ExaGrid EX Series vs HPE StoreOnce comparison

ExaGrid and Hewlett Packard Enterprise are both solutions in the Deduplication Software category. ExaGrid is ranked #8 with an average rating of 9.0, while Hewlett Packard Enterprise is ranked #2 with an average rating of 7.6. ExaGrid holds a 5.7% mindshare in DS, compared to Hewlett Packard Enterprise’s 17.2% mindshare. Additionally, 100% of ExaGrid users are willing to recommend the solution, compared to 93% of Hewlett Packard Enterprise users who would recommend it.

ExaGrid EX Series

Read 7 ExaGrid EX Series reviews

1,957 Views
1,918 Comparison Views

100% willing to recommend

HPE StoreOnce

Read 108 HPE StoreOnce reviews

9,345 Views
5,046 Comparison Views

93% willing to recommend

ExaGrid EX Series

HPE StoreOnce

Comparison Buyer's Guide

Download the report

Executive SummaryUpdated on Nov 5, 2024

HPE StoreOnce and ExaGrid EX Series are competing in the data storage and backup solutions market. ExaGrid EX Series seems to have the upper hand for those valuing efficiency and scalability.

Features: HPE StoreOnce offers powerful deduplication, scalable architecture, and seamless integration with existing infrastructures, ensuring efficient data storage solutions. ExaGrid EX Series uses a unique landing zone to optimize backup and restore times, has scalable grid architecture, and removes the need for forklift upgrades, making it suitable for dynamic environments requiring quick data access.

Room for Improvement: HPE StoreOnce could enhance its ease of setup and streamline its support processes for better customer experience. Additionally, expanding its range of integrative capabilities could offer broader appeal. ExaGrid EX Series might improve documentation to further aid deployment, explore pricing adjustments for smaller enterprises, and enhance compatibility with additional software environments.

Ease of Deployment and Customer Service: ExaGrid EX Series boasts a streamlined plug-and-play deployment process with proactive support, facilitating efficient scalability and minimal downtime. HPE StoreOnce provides comprehensive documentation and robust support resources, aiding the deployment process, though some may find ExaGrid's simplicity favorable.

Pricing and ROI: HPE StoreOnce presents competitive upfront costs and substantial ROI by optimizing storage through deduplication. ExaGrid EX Series may involve a higher initial investment but delivers significant ROI via enhanced performance and long-term storage efficiency, appealing to those prioritizing fast data retrieval and a lower total cost of ownership over time.

To learn more, read our detailed ExaGrid EX Series vs. HPE StoreOnce Report (Updated: April 2026).

Buyer's Guide

ExaGrid EX Series vs. HPE StoreOnce

April 2026

Download the complete report

Helped 893,244 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:

Categories and Ranking

ExaGrid EX Series

Ranking in Deduplication Software

8th

Average Rating

9.0

Reviews Sentiment

6.1

Number of Reviews

Ranking in other categories

No ranking in other categories

HPE StoreOnce

Ranking in Deduplication Software

2nd

Average Rating

8.4

Reviews Sentiment

7.2

Number of Reviews

108

Ranking in other categories

Disk Based Backup Systems (2nd)

Mindshare comparison

As of May 2026, in the Deduplication Software category, the mindshare of ExaGrid EX Series is 5.7%, down from 9.0% compared to the previous year. The mindshare of HPE StoreOnce is 17.2%, down from 19.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Deduplication Software Mindshare Distribution
Product	Mindshare (%)
HPE StoreOnce	17.2%
ExaGrid EX Series	5.7%
Other	77.1%

Deduplication Software

Featured Reviews

Daniel Gillber

Information Technology advisor at Lotus Consulting

Improvements in data storage efficiency and customer support experience

ExaGrid EX Series and Veeam was easy to set up, and it worked seamlessly. It was very simple to use. We rarely needed to touch the ExaGrid boxes, except for upgrades. With the systems engineer from ExaGrid, and with our common knowledge of backup software, it was very easy to use. The performance was good, the interface was good, and the GUI was good. When ExaGrid introduced the air gapped feature, it was almost complete. Almost every hardware vendor has an air gapped feature, but they were significantly ahead of other vendors. The air gapped and immutable storage are very nice features. The price compared to other competitors was good with better features. It is not a cheap product, but compared to the features, it is a good competitor.

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

Quotes from Members

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

Pros

"One of the main features is the landing zone, it is a particular space where the information is not duplicated."

"The tool has improved backup and recovery times. One of the key features contributing to this improvement is the landing zone and deduplication retention zone. When data is in the landing zone, the process is fast, ensuring smooth backup and recovery operations at high speeds. However, the process becomes slower for long-term backups moved to the retention zone due to fragmentation. So, if the data is older than a few days, the speed may be limited, especially for non-deduplicated data in the landing zone."

"One of the most valuable aspects of the ExaGrid EX Series is the support."

"The most valuable features of the solution are deduplication and landing zone."

"The most valuable feature is the ease of use and data deduplication. It's extremely easy to use and does a very good job of data deduplication and compression."

"The solution easily integrates with the backup targets, such as Veeam."

