ExaGrid EX Series vs QoreStor comparison

The compared ExaGrid and Quest Software solutions aren't in the same category. ExaGrid is ranked #8 in DS , with an average rating of 9.0, and holds a 5.4% mindshare in the category. Quest Software is ranked #4 in SS , with an average rating of 7.0, and holds a 12.4% mindshare. Additionally, 100% of ExaGrid users are willing to recommend the solution, compared to 100% of Quest Software users who would recommend it.

ExaGrid EX Series

Read 7 ExaGrid EX Series reviews

2,043 Views
2,002 Comparison Views

100% willing to recommend

QoreStor

Read 10 QoreStor reviews

4,957 Views
248 Comparison Views

100% willing to recommend

ExaGrid EX Series

QoreStor

Comparison Buyer's Guide

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Executive Summary

We performed a comparison between ExaGrid EX Series and QoreStor based on real PeerSpot user reviews.

Find out what your peers are saying about Dell Technologies, Hewlett Packard Enterprise, NetApp and others in Deduplication Software.

To learn more, read our detailed Deduplication Software Report (Updated: May 2026).

Buyer's Guide

Deduplication Software

May 2026

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Helped 900,838 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

Average Rating

9.0

Reviews Sentiment

6.1

Number of Reviews

Ranking in other categories

Deduplication Software (8th)

QoreStor

Average Rating

8.0

Reviews Sentiment

7.2

Number of Reviews

Ranking in other categories

Backup and Recovery (53rd), Data Replication (8th), Disk Based Backup Systems (8th), Storage Software (4th), Disaster Recovery (DR) Software (28th), Software Defined Storage (SDS) (19th), Copy Data Management (6th), File and Object Storage (23rd)

Mindshare comparison

ExaGrid EX Series and QoreStor aren’t in the same category and serve different purposes. ExaGrid EX Series is designed for Deduplication Software and holds a mindshare of 5.4%, down 8.7% compared to last year.
QoreStor, on the other hand, focuses on Storage Software, holds 12.4% mindshare, up 0.4% since last year.

Deduplication Software Mindshare Distribution
Product	Mindshare (%)
ExaGrid EX Series	5.4%
Dell PowerProtect Data Domain	20.9%
HPE StoreOnce	17.1%
Other	56.6%

Deduplication Software

Storage Software Mindshare Distribution
Product	Mindshare (%)
QoreStor	12.4%
DataCore SANsymphony	22.2%
NetApp ONTAP	20.0%
Other	45.4%

Storage 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

Marcus W

Works at a financial services firm with 11-50 employees

Backup storage has shrunk dramatically with deduplication but still needs stronger security options

The air gap feature is something I'd really like to see in QoreStor. There's no native air gap capability right now, and for security-conscious environments, that's a gap. The configuration export is also limited in QoreStor. If you want to document your setup or migrate configuration to a new instance, it requires more manual work than it should.

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

"ExaGrid has improved my organization in the way that we get reliable backups with very little administration."

"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."

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

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

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

"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 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."

More ExaGrid EX Series pros

"Quest QoreStor definitely saved us money."

"Not having to be onsite to swap tapes on a daily, weekly, or monthly basis, alone, has really paid for its usage through the savings in time."

"QoreStor has helped us to reduce our backup storage requirements on-premises. We've been using the same devices for quite a while, and so it lets us keep using them as opposed to having to rip out all that hardware and create a new on-prem solution. The advantage here is even if we had to retire the hardware tomorrow, the QoreStor part doesn't change. We just have to have additional hardware and put the solution back on whatever hardware we pick and it'll do the same thing."

"I would rate QoreStor a ten out of ten for what it offers for the price."

"The dedupe and compression are pretty extreme. On disk, we're getting dedupe rates of up to 65 percent of data and compression of 34 percent. When you go to the cloud, it's more like 76 percent for dedupe and almost 50 percent for compression."

"Deduplication is the most valuable feature. It saves us a lot of space. When we back up 100 terabytes of data, after dedupe, it only uses maybe five to six terabytes for the disk space in QoreStor."

"We need revisions and safe backup so that it could be held up in court, but deduplication and compression are the main features why we have Quest QoreStor. That's where it really shines. I use ZFS and XFS at home, and Quest QoreStor is even better."

"The features we use for the data deduplication are nice because we're able to back up a much larger amount of data, yet it doesn't necessarily take up that much data on the devices."

More QoreStor 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."

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

"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 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 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."

"The setup of the software is definitely not the easiest thing in the world."

"The management interface is in need of improvement. The graphical user interface (GUI) for the web management tools appears clunky, and not super intuitive."

"The installation could use improvement. The initial installation was a little touchy and it's not really user-installable. You have to have a connection to support to install."

"In terms of improvement, we would like to have an Air Gap feature to prevent a virus from attaching to something. So that when we don't do a backup, we want the QoreStor to stay offline. It would be a nice feature to have."

