Dell PowerProtect Data Domain vs ExaGrid EX vs HPE StoreOnce comparison

Dell Technologies and ExaGrid are both solutions in the Disk Based Backup Systems category. Dell Technologies is ranked #1 with an average rating of 8.8, while ExaGrid is ranked #4 with an average rating of 7.0. Dell Technologies holds a 38.7% mindshare in DBBS, compared to ExaGrid’s 10.9% mindshare. Additionally, 90% of Dell Technologies users are willing to recommend the solution, compared to 100% of ExaGrid users who would recommend it.

Dell PowerProtect Data Domain

Read 88 Dell PowerProtect Data Domain reviews

11,151 Views
3,568 Comparison Views

90% willing to recommend

ExaGrid EX

Read 4 ExaGrid EX reviews

1,048 Views
880 Comparison Views

100% willing to recommend

HPE StoreOnce

Read 108 HPE StoreOnce reviews

7,659 Views
3,140 Comparison Views

93% willing to recommend

Dell PowerProtect Data Domain

ExaGrid EX

HPE StoreOnce

Comparison Buyer's Guide

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Executive Summary

We performed a comparison between Dell PowerProtect Data Domain, ExaGrid EX, and HPE StoreOnce based on real PeerSpot user reviews.

Find out what your peers are saying about Dell Technologies, Hewlett Packard Enterprise, datto and others in Disk Based Backup Systems.

To learn more, read our detailed Disk Based Backup Systems Report (Updated: March 2026).

Buyer's Guide

Disk Based Backup Systems

March 2026

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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:

Mindshare comparison

As of April 2026, in the Disk Based Backup Systems category, the mindshare of Dell PowerProtect Data Domain is 38.7%, down from 41.2% compared to the previous year. The mindshare of ExaGrid EX is 10.9%, up from 10.5% compared to the previous year. The mindshare of HPE StoreOnce is 37.3%, down from 41.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Disk Based Backup Systems Mindshare Distribution
Product	Mindshare (%)
Dell PowerProtect Data Domain	38.7%
HPE StoreOnce	37.3%
ExaGrid EX	10.9%
Other	13.099999999999994%

Disk Based Backup Systems

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.

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AhmedEl-Tayeb

Product Manager at MCS

Has offered a cost-effective option with solid results but requires automation features for better efficiency

For ExaGrid EX, I would appreciate additional features such as backup and restore, automation processes, and automation software for backup and restore processes. I mention that some additional features may be provided by VMware or Dell as support for the hardware they are selling, but ExaGrid EX is more of a budget-friendly solution for customers who are in charge on a daily basis of the solution itself, dealing with manual tasks rather than automated tasks. I am not in a situation to provide an exact answer for what I would specifically improve in this regard.

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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.

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Quotes from Members

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

Pros

"It is very fast as compared to the other competitors; its simplicity and bit rate are also valuable, and it takes less time if we compare it with the old solution that we have."

"The initial setup was straightforward. Deployment takes about two weeks."

"The tool's performance is very good. DD Boost can improve its performance and backup."

"PowerProtect is a flexible solution that you can cover various cloud and on-premise environments."

"When utilizing Dell PowerProtect DD for backup systems, Data Domain offers fast performance with low latency, providing high throughput for quicker backups compared to other vendors."

"Stable and scalable suite of solutions with deduplication, apart from data protection, storage, and backup."

"My advice to other organizations considering Dell PowerProtect Data Domain is that if you are looking for a cost-effective solution that provides a very good compression and deduplication ratio, then certainly you should implement Dell PowerProtect Data Domain as it integrates well with any backup technologies."

"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."

More Dell PowerProtect Data Domain pros

"I find ExaGrid EX to be a useful solution for customers looking for a budget-friendly product."

"Both the pricing and the performance are excellent."

"Backup and restore processes are much shorter now, and we don't need forklift upgrades every three to four years."

"Both the pricing and the performance are excellent."

"The most valuable features of ExaGrid EX are the Veeam features and Landing Zone."

"The valuable feature is the ability to work with the Veeam software to reduce the backup windows."

"The most valuable features for us are the ease of use, the reliability, and the exceptional deduplication that we get across that data that we store on those devices."

"The initial setup is one of the most user-friendly B2B user solutions. It's good, it's easy. Deployment usually takes less than one day. You only need one person for deployment and maintenance."

"If you want a reliable and reasonably-priced product, I would recommend it."

"The support for this solution is the best in our country."

"Over 51TB of data is backed up and replicated off-site every week quickly and reliably, compared to the laborious tape archiving solution we had in the past."

"The most valuable features are the deduplication and compression capabilities."

"We can backup our exchange server, we can backup our files, and it just works without being overly complex either."

More HPE StoreOnce pros

Cons

"Dell PowerProtect DD should come out with its own system so we do not have to use Data Domain. For example, something similar to what Symantec has done."

"Its management can be improved."

"The pricing could be better, but it's still not too expensive."

"One area for improvement regarding Dell PowerProtect Data Domain is the support. We are in Pakistan and there is no physical support available on the software side."

"EMC is very expensive for small customers."

"The pricing model needs to be improved."

"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."

"Their licensing matrix is confusing and is a feature they need to improve."

More Dell PowerProtect Data Domain cons

"I would like to see free disk space."

"The solution’s web access should be improved."

"I would like to see free disk space."

"ExaGrid EX is more of a budget-friendly solution for customers who are in charge on a daily basis of the solution itself, dealing with manual tasks rather than automated tasks."

"It's not big, but it could be smaller and take up less space in the data center."

