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 7.5. Dell Technologies holds a 24.7% mindshare in DS, compared to Hewlett Packard Enterprise’s 18.5% mindshare. Additionally, 90% 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 87 Dell PowerProtect Data Domain reviews

10,864 Views
6,192 Comparison Views

90% willing to recommend

HPE StoreOnce

Read 108 HPE StoreOnce reviews

7,403 Views
3,924 Comparison Views

93% willing to recommend

Dell PowerProtect Data Domain

HPE StoreOnce

Comparison Buyer's Guide

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Executive SummaryUpdated on Feb 8, 2026

HPE StoreOnce and Dell PowerProtect Data Domain compete in the backup and data protection category. StoreOnce has the upper hand in deduplication flexibility and seamless integration with HPE solutions; however, Data Domain offers superior speed and software compatibility.

Features: HPE StoreOnce offers highly flexible deduplication across client, appliance, and media servers, which is beneficial for bandwidth-constrained environments. It integrates smoothly with other HPE products. Dell PowerProtect Data Domain highlights DD Boost technology, enhancing backup speeds while reducing storage space. It supports multiple backup applications like NetWorker and Avamar, offering a broad range of integration options. Both solutions provide reliable disaster recovery.

Room for Improvement: StoreOnce users suggest better UI design, improved deduplication for smaller files, and enhanced third-party software integration. They also want more scalable solutions for smaller setups and better handling of mixed media types. Data Domain users point out a need for better pricing, improved backup software compatibility, and simpler user interfaces. More cloud service integrations are desired. Both products could enhance their initial setup processes and cross-software compatibility.

Ease of Deployment and Customer Service: Both products support on-premises deployments, but StoreOnce offers more hybrid cloud options, and Data Domain offers more private cloud configurations. HPE receives praise for its responsive customer service and local presence. Dell's customer service is noted for being proactive and comprehensive, albeit at a higher cost.

Pricing and ROI: StoreOnce has higher upfront costs but offers savings by reducing storage needs, with ROI often seen within a few years. Its pricing is competitive in large-scale environments. Dell's higher licensing fees are justified by its performance and bundled benefits like comprehensive software packages. However, high initial setup and licensing costs can be a deterrent for smaller enterprises.

To learn more, read our detailed Dell PowerProtect Data Domain vs. HPE StoreOnce Report (Updated: February 2026).

Buyer's Guide

Dell PowerProtect Data Domain vs. HPE StoreOnce

February 2026

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Helped 881,733 peers since 2012

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

5.9

Dell PowerProtect Data Domain enhances storage efficiency and cost savings with compression, deduplication, but may be costly for small businesses.

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

We have not fully expanded the air gap yet, and we are still in the testing stages concerning recovery in case of a cybersecurity threat.

Michael Lopez

Sr Systems Engineer at a outsourcing company with 10,001+ employees

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

7.1

Dell PowerProtect Data Domain service is highly rated, with efficient support despite regional inconsistencies and occasional escalation challenges.

Sentiment score

7.6

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

We feel that we are working with people who understand the technology and the historical patterns of this environment, and when we raise a support request, we have no doubt because it seems that we are working with a product engineer.

Mayowa Afeez Olayiwola

System Administrator at a financial services firm with 201-500 employees

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

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

6.6

Dell PowerProtect Data Domain offers scalable, seamless expansion with future-proof planning and compatibility across diverse enterprise environments.

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 highly stable and reliable, with minimal issues and consistently positive user satisfaction and performance.

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.

Mohamed Ibrahem

Ict Assistant GM at Phpco

I have been using it for up to three years with no upgrading or downtime.

Mohamed Elfakharany

Data Protection Engineer at a tech services company with 51-200 employees

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

Users seek improved features, better integration, and cost transparency for Dell PowerProtect Data Domain, highlighting security and support issues.

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 offers high performance for enterprises but may be costly for smaller businesses, with regional pricing variations.

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

For small clients, it is very expensive.

Sergio Omar Ruiz Paz

Specialist Senior N2 at Entelgy

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)

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, scalability, and compression, ensuring cost-effective, fast, and secure data management.

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

6.7

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 February 2026, in the Deduplication Software category, the mindshare of Dell PowerProtect Data Domain is 24.7%, down from 28.8% compared to the previous year. The mindshare of HPE StoreOnce is 18.5%, down from 19.3% 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	24.7%
HPE StoreOnce	18.5%
Other	56.8%

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

11%

Financial Services Firm

10%

Manufacturing Company

10%

Government

Computer Software Company

12%

Manufacturing Company

10%

Financial Services Firm

Government

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	35
Midsize Enterprise	23
Large Enterprise	38

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)?

I work as an implementer of Dell PowerProtect Data Domain systems, storage, and backup systems, serving as an administrator and support specialist. I have 15 years of experience implementing Data D...

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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)?

Regarding the pricing for Dell PowerProtect Data Domain, it is expensive. For small clients, it is very expensive. Large clients find it not expensive, but it depends on the solution in the environ...

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 5% of the time

Veeam Data Platform vs Dell PowerProtect Data Domain

Compared 5% of the time

ExaGrid EX Series vs Dell PowerProtect Data Domain

Compared 5% of the time

ExaGrid EX 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 5% of the time

NetApp FAS Series vs HPE StoreOnce

Compared 4% of the time

HPE Alletra Storage vs HPE StoreOnce

Compared 4% 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

February 2026

Download Dell PowerProtect Data Domain product report

Buyer's Guide

HPE StoreOnce

January 2026

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

February 2026

Free Report: Dell PowerProtect Data Domain vs. HPE StoreOnce

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