scale companies wouldn't be able to afford it easily."
"It is expensive, but the performance and deduplication cover for the cost."
"The cheaper device costs around $70,000."
"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%
Outsourcing Company
10%
Manufacturing Company
9%
Comms Service Provider
7%
Financial Services Firm
13%
Comms Service Provider
9%
Manufacturing Company
9%
Retailer
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business41
Midsize Enterprise27
Large Enterprise50
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.
Ask a question
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: November 2026.
920,929 professionals have used our research since 2012.