Dell PowerProtect Data Domain vs QoreStor comparison

Dell Technologies and Quest Software are both solutions in the Disk Based Backup Systems category. Dell Technologies is ranked #1 with an average rating of 8.8, while Quest Software is ranked #8 with an average rating of 7.0. Dell Technologies holds a 38.8% mindshare in DBBS, compared to Quest Software’s 2.2% mindshare. Additionally, 90% of Dell Technologies users are willing to recommend the solution, compared to 100% of Quest Software users who would recommend it.

Dell PowerProtect Data Domain

Read 87 Dell PowerProtect Data Domain reviews

10,864 Views
3,368 Comparison Views

90% willing to recommend

QoreStor

Read 9 QoreStor reviews

2,214 Views
133 Comparison Views

100% willing to recommend

Dell PowerProtect Data Domain

QoreStor

Comparison Buyer's Guide

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Executive SummaryUpdated on Feb 8, 2026

Dell PowerProtect Data Domain and QoreStor compete in the data protection category, offering distinct advantages. Dell PowerProtect Data Domain may have the edge in robustness and reliability with its superior integration capabilities and comprehensive support.

Features: Dell PowerProtect Data Domain offers advanced deduplication, compression, and seamless integration with various backup software. Its replication capabilities ensure data security during failures. QoreStor provides significant storage reduction through its efficient deduplication and compression, with flexible deployment across multiple hardware platforms and integration with leading backup solutions.

Room for Improvement:Dell PowerProtect Data Domain could enhance its price structuring, cloud compatibility, and the user interface's simplicity. Improvements in real-time online backup performance and ransomware protection are also suggested. QoreStor requires enhancements in ransomware protection and support responsiveness, along with advanced monitoring solutions and configuration export functionalities.

Ease of Deployment and Customer Service: Dell PowerProtect Data Domain is known for robust customer service with responsive and proactive technological support. Its deployment is straightforward and reliable. QoreStor is noted for deployment flexibility across both cloud and physical setups, though improving the escalation process in customer support would enhance user experience.

Pricing and ROI: Dell PowerProtect Data Domain delivers substantial ROI through reduced backup sizes and quicker recovery despite higher initial costs, making it more suitable for large enterprises. QoreStor offers cost-efficient licensing, scalable based on usage, appealing especially to managed service providers, ensuring affordability as data grows.

To learn more, read our detailed Dell PowerProtect Data Domain vs. QoreStor Report (Updated: February 2026).

Buyer's Guide

Dell PowerProtect Data Domain vs. QoreStor

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

Dell PowerProtect Data Domain

Ranking in Disk Based Backup Systems

1st

Average Rating

8.6

Reviews Sentiment

6.7

Number of Reviews

Ranking in other categories

Deduplication Software (1st)

QoreStor

Ranking in Disk Based Backup Systems

8th

Average Rating

8.2

Reviews Sentiment

7.3

Number of Reviews

Ranking in other categories

Backup and Recovery (54th), Data Replication (11th), Storage Software (6th), Disaster Recovery (DR) Software (31st), Software Defined Storage (SDS) (21st), Copy Data Management (6th), File and Object Storage (22nd)

Mindshare comparison

As of February 2026, in the Disk Based Backup Systems category, the mindshare of Dell PowerProtect Data Domain is 38.8%, down from 41.0% compared to the previous year. The mindshare of QoreStor is 2.2%, up from 0.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Disk Based Backup Systems Market Share Distribution
Product	Market Share (%)
Dell PowerProtect Data Domain	38.8%
QoreStor	2.2%
Other	59.0%

Disk Based Backup Systems

Featured Reviews

Branko Cirovic

Storage Engineer at Comtrade Group

Provides seamless backup integration and long-term reliability for enterprise data protection

The price is quite high; this product is not considered cheap. Additionally, if you use higher availability boxes, they also come at a premium price. However, they provide business continuity, which is the main reason why companies invest in this solution. Tape is slow; when restoring several virtual machines or databases amounting to several terabytes, Dell PowerProtect Data Domain represents the fastest and most reliable solution, ensuring great integration with backup software. If a customer has limited budget constraints, they may opt for cheaper external storage comprised of just a bunch of disks and utilize it for backup, as backup is not a business-critical service. However, I see great value in Dell PowerProtect Data Domain because it is fully automated, features great integration with backup software, and provides good value for money. I would rate software support as a ten, while I would give hardware support a seven. I never give any product a perfect score; I think Dell PowerProtect Data Domain deserves a nine. The only minor problems are the certificate issue and the price. These certificate issues are quite rare and mainly arise when we forget to restart and upgrade the box for several years.

