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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

"We never go without Data Domain if we are talking about backup solutions; we always go with Data Domain, as it's a very reliable and consistent product and there's no match with any other product."
"The dedup and data compression actually benefit our floor space in the data center, and we are able to reduce our backup storage, which used to be a legacy large footprint, into something more concise."
"By using Data Domain, we get the advantage of data deduplication, reducing data size."
"The solution syncs immediately."
"The advice I would give to other organizations considering Dell PowerProtect Data Domain is that adopting this modern data protection solution is necessary; it's the difference between being attacked or having specific solutions to defend what is most important for the customer, which is the information."
"It securely protects data against threats like Trojans."
"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."
"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

"They should reduce the CPC cost to customers. The product is becoming very expensive."
"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."
"The cost could be lower. Sometimes it's not very competitive."
"The Dell PowerProtect DD architecture offers several significant features. One is DD Boost, which is utilized at both the source and destination sites for application processing."
"Technical Support: Bad. The service left much to be desired, even with the proper support."
"I would like to see better integration and support for backing up to cloud providers such as Alibaba Cloud."
"From a technical point of view, all EMC products have to improve the troubleshoot feature like, log should be in human readable format."
"We have had deduplication and replication issues. When we used another backup software we noticed that it didn't have the same issues."
"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 cheaper device costs around $70,000."
"This is one of the more expensive backup solutions on the market."
"Becoming more expensive."
"Users have to pay a capacity-based licensing fee for the solution."
"The price of Dell EMC PowerProtect DD could improve, it is expensive."
"The price is on the high side."
"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."
"In Naira it was twenty-five or twenty-seven million (approximately $75,000 USD) for the implementation and maintenance cost for three years."
"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.