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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 6.1% mindshare in DS, compared to Hewlett Packard Enterprise’s 18.5% 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
  • 1,721 Views
  • 1,687 Comparison Views
100% willing to recommend
HPE StoreOnce
Read 108 HPE StoreOnce reviews
  • 7,403 Views
  • 3,924 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: February 2026).
Buyer's Guide
ExaGrid EX Series vs. HPE StoreOnce
February 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:
 

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 February 2026, in the Deduplication Software category, the mindshare of ExaGrid EX Series is 6.1%, down from 9.4% 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
ProductMarket Share (%)
HPE StoreOnce18.5%
ExaGrid EX Series6.1%
Other75.4%
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."
"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."
"ExaGrid EX Series and Veeam was easy to set up, and it worked seamlessly."
"The solution easily integrates with the backup targets, such as Veeam."
"One of the main features is the landing zone, it is a particular space where the information is not duplicated."
"The most valuable features of the solution are deduplication and landing zone."
"The important feature is compression and duplication. It has a good compression ratio and is very stable."
"Based on customer feedback, I rate it highly as one of the most stable products in the backup and archiving line compared to offerings like Data Domain or from Huawei and Lenovo."
"Deduplication is the most valuable feature."
"I think StoreOnce's deduplication technology is crucial for cost efficiency and faster recovery, especially for backup and data protection purposes."
"It's easy to backup data, manage. A"
"The solution's most valuable feature is its catalyst mode, along with better performance, backup, and recovery."
"I like the tool’s deduplication feature. We get a ratio of 9:1 for deduplication. The product is also Linux based. Last year, our organization faced some virus attacks. However, the backup was safe because of the product being a Linux version. HPE StoreOnce is a secure product."
"From a centralized system, I can manage the interface, the backup policies, and the status of the database."
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 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 product's documentation can be made more precise."
"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."
"I would like to see better integration with Veeam software."
"The product's price could be better."
"The solution must provide backup options for smaller capacities."
"The product's support is an area with certain shortcomings requiring improvements. Support needs to be faster."
"The cost is at the forefront of everyone's mind."
"The product could be improved with better support for data protection."
"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."
"We're outsourced with a partner who recalls a larger amount of problems with the stability of the product."
More HPE StoreOnce cons
 

Pricing and Cost Advice

"I rate ExaGrid EX Series' pricing eight to nine out of ten."
"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."
"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 price of the product is reasonable."
"The product is not expensive. It is available at a good price."
"There are costs for additional storage and space."
"I rate the product's pricing a seven out of ten."
"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."
"With the same capacity of Data Domain and ExaGrid, which is 80 terabytes, HPE is the cheapest one."
"The solution is pretty expensive."
More HPE StoreOnce pricing and cost advice
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Top Industries

By visitors reading reviews
Manufacturing Company
13%
Computer Software Company
12%
Financial Services Firm
11%
Energy/Utilities Company
6%
Computer Software Company
12%
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 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 37% 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 5% of the time
NetApp FAS Series vs HPE StoreOnce Logo
NetApp FAS Series vs HPE StoreOnce
Compared 4% of the time
Quantum DXi Series vs HPE StoreOnce Logo
Quantum DXi Series vs HPE StoreOnce
Compared 2% of the time
More HPE StoreOnce Competitors
 

Product Reports

Buyer's Guide
ExaGrid EX Series
February 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
February 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: February 2026.
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