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ExaGrid EX Series vs HPE StoreOnce vs Quantum DXi Series comparison

 

Comparison Buyer's Guide

Executive Summary

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 Deduplication Software category, the mindshare of ExaGrid EX Series is 5.7%, down from 9.4% compared to the previous year. The mindshare of HPE StoreOnce is 18.5%, down from 19.5% compared to the previous year. The mindshare of Quantum DXi Series is 4.8%, up from 3.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Deduplication Software Mindshare Distribution
ProductMindshare (%)
HPE StoreOnce18.5%
ExaGrid EX Series5.7%
Quantum DXi Series4.8%
Other71.0%
Deduplication Software
 

Featured Reviews

DG
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.
NW
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.
reviewer2301564 - PeerSpot reviewer
Expert Backup at a tech services company with 201-500 employees
A virtual deduplication backup appliance that protects physical and virtual data across remote sites, the datacenter and cloud deployments
Given its ease of use and management, I believe there are no specific caveats that users need to be aware of during the setup of DXRIS for backups. The process was straightforward, and I did not encounter any challenges or issues. As for a rating on a scale of one to ten, with one being the worst and ten being the best, I would rate the Quantum DXI Series a nine. My deduction is primarily influenced by personal preferences, particularly regarding the user interface and it is a highly commendable system, I would rate it a solid nine out of ten.

Quotes from Members

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

Pros

"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 equipment is pretty solid."
"ExaGrid EX Series and Veeam was easy to set up, and it worked seamlessly."
"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 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 feature of the solution is its UI. The product's UI makes it easy for users to configure the tool."
"Has very good deduplication and encryption features."
"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."
"We have a high-tech solution in the data centre which will support us as we follow the company strategy in the coming years."
"It's stable enough for our backup product."
"It's easy to backup data, manage, and it's a product that's been running now for nearly three years without any issues."
"The product has really improved the backup and restore for our infrastructure."
"Catalyst backup is used to back up Oracle databases, and provides very good throughput during backups."
"While the challenges posed by the difficulties were significant, they prompted the replacement of problematic components, resulting in the resolution of issues. Importantly, there were no substantial ongoing concerns. Regarding the overall performance, it has been consistently excellent."
"I am impressed with the tool's technical alliance with Veeam and Veritas."
 

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."
"The solution could improve by switching to a flash-type solution rather than the spinning drives that they currently use."
"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."
"The support is not that fast to deal with our concerns. It is next day support, they could improve on the speed."
"The product's documentation can be made more precise."
"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 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."
"I would like for them to develop direct cloud integration with a third-party cloud. Direct integration with AWS and other cloud providers."
"Lack of foresight of that is probably one of my biggest irks with HP on that."
"The GUI and its user-friendliness have some room for improvement."
"We wanted to restore the files we backed up, and on three occasions we were not able to, and this got us in a lot of trouble, so I don't think I will take this risk again. Use something else."
"The performance of NAS/CIFS Shares on a StoreOnce is acceptable for a standard write operation, but performance during restores (such as Virtual Machine Restores from Veeam Backup and Replication) is unacceptable."
"Hardware maintenance involves some downtime for backup destination storage which can be a problem for some."
"The setup phase is not so simple that an end user can plug and play to make it operational."
"Cloud integration needs to be simplified."
"We did some calculations on, when it says in the sales sheet that we got this number of terabytes, but the system itself uses some terabytes. So what we ended up with was having 10 or 11 terabytes less than HP actually said that it would contain."
"Perhaps the most notable area for enhancement lies in the web interface for management. The current limitations in LDAP editing capabilities are not addressed in the UI, and I haven't observed any recent updates. It's possible that the new version of the DXI service incorporates improvements in the GUI, but I cannot confirm. While there is room for improvement in the current GUI, it remains a relatively minor issue. Overall, the system is comprehensive, covering aspects such as reports on latency and networking, leaving little room for additional enhancements in those areas."
"The product needs to improve performance while scaling out. It also needs to improve stability."
 

Pricing and Cost Advice

"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."
"I rate ExaGrid EX Series' pricing eight to nine out of ten."
"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 current agreement has 21 terabytes of free space and it cost approximately $35,000."
"I rate the product's pricing a seven out of ten."
"Price-wise, it comes with a high price tag when compared to other products."
"The product's pricing is medium."
"The product is not expensive. It is available at a good price."
"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."
"With the same capacity of Data Domain and ExaGrid, which is 80 terabytes, HPE is the cheapest one."
"I rate the platform's pricing a seven out of ten."
"I do not oversee this aspect, as pricing is contingent on factors such as volume, technical specifications, and the desired features. Consequently, I lack information on the pricing details and structure."
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Top Industries

By visitors reading reviews
Manufacturing Company
15%
Computer Software Company
11%
Financial Services Firm
10%
Construction Company
6%
Computer Software Company
11%
Manufacturing Company
9%
Financial Services Firm
8%
Government
6%
Financial Services Firm
20%
Computer Software Company
10%
Manufacturing Company
9%
Comms Service Provider
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 Enterprise50
No data available
 

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 land...
What is your experience regarding pricing and costs for ExaGrid EX Series?
I rate ExaGrid EX Series' pricing eight to nine out of ten.
What needs improvement with ExaGrid EX Series?
Everything can always be better, so I would give it a nine.
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...
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...
Ask a question
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Also Known As

EX Series
HP StoreOnce
DXi Series, Quantum DX
 

Overview

 

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
Nihon Unisys, Nikoyo China
Find out what your peers are saying about Dell Technologies, Hewlett Packard Enterprise, NetApp and others in Deduplication Software. Updated: March 2026.
885,789 professionals have used our research since 2012.