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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
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 September 2026, in the Deduplication Software category, the mindshare of Dell PowerProtect Data Domain is 20.5%, down from 27.4% compared to the previous year. The mindshare of Quantum DXi Series is 4.6%, 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 Domain20.5%
Quantum DXi Series4.6%
Other74.9%
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

"The solution is very scalable."
"We have never had any issues with Data Domain. It has been stable."
"My advice about Dell PowerProtect Data Domain is straightforward: I recommend this product to all clients, because it provides the best deduplication, compression, and security."
"It is stable. I would rate the stability of the solution a nine out of ten."
"The DD Boost protocol is very fast in backup and while data is being transferred to Dell PowerProtect Data Domain, and I am using the immutability features built in so that the backup copies are immutable and no one can edit or delete them anymore unless the retention period is over."
"Dell PowerProtect Data Domain impacts my organization positively by helping ensure that all of our credit card application data is backed up securely and allowing us to make sure that we are able to store all of that data and meet all of our compliance requirements."
"Regarding advice for others looking to implement this product, I highly recommend Dell PowerProtect Data Domain."
"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."
"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 could be lower."
"When you use Data Domain, you have to have at least 20% free space so it can work properly. Sometimes we struggle with that, because we wanted to use all the free space, but then Data Domain becomes really slow. I understand that 20% is needed to process all the data, and doing the duplication and compression and all that, but it would be a big improvement if they did not require that 20%, because it is just too much to have available."
"The price could be improved."
"We encountered data loss during the configuration process."
"The software from Dell that can be used to operate Data Domain needs to have enhancements made to the user interface. It is too complex."
"Without a service account manager after the initial deployment, the support is poor."
"The price is also a disadvantage. Price is a disadvantage with the PowerProtect as it needs to be cheaper."
"Dell PowerProtect DD does not have integration with the cloud and virtualization software."
"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

"It is expensive, but the performance and deduplication cover for the cost."
"I can't remember what the license costs are. They might be paid monthly or every two months."
"The price of the solution and support for Dell PowerProtect DD is expensive. We have customers that cannot upgrade to a newer version of the solution because the support is too expensive."
"The cost is expensive."
"The cheaper device costs around $70,000."
"The price is on the high side."
"In Naira it was twenty-five or twenty-seven million (approximately $75,000 USD) for the implementation and maintenance cost for three years."
"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."
"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%
Outsourcing Company
9%
Computer Software Company
7%
Financial Services Firm
14%
Computer Software Company
9%
Manufacturing Company
9%
Comms Service Provider
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)?
My main use case for Dell PowerProtect Data Domain is backup. We utilize it to back up all of our data from our credit card domain application.
What is your experience regarding pricing and costs for Dell PowerProtect DD (Data Domain)?
My experience with pricing, setup cost, and licensing is adequate; Dell is not the cheapest, but it is also not the most expensive.
What needs improvement with Dell PowerProtect DD (Data Domain)?
To improve Dell PowerProtect Data Domain, I would suggest that we take a look at how we also store AI data as needed.
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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.
914,805 professionals have used our research since 2012.