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Calvin Hilgenstock

System Administrator at a wholesaler/distributor with 10,001+ employees

Cost savings and efficient data management improve operations but support quality varies

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. I always had to get it escalated or ask for someone specifically because those other people would just read knowledge-based articles that I had already done myself. Quest QoreStor does not work with any backup software, server, or storage hardware. It has the hardware compatibility list, and you need a specific number of IOPS, so it needs to run on decent hardware at least to have enough input-output operations. Otherwise, the setup result will be canceled. I'm not too sure if there are still physical appliances, but when I first started, we had some customers with a physical Quest QoreStor appliance, and it would only run on certain hardware. It doesn't work with every backup program. For example, Veritas Backup Exec is incompatible, but Veeam is compatible, and V Ranger is compatible as well. I didn't even know that Quest QoreStor has any static AI and behavioral AI technologies.

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Quotes from Members

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

Pros

"We have never had any issues with Data Domain. It has been stable."

"Dell PowerProtect DD is a stable solution."

"My favorite feature on Dell PowerProtect Data Domain is the deduplication capability, which is a particularly good feature to have."

"The backup is very secure. The deduplication using EMC is very good. We are able to make systems and handle random cloning. EMC is a very stable solution for making backups."

"The stability is excellent."

"The solution can scale up to one petabyte right now. It's very good for enterprise-level organizations."

"Most cases are related to databases, such as Oracle and MySQL."

"The solution is very scalable."

More Dell PowerProtect Data Domain pros

"The extreme compression of data is a big thing for us. We were looking for an online backup solution, and QoreStor is very good in terms of data compression. It helps us minimize the required storage in the Blob Storage environment."

"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."

"Quest QoreStor is very stable compared to our previous solution."

"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."

"Data deduplication and replication would be the top two features. The encryption and cloud tiering are also attractive for the future."

"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."

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

"Quest QoreStor definitely saved us money."

More QoreStor pros

Cons

"It helps if you have in-depth knowledge in order to use it correctly."

"When you use Data Domain, you have to have at least 20% free space so it can work properly. Sometimes we struggle with that, because we wanted to use all the free space, but then Data Domain becomes really slow. I understand that 20% is needed to process all the data, and doing the duplication and compression and all that, but it would be a big improvement if they did not require that 20%, because it is just too much to have available."

"DD Boost."

"Data Domain lacks compatibility with fiber channels and tapes. We can't use it with a tape library. That's an issue in Latin America sometimes because a lot of clients still use tapes for budget reasons. Maybe they have a lot of archives. In North America and Europe, they do a lot of archiving, but they use the cloud more than we do. Sometimes we have to put together a Frankenstein where we connect another server to the tape library and send all the data there."

"They're scalable."

"If I were a manager for this infrastructure, I would look into load balancing for cost, maintenance after sale, and improving Dell PowerProtect DD."

"Dell PowerProtect DD (Data Domain) is expensive. Also, it has a sort of a big physical footprint that data domains have, and that's part of the problem."

"Looking at Dell PowerProtect DD (Data Domain), there is a need for improvement, especially in terms of protection from cyber resiliency, cyber recovery, or man-in-the-middle attacks."

More Dell PowerProtect Data Domain cons

"The setup of the software is definitely not the easiest thing. I worked a lot with Quest engineers, especially in the early days when we were first testing it and trying it out. I actually had some of the developers working with us at one point because they were going through these point releases, and I was having trouble getting it to work in this S3-compatible situation. We got it all working eventually, but setup is definitely not the easiest thing in the world."

"Overall, I am happy with this solution, but a way to export configuration settings would be beneficial. After everything is set up and configured, there should be a way to export the configuration. In case something happens to the QoreStor server, and we need to reinstall and configure everything, being able to import the configuration would be helpful. This feature does not currently exist."

"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."

"They could improve on support a little bit. We have not had to engage their support much, but when we do have issues, it can take longer to get things resolved."

"The ransomware protection of QoreStor could use improvement."

"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."

"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."

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

More QoreStor cons

Pricing and Cost Advice

"Pricing is related to size. A lower range solution might be about $33,000. My customers use higher range versions with a price of around $100,000. That's the price for both the hardware and software."

"The approximate license cost for Dell PowerProtect DD (Data Domain) is around 5,00,000."

"The solution is expensive. However, if you pay less you receive less, it is cost-effective."