"ExaGrid EX Series and Veeam was easy to set up, and it worked seamlessly."

"It is a solid and a quite simple solution, which is a good combination. The customers like the simplicity and its scale-out capacity. They like the support pricing, and even the extension capacity pricing, a fixed price, which the executive is offering in Czech market."

More ExaGrid EX Series pros

"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."

"StoreOnce scaling has been good."

"Deduplication and compression are in a good ratio. It supports the HPE Catalyst protocol, which is much faster than NFS and other protocols. We use CommVault and Veeam, and these two solutions support the Catalyst protocol very well and are integrated at high speed. It is faster than normal access."

"The product is stable; there are no bugs or glitches, it doesn't crash or freeze, it's reliable, and the performance is good."

"HPE backup systems are very good products, easy to manage, with very good performance, a lot of ongoing new development, and good integration with many backup or storage products."

"Has very good deduplication and encryption features."

"It's cost effective, technologically advanced, and very scalable."

"The scalability of HPE StoreOnce is excellent."

More HPE StoreOnce pros

Cons

"The solution could improve by switching to a flash-type solution rather than the spinning drives that they currently use. However, we have not had any failure with the spinning drives. The flash-type drives are more up-to-date and are something that is in their roadmap."

"When speaking about a scale-out, you want to have better equipment. You cannot just add a disc to the foreign equipment. You have to buy another one and put it together, like parallel."

"The support is not that fast to deal with our concerns. It is next day support, they could improve on the speed."

"I would like for them to develop direct cloud integration with a third-party cloud. Direct integration with AWS and other cloud providers."

"The product's documentation can be made more precise."

"The solution could improve by switching to a flash-type solution rather than the spinning drives that they currently use."

"The tool reduces storage footprint. However, clients are now storing data for longer durations with increasing requirements to retain backups for longer periods, particularly as a defense against ransomware attacks. As a result, the retention zone with duplicated data is experiencing more demand, leading to space constraints. This necessitates using higher-end, more expensive models to address the issue."

More ExaGrid EX Series cons

"The user interface of HPE StoreOnce should be more user-friendly. Additionally, the configuration and troubleshooting could be better."

"The product could be improved with better support for data protection."

"Deduplication algorithms still require enhancement."

"It is difficult to solve issues with this solution remotely. I prefer to use the knowledge base platforms. The response time could improve."

"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."

"I don't see any new features that we could want or anything that could be done along those lines. Just that we need a bigger machine, so more speed."

"But the initial network setup is not intuitive, and this could be improved."

"Segmentation was one of the requirements. The HP team promised us that it is possible, but it wasn't available."

More HPE StoreOnce cons

Pricing and Cost Advice

"I rate ExaGrid EX Series' pricing eight to nine out of ten."

"My company had to pay 1,60,000 EUR for the system we use, and the payment was made just once for the system and five years of full support."

"The current agreement has 21 terabytes of free space and it cost approximately $35,000."

"In comparison to other solutions, it's affordable. They're all too expensive."

"The previous solutions I have used both included the Backup Software and the Appliance making it hard to compare to this solution. However, overall the solution is reasonably priced for the features you receive. ExaGrid EX Series is priced better than HP, Dell, and possibly Commvault which I have compared in the past."

"The product is not expensive. It is available at a good price."

"The solution's cost is above average."

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

"There are costs for additional storage and space."

"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."

"I would rate it around two or three because, compared to others, it tends to be higher priced."

"I rate the product's pricing a seven out of ten."

"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

See which vendors are best for you

Use our free recommendation engine to learn which Deduplication Software solutions are best for your needs.

See recommendations

893,244 professionals have used our research since 2012.

Top Industries

By visitors reading reviews

Manufacturing Company

16%

Financial Services Firm

10%

Computer Software Company

Healthcare Company

Financial Services Firm

Computer Software Company

Manufacturing Company

Government

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	5
Midsize Enterprise	2

By reviewers
Company Size	Count
Small Business	38
Midsize Enterprise	30
Large Enterprise	51

Questions from the Community

What needs improvement with ExaGrid EX Series?

Everything can always be better, so I would give it a nine.

See all answers

What is your primary use case for ExaGrid EX Series?

We used ExaGrid EX Series as a landing zone for Veeam software. Initially they did not have immutable storage, but when they released that feature, we implemented it. We used it with Veeam software...

See all answers

What advice do you have for others considering ExaGrid EX Series?

I was a customer. My overall rating for ExaGrid EX Series is 9 out of 10.

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

What is your primary use case for HPE StoreOnce?

The main use case for HPE StoreOnce is that it serves as an appliance storage for backup and archiving. StoreOnce incorporates deduplication and replication, achieving a ratio that arrives at 1 to ...

