Dell PowerProtect Data Domain vs HPE StoreOnce comparison

Dell Technologies and Hewlett Packard Enterprise are both solutions in the Deduplication Software category. Dell Technologies is ranked #1 with an average rating of 8.8, while Hewlett Packard Enterprise is ranked #2 with an average rating of 7.7. Dell Technologies holds a 26.2% mindshare in DS, compared to Hewlett Packard Enterprise’s 17.6% mindshare. Additionally, 89% of Dell Technologies users are willing to recommend the solution, compared to 93% of Hewlett Packard Enterprise users who would recommend it.

Dell PowerProtect Data Domain

Read 83 Dell PowerProtect Data Domain reviews

10,565 Views
5,916 Comparison Views

89% willing to recommend

HPE StoreOnce

Read 108 HPE StoreOnce reviews

6,940 Views
3,539 Comparison Views

93% willing to recommend

Dell PowerProtect Data Domain

HPE StoreOnce

Comparison Buyer's Guide

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Executive SummaryUpdated on Nov 5, 2025

HPE StoreOnce and Dell PowerProtect Data Domain compete in the data storage and backup category, focusing on deduplication and replication. Both solutions excel in different aspects, but StoreOnce shows flexibility with its deduplication locations, while Data Domain's DD Boost technology provides advanced integration capabilities with backup software.

Features: HPE StoreOnce offers a highly flexible deduplication process that can be performed at the client, backup appliance, or media servers, catering to various infrastructure needs. Its integration with HPE solutions makes it an ideal choice for existing HPE environments. Additionally, StoreOnce supports federated deduplication, enabling a seamless backup experience. Dell PowerProtect Data Domain offers DD Boost technology, enhancing source-side deduplication performance and integrating well with various backup solutions like NetWorker and Avamar. Its data management features provide robust, comprehensive backup capabilities, and the appliance allows for secure, fast data transfers through its DD Boost feature.

Room for Improvement: HPE StoreOnce can improve its deduplication algorithms and third-party application integration. Users have reported the need for better reporting features and a more intuitive user interface. Dell PowerProtect Data Domain faces challenges with a high pricing model and limited integration with some cloud solutions. There are also calls for better deduplication and compression capabilities and the inclusion of more advanced security features to protect against cyber threats.

Ease of Deployment and Customer Service: HPE StoreOnce users value its strong technical support and responsive customer service. However, the deployment process can be complicated, often requiring knowledgeable staff. Dell PowerProtect Data Domain is also praised for its customer support but is noted for a complex setup that typically requires professional assistance. Both solutions offer a variety of deployment options, but Data Domain might have a slight edge in usability after deployment.

Pricing and ROI: HPE StoreOnce is perceived to have high initial pricing, but its overall cost of ownership is competitive due to its low operational costs and seamless integration with other HPE solutions. Licensing options are comprehensive, offering flexibility for various enterprise configurations. Dell PowerProtect Data Domain's premium pricing is balanced by its strong performance and advanced deduplication, with ROI deemed favorable over time. Users of both solutions suggest that improved cost-effectiveness is necessary to compete with newer market entrants.

To learn more, read our detailed Dell PowerProtect Data Domain vs. HPE StoreOnce Report (Updated: December 2025).

Buyer's Guide

Dell PowerProtect Data Domain vs. HPE StoreOnce

December 2025

Download the complete report

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Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:

ROI

Sentiment score

6.6

Dell PowerProtect Data Domain excels in reducing costs and storage needs, optimized for large enterprises with significant data demands.

Sentiment score

7.2

HPE StoreOnce enhances cost efficiency, speeds restores, and offers scalability, leading to generally high user satisfaction despite varied ROI.

One is less floor space in the data center and the ability to pack more data into the backup storage on Dell PowerProtect Data Domain as compared to the traditional backup storage.

reviewer2776245

Vice President - Information Technology Systems Engineering at a tech vendor with 10,001+ employees

The best part is the compression and deduplication feature.

Pranav-Telang

Lead Architect at a comms service provider with 10,001+ employees

I find it cost-effective, and it does bring the return on investment.

