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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 7.5. ExaGrid holds a 6.4% mindshare in DS, compared to Hewlett Packard Enterprise’s 18.1% 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
  • 1,695 Views
  • 1,661 Comparison Views
100% willing to recommend
HPE StoreOnce
Read 108 HPE StoreOnce reviews
  • 7,093 Views
  • 3,688 Comparison Views
93% willing to recommend
 

Comparison Buyer's Guide

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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.

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To learn more, read our detailed ExaGrid EX Series vs. HPE StoreOnce Report (Updated: December 2025).
Buyer's Guide
ExaGrid EX Series vs. HPE StoreOnce
December 2025
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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:
 

Categories and Ranking

ExaGrid EX Series
Ranking in Deduplication Software
8th
Average Rating
9.0
Reviews Sentiment
6.1
Number of Reviews
7
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 January 2026, in the Deduplication Software category, the mindshare of ExaGrid EX Series is 6.4%, down from 9.5% compared to the previous year. The mindshare of HPE StoreOnce is 18.1%, down from 19.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Deduplication Software Market Share Distribution
ProductMarket Share (%)
HPE StoreOnce18.1%
ExaGrid EX Series6.4%
Other75.5%
Deduplication Software
 

Featured Reviews

DG
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
NW
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

"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."
"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 most valuable features of the solution are deduplication and landing zone."
"ExaGrid EX Series and Veeam was easy to set up, and it worked seamlessly."
"One of the main features is the landing zone, it is a particular space where the information is not duplicated."
"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."
"The solution easily integrates with the backup targets, such as Veeam."
"The solution's licensing policy is more practical and not confusing."
"Technical support is quite good."
"The important feature is compression and duplication. It has a good compression ratio and is very stable."
"The product’s data retention is very good."
"Deduplication is the most valuable feature."
"The most valuable feature of the solution is that the tool provides good value for somebody who needs an affordable and reliable storage solution."
"The most valuable feature of HPE StoreOnce is the virtual drive."
"HPE StoreOnce is particularly useful in situations where organizations require a backup solution to store their data. Its deduplication feature is quite impressive, providing a deduplication ratio of around 25 to 26."
More HPE StoreOnce pros
 

Cons

"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 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."
"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."
"The one place where we are sometimes losing the opportunity with ExaGrid is that a few customers still require a fiber channel connectivity, which is not always possible."
"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."
"We do not foresee the need to have an artificial intelligence app. It is not mature enough."
"Agnostic backups."
"We're outsourced with a partner who recalls a larger amount of problems with the stability of the product."
"While StoreOnce has many features, it needs to focus on integrating with third-party backup software solutions."
"The appliance doesn't have the global deduplication, it has StoreOnce deduplication. It does not deduplicate across the appliance, it will deduplicate in one particular store. With the global deduplication, I could store more data."
"They could provide more options for storage capacity."
"While the solution does everything expected, it would be beneficial if AI could be integrated for optimization and monitoring."
"Its customer service could be faster."
More HPE StoreOnce cons
 

Pricing and Cost Advice

"I rate ExaGrid EX Series' pricing eight to nine out of ten."
"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."
"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."
"In comparison to other solutions, it's affordable. They're all too expensive."
"The current agreement has 21 terabytes of free space and it cost approximately $35,000."
"HPE StoreOnce is cheaper compared to other solutions in the market."
"With the same capacity of Data Domain and ExaGrid, which is 80 terabytes, HPE is the cheapest one."
"The product is not expensive. It is available at a good price."
"I rate the platform'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."
"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 think the product is competitive in terms of pricing. Other products like the one from Dell are costlier compared to the tool."
More HPE StoreOnce pricing and cost advice
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Top Industries

By visitors reading reviews
Computer Software Company
13%
Manufacturing Company
12%
Financial Services Firm
12%
Energy/Utilities Company
6%
Computer Software Company
13%
Manufacturing Company
10%
Financial Services Firm
7%
Government
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business5
Midsize Enterprise2
By reviewers
Company SizeCount
Small Business38
Midsize Enterprise31
Large Enterprise49
 

Questions from the Community

What do you like most about ExaGrid EX Series?
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...
See all answers
What is your experience regarding pricing and costs for ExaGrid EX Series?
I rate ExaGrid EX Series' pricing eight to nine out of ten.
See all answers
What needs improvement with ExaGrid EX Series?
Everything can always be better, so I would give it a nine.
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 16% of the time
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Veritas NetBackup Appliance vs ExaGrid EX Series
Compared 8% of the time
NetApp FAS Series vs ExaGrid EX Series Logo
NetApp FAS Series vs ExaGrid EX Series
Compared 6% of the time
DD Boost vs ExaGrid EX Series Logo
DD Boost vs ExaGrid EX Series
Compared 4% of the time
More ExaGrid EX Series Competitors
Dell PowerProtect Data Domain vs HPE StoreOnce Logo
Dell PowerProtect Data Domain vs HPE StoreOnce
Compared 35% of the time
ExaGrid EX vs HPE StoreOnce Logo
ExaGrid EX vs HPE StoreOnce
Compared 7% of the time
Veeam Data Platform vs HPE StoreOnce Logo
Veeam Data Platform vs HPE StoreOnce
Compared 6% of the time
HPE Alletra Storage vs HPE StoreOnce Logo
HPE Alletra Storage vs HPE StoreOnce
Compared 5% of the time
Quantum DXi Series vs HPE StoreOnce Logo
Quantum DXi Series vs HPE StoreOnce
Compared 3% of the time
More HPE StoreOnce Competitors
 

Product Reports

Buyer's Guide
ExaGrid EX Series
January 2026
ExaGrid EX Series reportDownload ExaGrid EX Series product report
Buyer's Guide
HPE StoreOnce
January 2026
HPE StoreOnce reportDownload HPE StoreOnce product report
 

Also Known As

EX Series
HP StoreOnce
 

Overview

The ExaGrid EX Series hyper-converged secondary storage for backup product line consists of eight appliance models. Each appliance is sized for a full backup and for long-term retention. Any ExaGrid appliance can be mixed and matched in the same scale-out system with any other size or age appliance, allowing customers to buy what they need as they need it. This pay-as-you-grow model allows up to 25 appliances in a single scale-out system.
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

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
December 2025
Free Report: ExaGrid EX Series vs. HPE StoreOnce
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