"The air gap feature is something I'd really like to see in QoreStor."

"They need to increase their maximum capacity. Other than that, they're doing a pretty good job."

"The importance of support is significant to me. I was working for a service provider, and all of our customers had a Quest or warning. Sometimes the support really underperforms."

"There can be some kind of monitoring solutions to alert users to issues with the appliance or software, making it easy for customers to monitor their systems in the field."

More QoreStor cons

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."

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

"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."

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

"Quest QoreStor's pricing is affordable. We evaluated Veeam, a well-known company for backup solutions, but found their pricing to be quite high. Veeam's price was almost double. For us, Quest QoreStor is very affordable."

"Its pricing model is very attractive. You have one price, and you get everything from QoreStor."

"The cost is per terabyte, and overall, the cost was reasonable when compared to some competitors."

"The pricing is good. It is competitive for a managed services provider. I like the ability to pay by the terabyte, allowing for an incremental cost that we and our customers can afford, so the solution grows with the customer."

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Top Industries

By visitors reading reviews

Manufacturing Company

18%

Financial Services Firm

Computer Software Company

Healthcare Company

Manufacturing Company

14%

Financial Services Firm

12%

Construction Company

10%

Comms Service Provider

10%

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	7
Midsize Enterprise	1
Large Enterprise	2

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 else besides data replication does QoreStor offer?

Quest QoreStor can be used for multiple things besides data replication. For example, it can be trusted to make a backup of your data. You know that replication and backups are different, right? Re...

See all answers

How does Quest QoreStore protect your data?

One of our favorite features of Quest QoreStore for data protection isn't the backup, actually, though we're using it actively (maybe just as much as data replication, to be honest). We absolutely ...

See all answers

How does Quest QoreStore solve repetitive data replicas?

When I first found out about data replication and the many benefits it had, I couldn't help but wonder - what about the copies you don't need? Like it's unavoidable for some of the copies to get da...

See all answers

Comparisons

Dell PowerProtect Data Domain vs ExaGrid EX Series

Compared 22% of the time

HPE StoreOnce vs ExaGrid EX Series

Compared 21% of the time

Quantum DXi Series vs ExaGrid EX Series

Compared 13% of the time

NetApp FAS Series vs ExaGrid EX Series

Compared 8% of the time

IBM ProtectTIER vs ExaGrid EX Series

Compared 2% of the time

More ExaGrid EX Series Competitors

Hitachi Universal Replicator vs QoreStor

Compared 4% of the time

Dell PowerProtect Data Domain vs QoreStor

Compared 4% of the time

Nutanix Unified Storage (NUS) vs QoreStor

Compared 3% of the time

DataCore SANsymphony vs QoreStor

Compared 3% of the time

HPE StoreOnce vs QoreStor

Compared 3% of the time

More QoreStor Competitors

Product Reports

Buyer's Guide

ExaGrid EX Series

June 2026

Download ExaGrid EX Series product report

Buyer's Guide

QoreStor

June 2026

Download QoreStor product report

Also Known As

EX Series

QoreStor

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

QoreStor optimizes storage costs through advanced deduplication and compression, seamlessly integrating with backup infrastructures and supporting diverse hardware. It enhances data security with replication and offers flexible deployment with minimal maintenance.

QoreStor offers significant benefits in deduplication, which leads to space savings and reduced storage expenses. This system integrates effortlessly with backup platforms like NetVault and Veeam, functioning as a reliable backup target for both on-premises and cloud environments. The ease of integration is complemented by its replication capabilities, which add a layer of data security by enabling geographically dispersed backups. Its cloud tiering functionality extends storage capabilities, ensuring cost-effectiveness compared to other solutions. While enhancements are needed in areas like Cloud Tier support, Air Gap features, and GUI intuitiveness, the continued developments aim to further optimize storage and backup solutions.

What are QoreStor's key features?

Deduplication and Compression: Achieves high deduplication rates and space savings.
Seamless Integration: Works well with diverse backup infrastructures.
Replication: Facilitates data security through multi-location backups.
Cloud Tiering: Extends storage capabilities efficiently.
Minimal Maintenance: Requires low maintenance efforts.

What benefits should be considered in user reviews?

Cost-Effectiveness: Offers competitive pricing and optimized storage.
Storage Optimization: Reduces storage needs with advanced data handling.
Flexibility: Supports diverse hardware and deployment options.
Data Security: Enhances protection with robust replication features.

QoreStor is widely implemented in industries for backup and restore operations, providing data deduplication and compression as key functionalities. Its integration as a backup target across platforms like NetVault and Veeam makes it ideal for enterprises that require efficient data management and storage cost control. Many organizations utilize its features to optimize cloud storage seamlessly while focusing on internal data handling or acting as service resellers.

Quest Software

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

American Airlines, at&t, Bank of America. Barclays, ebay, Ford

Buyer's Guide

Deduplication Software

May 2026

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