Kuntal Malik

lead at Boston Scientific

For more quotes and insights, download the Dell PowerProtect Data Domain report

If we request the price for StoreOnce as a standalone product, it tends to be higher than when it is included in a larger solution where we can receive better discounts.

Naguib Wasef

HPE Product Manager at a tech services company with 51-200 employees

For more quotes and insights, download the HPE StoreOnce report

Customer Service

Sentiment score

7.2

Dell PowerProtect Data Domain customer service is praised for efficiency and responsiveness, despite some regional and response time inconsistencies.

Sentiment score

7.6

HPE StoreOnce customer service is highly regarded for its responsiveness, knowledgeable staff, reliable service, and flexible support offerings.

They respond within 24 hours of case submission, which is crucial for maintaining the solution.

reviewer1144389

Sr System Expert at a healthcare company with 10,001+ employees

I have dedicated support from Dell for Vietnam, and they are responsive.

Triet Pham

Information Technology Technician at Lac Viet Computing

I have encountered an issue before with other brands that would not have occurred with Dell.

Mohamed Abdel Salam

Senior Sells at Enterprise Sigma Technology

For more quotes and insights, download the Dell PowerProtect Data Domain report

HPE's support is very good, proactive, and monitored through InfoSight.

Andrew Mcbeath

Technical Director of Managed IT Division at base2

When we open a case for support during installation or other matters, they are always timely and provide full support.

Naguib Wasef

HPE Product Manager at a tech services company with 51-200 employees

For more quotes and insights, download the HPE StoreOnce report

Scalability Issues

Sentiment score

6.8

Dell PowerProtect Data Domain offers scalable storage, supports cloud expansion, efficiently uses space, and is easy for administrators to manage.

Sentiment score

7.4

HPE StoreOnce is scalable for enterprises, though some models require planning due to capacity limits and additional licensing.

The scalability depends on the IT department's strategy.

reviewer1144389

Sr System Expert at a healthcare company with 10,001+ employees

Dell PowerProtect Data Domain is very scalable; it expands easily with new enclosures.

Branko Cirovic

Storage Engineer at Comtrade Group

Dell PowerProtect Data Domain can scale up horizontally to meet the growing needs of our organization.

Kuntal Malik

lead at Boston Scientific

For more quotes and insights, download the Dell PowerProtect Data Domain report

The ability of HPE StoreOnce to scale is strong when more sizing options are available.

Naguib Wasef

HPE Product Manager at a tech services company with 51-200 employees

The scalability of HPE StoreOnce is very good.

Andrew Mcbeath

Technical Director of Managed IT Division at base2

For more quotes and insights, download the HPE StoreOnce report

Stability Issues

Sentiment score

8.2

Dell PowerProtect Data Domain is praised for stability, reliability, quick recovery from failures, and efficient data replication.

Sentiment score

7.7

HPE StoreOnce is highly stable with consistent performance, rare issues swiftly resolved, and reliability improving with newer models.

We have never encountered issues such as data corruption with these systems.

Branko Cirovic

Storage Engineer at Comtrade Group

I have not experienced any downtime, crashes, or performance issues with it.

Eng_MIR

IT Infrastructure and Telecom TL at a construction company with 51-200 employees

Dell is especially more stable in the enterprise product.

Mohamed Abdel Salam

Senior Sells at Enterprise Sigma Technology

For more quotes and insights, download the Dell PowerProtect Data Domain report

For the stability of HPE StoreOnce, based on customer feedback, I rate it highly as one of the most stable products in the backup and archiving line.

Naguib Wasef

HPE Product Manager at a tech services company with 51-200 employees

For more quotes and insights, download the HPE StoreOnce report

Room For Improvement

Enhancements needed in Dell PowerProtect Data Domain include pricing, installation, interface, support, cloud integration, deduplication, and ransomware protection.

Users seek improved deduplication, integration, interface, setup, support, storage, performance, pricing, and cloud features in HPE StoreOnce.

Local support must be available in the country.

