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QoreStor pros and cons

Vendor: Quest Software

4.0 out of 5

10 reviews
100% willing to recommend

Pros & Cons summary

QoreStor excels in data deduplication, offering over 90% savings on backup storage and seamless integration with backup software. Its flexible deployment on diverse hardware, including virtual machines, suits varied infrastructure. Users appreciate its stability and efficient data management. However, improvements are needed in installation ease, storage capacity, ransomware protection, and monitoring solutions. An Air Gap feature for virus protection during non-backup periods and enhanced user-friendliness are desirable enhancements.

Buyer's Guide

Get pricing advice, tips, use cases and valuable features from real users of this product.

Prominent pros & cons

PROS

Data deduplication in QoreStor is highly valued for significantly reducing storage space, with reports of saving over 90% on backup storage requirements.

QoreStor offers seamless integration with various backup software, enhancing compatibility with existing workflows and processes.

The flexibility of QoreStor is notable, as it can be deployed on different types of hardware, including virtual machines, making it convenient for diverse infrastructure needs.

Customers have highlighted QoreStor's effective data compression and deduplication, achieving significant savings in both on-premises and cloud storage environments.

QoreStor is praised for providing stability and efficiency, ensuring data is easily managed, backed up, and securely accessible when needed.

CONS

They would like to have an Air Gap feature to prevent a virus from attaching when QoreStor is not backing up, allowing it to stay offline.

The maximum capacity of QoreStor needs to be increased to meet larger storage demands.

Installation of QoreStor requires improvement as the initial setup was difficult, requiring support assistance, and is not user-friendly.

Ransomware protection could be improved in QoreStor to ensure better data security.

The need for monitoring solutions that alert users to issues with QoreStor would make system management easier in the field.

QoreStor Pros review quotes

MW

Works at a financial services firm with 11-50 employees

May 26, 2026

If storage costs are a problem, whether on-premises or cloud, QoreStor is worth a serious look.

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CTO at EDSI

Nov 21, 2024

This software solution can be installed on many different types of hardware, which makes it very flexible. We can run it on virtual machines or virtual servers, providing convenience for solutions of varying sizes, from small to large.

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Technical Manager at a computer software company with 51-200 employees

Dec 2, 2024

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.

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CH

Calvin Hilgenstock

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

Apr 17, 2025

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.

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PL

IT Solution Manager at CONEXION PERU TI

Sep 7, 2023

It integrates with various backup software solutions, which makes it compatible with existing backup workflows and processes.

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ST

Sylvain Tetreault

Chief Operating Officer at ETINET

May 20, 2021

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

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IT Manager at a manufacturing company with 201-500 employees

Sep 2, 2021

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.

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Director of IT at a non-profit with 1-10 employees

Jun 10, 2021

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.

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Manager, IT Systems Services at a university with 1,001-5,000 employees

Apr 19, 2021

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.

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Executive Director at Fenway Library Organization Inc

Apr 14, 2021

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.

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QoreStor Cons review quotes

MW

Works at a financial services firm with 11-50 employees

May 26, 2026

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

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CTO at EDSI

Nov 21, 2024

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.

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Technical Manager at a computer software company with 51-200 employees

Dec 2, 2024

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.

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Free Report: QoreStor Reviews and More

Learn what your peers think about QoreStor. Get advice and tips from experienced pros sharing their opinions. Updated: June 2026.

900,747 professionals have used our research since 2012.

CH

Calvin Hilgenstock

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

Apr 17, 2025

Support is one point of improvement for Quest QoreStor. Support is sometimes not adequate.

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PL

IT Solution Manager at CONEXION PERU TI

Sep 7, 2023

The ransomware protection of QoreStor could use improvement.

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ST

Sylvain Tetreault

Chief Operating Officer at ETINET

May 20, 2021

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

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IT Manager at a manufacturing company with 201-500 employees

Sep 2, 2021

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

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Director of IT at a non-profit with 1-10 employees

Jun 10, 2021

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.

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Manager, IT Systems Services at a university with 1,001-5,000 employees

Apr 19, 2021

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.

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Executive Director at Fenway Library Organization Inc

Apr 14, 2021

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.

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