"Initial setup is done via ssh connection and not web based, and the web based management is a little less appealing visually than the previous incarnation."

"HPE StoreOnce needs to provide a SaaS solution by offering high-density disks."

"We have lost some market due to the minimum capacity now being 80 terabytes."

"The repository should have an extension to connect to the cloud and deposit the backups."

"In order to import tapes from StoreOnce, we had to identify the ID of the items in each store on the appliances, and then create them manually on the HP Data Protector."

"The CIFS share service performance is really poor; it is a nightmare."

"HPE StoreOnce Backup to Disk (BTD) is not a good backup solution for NAS devices. It does not have a dual controller, so if one controller fails, the entire system will go down."

More HPE StoreOnce cons

Pricing and Cost Advice

"I can't remember what the license costs are. They might be paid monthly or every two months."

"Its price is reasonable."

"The approximate license cost for Dell PowerProtect DD (Data Domain) is around 5,00,000."

"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."

"If we do not move to the cloud solution and stay with our on-premise version we will miss some new features."

"The pricing is cost-effective for the solution"

"The product is expensive."

"The cheaper device costs around $70,000."

More Dell PowerProtect Data Domain pricing and cost advice

"I rate ExaGrid EX ten out of ten for pricing."

"The renewal fee is approximately $3,500 to $3.750 for a 60 terabyte device."

"I think the product is competitive in terms of pricing. Other products like the one from Dell are costlier compared to the tool."

"We have got a perpetual license, and we have access to all the features. If you are using cloud banks, you can store the internal data in HPE Cloud if needed. You can offload the data to the HPE Cloud. It is a licensed product. We have got around 10 TB of cloud bank storage with a one-time payment. We specifically took 10 TB for very critical offsite backups. We can also increase it in blocks if needed."

"The price puts me off. It's definitely on the high side."

"The cost of HPE StoreOnce is very expensive."

"Price-wise, it comes with a high price tag when compared to other products."

"HPE StoreOnce is cheaper compared to other solutions in the market."

"The licensing costs is capacity-based and come bundled with support."

"The licensing schemes could improve in HPE StoreOnce and the price is high. They should reduce the price."

More HPE StoreOnce pricing and cost advice

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Top Industries

By visitors reading reviews

Financial Services Firm

10%

Computer Software Company

10%

Manufacturing Company

10%

Government

Financial Services Firm

10%

Healthcare Company

Computer Software Company

Manufacturing Company

Computer Software Company

11%

Manufacturing Company

Financial Services Firm

Government

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	34
Midsize Enterprise	24
Large Enterprise	39

No data available

By reviewers
Company Size	Count
Small Business	38
Midsize Enterprise	31
Large Enterprise	50

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 adminis...

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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 l...

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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. La...

See all answers

What needs improvement with ExaGrid EX?

For ExaGrid EX, I would appreciate additional features such as backup and restore, automation processes, and automati...

See all answers

What is your primary use case for ExaGrid EX?

My role in relation to ExaGrid EX is partner and reseller.

See all answers

What advice do you have for others considering ExaGrid EX?

I would prefer another way to provide support; sending all the questions in an Excel sheet or a Word file would allow...

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 backu...

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 be...

See all answers

Comparisons

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Compared 7% 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 4% of the time

ExaGrid EX Series vs Dell PowerProtect Data Domain

Compared 4% of the time

Quantum DXi Series vs Dell PowerProtect Data Domain

Compared 4% of the time

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Quantum DXi Series vs ExaGrid EX

Compared 9% of the time

Dell PowerVault vs ExaGrid EX

Compared 8% of the time

Oracle Zero Data Loss Recovery Appliance vs ExaGrid EX

Compared 8% of the time

NetApp AltaVault vs ExaGrid EX

Compared 2% of the time

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Veeam Data Platform vs HPE StoreOnce

Compared 5% of the time

NetApp FAS Series vs HPE StoreOnce

Compared 4% of the time

ExaGrid EX Series vs HPE StoreOnce

Compared 4% of the time

IBM Storage Protect vs HPE StoreOnce

Compared 4% of the time

HPE Alletra Storage vs HPE StoreOnce

Compared 3% of the time

More HPE StoreOnce Competitors

Product Reports

Buyer's Guide

Dell PowerProtect Data Domain

April 2026

Download Dell PowerProtect Data Domain product report

Buyer's Guide

Disk Based Backup Systems

March 2026

Download ExaGrid EX product report

Buyer's Guide

HPE StoreOnce

March 2026

Download HPE StoreOnce product report

Also Known As

DataDomain, Dell EMC Data Domain, PowerProtect Data Domain

No data available

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

ExaGrid's disk backup with deduplication system is purpose-built for backup that leverages an architecture optimized for scalability, performance, and price. The system scales as needed by adding ExaGrid appliances, which virtualize into a GRID architecture automatically, adding capacity and processing power while acting and being managed as one unified system.

ExaGrid disk-based backup appliances include GRID computing software, which virtualizes them into a single pool of long-term capacity. Capacity load balancing of all data across servers is automatic, and multiple GRID systems can be combined for a total logical backup capacity of 16PB.

ExaGrid

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

7-Eleven, ABC, ACNB Bank, Admiration Foods, Aeroflex, AGH, Alabama Alcoholic Beverage Control Board, Alberta Motor Association, Allegro MicroSystems, American Standard, Ameris Bank, Arch Reinsurance Ltd., Arthritis Foundation

Eurobank Serbia

Buyer's Guide

Disk Based Backup Systems

March 2026

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