A. AhadAlam

Head Of Systems Group at NCCPL

We can leverage writing NAS level backup into Dell PowerProtect Data Domain rather than utilizing any other software tools such as Networker.

reviewer2776245

Vice President - Information Technology Systems Engineering at a tech vendor with 10,001+ employees

Dell PowerProtect Data Domain represents the fastest and most reliable solution, ensuring great integration with backup software.

Branko Cirovic

Storage Engineer at Comtrade Group

For more quotes and insights, download the Dell PowerProtect Data Domain report

It is well-positioned on the radar, with a mature and stable solution.

reviewer2612268

Infrastructure Manager at a paper AND forest products with 10,001+ employees

The benefits of StoreOnce, which we discussed, include its compression capabilities with a ratio of 1 to 10.

Naguib Wasef

HPE Product Manager at a tech services company with 51-200 employees

While the solution does everything expected, it would be beneficial if AI could be integrated for optimization and monitoring.

Andrew Mcbeath

Technical Director of Managed IT Division at base2

For more quotes and insights, download the HPE StoreOnce report

Setup Cost

Dell PowerProtect Data Domain is expensive for small firms but valued by enterprises for performance, despite rising post-2023 costs.

HPE StoreOnce setup is costly initially, but offers competitive, feature-rich pricing with capacity-based licensing and bundled support.

It is almost four times the earlier price.

Sufyan Khan

Head of Sales and Operations at New Horizon Computers

The pricing has become higher since July, and the license costs are more expensive compared to the past.

Houssem Sandli

Technical manager at Advanced Computer Technology (ACT)

The price for PowerProtect DD is not suitable for my customers. It is very high.

Triet Pham

Information Technology Technician at Lac Viet Computing

For more quotes and insights, download the Dell PowerProtect Data Domain report

The solution is quite expensive, possibly rated around seven and a half on a scale of one to ten.

Andrew Mcbeath

Technical Director of Managed IT Division at base2

For more quotes and insights, download the HPE StoreOnce report

Valuable Features

Dell PowerProtect Data Domain excels in deduplication, integrates with major platforms, enhances data transfer, and optimizes backup processes.

HPE StoreOnce provides efficient data management through high-performance deduplication, scalability, and seamless integration for optimal backup and storage solutions.

The most valuable feature of Dell PowerProtect DD (Data Domain) is its deduplication capability.

Houssem Sandli

Technical manager at Advanced Computer Technology (ACT)

Dell PowerProtect DD (Data Domain) is highly consistent, durable, easy to install, scalable, and compatible with any software today.

Sufyan Khan

Head of Sales and Operations at New Horizon Computers

The most beneficial features in the product are compatibility, which is the most valuable function.

A. AhadAlam

Head Of Systems Group at NCCPL

For more quotes and insights, download the Dell PowerProtect Data Domain report

If the actual size for backup data is 100 terabytes, using StoreOnce, it will be around less than 10% of the original size due to the 1 to 10 deduplication ratio.

Naguib Wasef

HPE Product Manager at a tech services company with 51-200 employees

The most effective features for data deduplication are maximizing storage capacity and minimizing expenditure.

Andrew Mcbeath

Technical Director of Managed IT Division at base2

The recovery is important.

reviewer2612268

Infrastructure Manager at a paper AND forest products with 10,001+ employees

For more quotes and insights, download the HPE StoreOnce report

Categories and Ranking

Dell PowerProtect Data Domain

Ranking in Deduplication Software

1st

Ranking in Disk Based Backup Systems

1st

Average Rating

8.6

Reviews Sentiment

6.8

Number of Reviews

Ranking in other categories

No ranking in other categories

HPE StoreOnce

Ranking in Deduplication Software

2nd

Ranking in Disk Based Backup Systems

2nd

Average Rating

8.4

Reviews Sentiment

7.2

Number of Reviews

108

Ranking in other categories

No ranking in other categories

Mindshare comparison

As of December 2025, in the Deduplication Software category, the mindshare of Dell PowerProtect Data Domain is 26.2%, down from 29.4% compared to the previous year. The mindshare of HPE StoreOnce is 17.6%, down from 19.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Deduplication Software Market Share Distribution
Product	Market Share (%)
Dell PowerProtect Data Domain	26.2%
HPE StoreOnce	17.6%
Other	56.2%

Deduplication Software

Q&A Highlights

Julia Miller

Community Director at PeerSpot

May 14, 2018

Compare EMC Data Domain and HPE StoreOnce. Which is better?