See all answers

Comparisons

Dell PowerProtect Data Domain vs ExaGrid EX Series

Compared 23% of the time

Quantum DXi Series vs ExaGrid EX Series

Compared 12% of the time

NetApp FAS Series vs ExaGrid EX Series

Compared 8% of the time

Veritas NetBackup Appliance vs ExaGrid EX Series

Compared 8% of the time

BridgeSTOR Microsoft DPM Appliance vs ExaGrid EX Series

Compared 6% of the time

More ExaGrid EX Series Competitors

Dell PowerProtect Data Domain vs HPE StoreOnce

Compared 34% of the time

ExaGrid EX vs HPE StoreOnce

Compared 6% of the time

NetApp FAS Series vs HPE StoreOnce

Compared 5% of the time

Veeam Data Platform 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

ExaGrid EX Series

May 2026

Download ExaGrid EX Series product report

Buyer's Guide

HPE StoreOnce

May 2026

Download HPE StoreOnce product report

Also Known As

EX Series

HP StoreOnce

Overview

ExaGrid EX Series provides ease of use, strong data deduplication and compression, and a fast recovery landing zone. It integrates seamlessly with backup environments and is known for competitive pricing, particularly in the Czech market, despite requiring higher investment.

ExaGrid EX Series is highly valued for onsite backup and recovery, often paired with Veeam software, specifically for virtual machine backups. It offers improved backup and recovery speeds, excellent scale-out capacity, and an innovative air-gapped feature that enhances data protection. The system's integration with Veeam, Oracle Storage, and VMware allows efficient data management. Feedback highlights the need for direct cloud integration and better next-day support parts. There's a call for fiber channel connectivity and enhanced documentation. Transitioning to flash drives is a consideration for more modern infrastructure, although the current technology remains effective.

What are the Key Features of ExaGrid EX Series?

Data Deduplication and Compression: Minimizes storage needs and reduces costs.
Fast Recovery Landing Zone: Ensures quick and reliable data retrieval.
Scale-Out Architecture: Facilitates expansion by adding appliances, optimizing capacity.
Seamless Backup Integration: Works effectively with Veeam, Oracle Storage, VMware.
Air-Gapped Feature: Adds an extra layer of protection against data breaches.

What Benefits Should Users Consider in Reviews?

Improved Backup and Recovery Times: Enhances operational efficiency.
Cost-Effectiveness: Offers competitive pricing, especially in certain markets.
Reliable Performance: Delivers high-quality data management and protection.
Simplicity of Use: Reduces complexity in data operations.

ExaGrid EX Series excels in sectors requiring robust data protection, such as finance and healthcare. Its compatibility with Veeam and VMware suits organizations with extensive virtual environments. Industries with stringent data integrity requirements benefit from its air-gapped feature and high deduplication efficiency, ensuring secure operations.

ExaGrid

HPE StoreOnce offers efficient data management through deduplication, seamless backup integration, and Catalyst technology, providing cost-effective storage solutions for extensive data retention and disaster recovery.

HPE StoreOnce is designed for data backup, deduplication, and archiving across sectors like finance, manufacturing, and meteorology. It ensures optimal performance with high deduplication ratios, seamless integration with backup software like Veeam and CommVault, and robust security features. Despite its benefits, users identify room for improvement in integration with Active Directory, cloud connections, and third-party software. Its initial setup and interface demand better simplification. Enhanced deduplication, faster support, improved scalability, and performance are necessary for backup and restore speeds. There is also a call for cybersecurity enhancements, expanded storage capacities, and better reporting.

What are the key features of HPE StoreOnce?

Deduplication: Reduces data storage requirements efficiently.
Compression: Optimizes data size without compromising integrity.
Catalyst Technology: Enhances data management and storage efficiency.
Seamless Backup Integration: Works with popular backup software for streamlined operations.
Robust Security: Ensures data protection from breaches and loss.

What benefits should users look for in HPE StoreOnce reviews?

Enhanced Data Retention: Extends the lifecycle of data through efficient storage solutions.
Cost-effective Storage: Reduces expenses associated with data management.
Reliable Disaster Recovery: Ensures data is retrievable in emergencies.
Simple Configuration: Eases the setup process for quick deployment.
High Performance: Guarantees fast and efficient data handling.

HPE StoreOnce is widely implemented for backup and deduplication tasks in sectors like finance, manufacturing, and meteorology, particularly benefitting those who require robust local and hybrid cloud setups. Commonly used in conjunction with IT infrastructures for disk backup, data recovery, and disaster recovery scenarios, organizations utilize its features to optimize storage efficiency in environments supporting virtual workloads.

Hewlett Packard Enterprise

Sample Customers

NCI Group, North Attleborough Public School, North Kingstown School Department, NPS Pharmaceuticals, Prudential Douglas Elliman, Rathbone Brothers PLC, Rio Hondo College, Ruder Finn, Sarah Lawrence College

Eurobank Serbia

Buyer's Guide

ExaGrid EX Series vs. HPE StoreOnce

April 2026

Free Report: ExaGrid EX Series vs. HPE StoreOnce

Find out what your peers are saying about ExaGrid EX Series vs. HPE StoreOnce and other solutions. Updated: April 2026.

DOWNLOAD NOW

893,244 professionals have used our research since 2012.

See our ExaGrid EX Series vs. HPE StoreOnce report.

See our list of best Deduplication Software vendors.

We monitor all Deduplication Software reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.