"The price is really high compared to other vendors. The licensing cost is huge. Normal, mid-tier companies or small-scale companies wouldn't be able to afford it easily."

"The price of the backup appliance is slightly expensive. Compared to other vendors, the pricing will be slightly higher."

"Becoming more expensive."

"The pricing is cost-effective for the solution"

"The price of the solution and support for Dell PowerProtect DD is expensive. We have customers that cannot upgrade to a newer version of the solution because the support is too expensive."

More Dell PowerProtect Data Domain pricing and cost advice

"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."

"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."

"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."

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Top Industries

By visitors reading reviews

Computer Software Company

11%

Financial Services Firm

10%

Manufacturing Company

10%

Government

Performing Arts

11%

Computer Software Company

Manufacturing Company

Educational Organization

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	35
Midsize Enterprise	23
Large Enterprise	38

By reviewers
Company Size	Count
Small Business	5
Midsize Enterprise	1
Large Enterprise	2

Questions from the Community

What is your primary use case for Dell EMC PowerProtect DD (Data Domain)?

I work as an implementer of Dell PowerProtect Data Domain systems, storage, and backup systems, serving as an administrator and support specialist. I have 15 years of experience implementing Data D...

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What do you like most about Dell PowerProtect DD (Data Domain)?

The product, a disk backup solution, improves our data application tasks. We used tape libraries with Dev drives in legacy architectures, resulting in slow backups compared to modern drives like NV...

See all answers

What is your experience regarding pricing and costs for Dell PowerProtect DD (Data Domain)?

Regarding the pricing for Dell PowerProtect Data Domain, it is expensive. For small clients, it is very expensive. Large clients find it not expensive, but it depends on the solution in the environ...

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...

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Veeam Data Platform vs Dell PowerProtect Data Domain

Compared 5% of the time

ExaGrid EX Series vs Dell PowerProtect Data Domain

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Compared 5% of the time

HPE StoreOnce vs QoreStor

Compared 4% of the time

Hitachi Universal Replicator vs QoreStor

Compared 4% of the time

Dell Avamar vs QoreStor

Compared 4% of the time

Fivetran vs QoreStor

Compared 4% of the time

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Product Reports

Buyer's Guide

Dell PowerProtect Data Domain

February 2026

Download Dell PowerProtect Data Domain product report

Buyer's Guide

QoreStor

January 2026

Download QoreStor product report

Also Known As

DataDomain, Dell EMC Data Domain, PowerProtect Data Domain

QoreStor

Overview

Dell PowerProtect Data Domain is the leading backup appliance built for powerful cyber resilience and seamless integration into on-premises environments. It supports both traditional and modern workloads, simplifying operations while reducing risks and costs.

Dell PowerProtect Data Domain offers scalable storage capabilities that integrate smoothly with backup systems. Its deduplication and compression technologies enhance storage efficiency by significantly reducing data volumes. Users appreciate its secure data protection, excellent deduplication and compression, efficient data replication, and the DD Boost protocol for faster data transfer. However, feedback suggests improvements are needed in areas like complex VTL tape addition, high pricing, and challenging cloud integration. The implementation may benefit from boosted processing power and enhanced ransomware protection.

What are the key features of Dell PowerProtect Data Domain?

Deduplication and Compression: Significantly reduces data volumes, optimizing storage usage.
Efficient Data Replication: Enhances data protection by securely transferring data across locations.
DD Boost Protocol: Promotes faster data transfer, streamlining backup processes.
Scalable Storage: Adapts to varying data capacities, ensuring growth accommodation.
Secure Data Protection: Safeguards data with robust encryption and protection features.

What benefits should be expected from Dell PowerProtect Data Domain?

Space and Cost Savings: Achieves reductions in data footprint, lowering storage expenses.
Reliable Backup and Recovery: Provides consistent and fast data backup and restoration capabilities.
Seamless Integration: Operates smoothly with existing backup software and environments.
Data Security: Offers comprehensive data protection to ensure business continuity.

Dell PowerProtect Data Domain is widely employed across various sectors like banking, finance, and government for its backup, deduplication, and archiving functions. Organizations utilize it with software like Veeam and NetWorker to optimize bandwidth, manage large data capacities, and deliver secure, reliable backup features, supporting both on-premises and hybrid deployments.

Dell Technologies

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

The US Army, City of Houston, Lloyds TSB, TiVo, Teck, Ingram Entertainment, The New York Mets

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

Buyer's Guide

Dell PowerProtect Data Domain vs. QoreStor

February 2026

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