I have used DataDomains for many years now. Once you get over the initial price tag and look at cost/TB (realised), it really is good value. The features in the newer DDOS versions match or are better than anything else I have ever seen/heard of. I have several sites that have dedup ratios of 60:1 or even 100:1 (ok: 99:1). The Data Domains I have installed and maintain are all very reliable. My experience with HPE StorOnce is the exact opposite: Poor dedup ratio, limited compatibility, and not that reliable. The answer is: You get what you pay for.

See all answers

Featured Reviews

Branko Cirovic

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.

Read full review

Naguib Wasef

HPE Product Manager at a tech services company with 51-200 employees

Collaborate effectively with partners and benefit from robust data management capabilities

The functions of HPE StoreOnce that I find most valuable are its deduplication and replication options. These features save data and reduce the size of data significantly. If the actual size for backup data is 100 terabytes, using StoreOnce, it will be around less than 10% of the original size due to the 1 to 10 deduplication ratio. So, compression and replication are critical features I appreciate. Additionally, adaptive backup and restore capabilities of HPE StoreOnce are indeed very helpful functions. As I know from my technical team, the process is very easy for end users because the GUI and user experience with StoreOnce are straightforward. They can restore their backups at any time. An important feature of StoreOnce is that they can reserve an amount of storage capacity as protected capacity for a limited time, safeguarding their data against intrusion and other interactions. Based on feedback from customers, StoreOnce is regarded as a highly useful solution for backup. I am satisfied with the security aspects of HPE StoreOnce, but it's crucial for any company to maintain a multi-layer security approach. Starting with a firewall is essential for maintaining their environment. Additionally, security features on StoreOnce are useful. I believe that no company should rely solely on one layer of security; they should adopt a multi-layer security strategy that begins at the network level and extends to their internal solutions.

Read full review

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Answers from the Community

Julia Miller

Community Director at PeerSpot

May 14, 2018

Compare EMC Data Domain and HPE StoreOnce. Which is better?

2 out of 15 answers

it_user708567

Director Of Commercial Sales with 11-50 employees

May 9, 2018

Data Domain is a purpose built back up appliance and offers the best deduplication and lowest cost per logical TB in the industry. Coupled with software such as Networker, you have an unbeatable design (depending on data being backed up etc.). With deduplication taking place before it hits the LAN/WAN, it also saves network congestion and therefore costs in productivity/performance as well.

Read full answer

it_user332070

Sr. Commercial Account Manager at a tech services company with 501-1,000 employees

May 9, 2018

We have had very good success with the HPE StoreOnce product line. It usually comes in priced lower than the Data Domain solution. Getting up to 20 and 30 to 1 dedupe.

Read full answer

See all 15 answers

Top Industries

By visitors reading reviews

Computer Software Company

13%

Financial Services Firm

10%

Manufacturing Company

10%

Government

Computer Software Company

14%

Manufacturing Company

10%

Financial Services Firm

Government

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	34
Midsize Enterprise	22
Large Enterprise	36

By reviewers
Company Size	Count
Small Business	38
Midsize Enterprise	31
Large Enterprise	49

Questions from the Community

What is your primary use case for Dell EMC PowerProtect DD (Data Domain)?

Our main use case for Dell PowerProtect Data Domain is as a backup target.

See all answers

What do you like most about Dell PowerProtect DD (Data Domain)?

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 NV...

See all answers

What is your experience regarding pricing and costs for Dell PowerProtect DD (Data Domain)?

I think the pricing and setup costs for Dell PowerProtect Data Domain used to be good, but I feel the prices have gone up a bit too much recently; however, end customers are still willing to pay.

See all answers

What do you like most about HPE StoreOnce?

I think StoreOnce's deduplication technology is crucial for cost efficiency and faster recovery, especially for backup and data protection purposes.

See all answers

What is your experience regarding pricing and costs for HPE StoreOnce?

The setup cost is rated as four out of ten.

See all answers

What needs improvement with HPE StoreOnce?

To improve HPE StoreOnce, I think if HPE generates new models with lower capacities than 80 terabytes, it would be beneficial for the market. We face a significant issue with the current offerings....

See all answers

Comparisons

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Compared 8% of the time

Dell PowerProtect Data Manager vs Dell PowerProtect Data Domain

Compared 6% of the time

ExaGrid EX Series vs Dell PowerProtect Data Domain

Compared 6% of the time

Veeam Data Platform vs Dell PowerProtect Data Domain

Compared 6% of the time

IBM Storage Protect vs Dell PowerProtect Data Domain

Compared 4% of the time

More Dell PowerProtect Data Domain Competitors

ExaGrid EX vs HPE StoreOnce

Compared 7% of the time

Veeam Data Platform vs HPE StoreOnce

Compared 6% of the time

HPE Alletra Storage vs HPE StoreOnce

Compared 5% of the time

NetApp FAS Series vs HPE StoreOnce

Compared 5% of the time

IBM Storage Protect vs HPE StoreOnce

Compared 4% of the time

More HPE StoreOnce Competitors

Product Reports

Buyer's Guide

Dell PowerProtect Data Domain

December 2025

Download Dell PowerProtect Data Domain product report

Buyer's Guide

HPE StoreOnce

December 2025

Download HPE StoreOnce product report

Also Known As

DataDomain, Dell EMC Data Domain, PowerProtect Data Domain

HP StoreOnce

Overview

Dell PowerProtect Data Domain is the leading backup appliance built for powerful cyber resilience and seamless integration into on-premises environments. It supports both traditional and modern workloads, simplifying operations while reducing risks and costs.

Dell PowerProtect Data Domain offers scalable storage capabilities that integrate smoothly with backup systems. Its deduplication and compression technologies enhance storage efficiency by significantly reducing data volumes. Users appreciate its secure data protection, excellent deduplication and compression, efficient data replication, and the DD Boost protocol for faster data transfer. However, feedback suggests improvements are needed in areas like complex VTL tape addition, high pricing, and challenging cloud integration. The implementation may benefit from boosted processing power and enhanced ransomware protection.

What are the key features of Dell PowerProtect Data Domain?

Deduplication and Compression: Significantly reduces data volumes, optimizing storage usage.
Efficient Data Replication: Enhances data protection by securely transferring data across locations.
DD Boost Protocol: Promotes faster data transfer, streamlining backup processes.
Scalable Storage: Adapts to varying data capacities, ensuring growth accommodation.
Secure Data Protection: Safeguards data with robust encryption and protection features.

What benefits should be expected from Dell PowerProtect Data Domain?

Space and Cost Savings: Achieves reductions in data footprint, lowering storage expenses.
Reliable Backup and Recovery: Provides consistent and fast data backup and restoration capabilities.
Seamless Integration: Operates smoothly with existing backup software and environments.
Data Security: Offers comprehensive data protection to ensure business continuity.

Dell PowerProtect Data Domain is widely employed across various sectors like banking, finance, and government for its backup, deduplication, and archiving functions. Organizations utilize it with software like Veeam and NetWorker to optimize bandwidth, manage large data capacities, and deliver secure, reliable backup features, supporting both on-premises and hybrid deployments.

Dell Technologies

HP StoreOnce Backup is a data backup solution that provides a consistent, high-performance, scale-out architecture for your entire enterprise. Reduce the amount of backup data capacity by 95 percent, and choose between powerful dedicated appliances for data centers, or flexible virtual appliances for smaller and remote offices.

Hewlett Packard Enterprise

Sample Customers

The US Army, City of Houston, Lloyds TSB, TiVo, Teck, Ingram Entertainment, The New York Mets

Eurobank Serbia

Buyer's Guide

Dell PowerProtect Data Domain vs. HPE StoreOnce

December 2025

Free Report: Dell PowerProtect Data Domain vs. HPE StoreOnce

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