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Dell AppSync vs QoreStor comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jun 3, 2026

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 AppSync
Ranking in Copy Data Management
4th
Average Rating
8.4
Number of Reviews
10
Ranking in other categories
No ranking in other categories
QoreStor
Ranking in Copy Data Management
6th
Average Rating
8.0
Reviews Sentiment
7.2
Number of Reviews
10
Ranking in other categories
Backup and Recovery (50th), Data Replication (8th), Disk Based Backup Systems (7th), Storage Software (4th), Disaster Recovery (DR) Software (25th), Software Defined Storage (SDS) (18th), File and Object Storage (22nd)
 

Mindshare comparison

As of September 2026, in the Copy Data Management category, the mindshare of Dell AppSync is 14.3%, down from 18.2% compared to the previous year. The mindshare of QoreStor is 7.7%, up from 0.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Copy Data Management Mindshare Distribution
ProductMindshare (%)
Dell AppSync14.3%
QoreStor7.7%
Other78.0%
Copy Data Management
 

Featured Reviews

Rhett Waldock - PeerSpot reviewer
Programmer Analyst at Mankato Clinic, Ltd.
Simple to install, reliable, and has good technical support
There were some limitations in the product that prompted us to shift away from it. You could only have one AppSync profile per server to target where the data could be replicated to. There were a few specific feature limitations in terms of flexibility that required the development of an alternative. However, that was the only flaw. In relation to, the replication destinations. We wanted to collect data from multiple systems and then replicate it on a single system. AppSync was based on a one-to-one replication footprint, which was the limitation that we had encountered. We needed to combine several systems into one. That was one of the scenarios provided by the solution. I would like to have the ability to bit the same system with multiple AppSync replications would definitely be beneficial to us. And general flexibility enhancements.
MW
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.

Quotes from Members

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

Pros

"The automation of the replication process is the most valuable feature, as we just configure or schedule the replication process once and the work is done automatically."
"This solution is very helpful and easy to use."
"However if you wanted a reliable product to work with new or existing EMC products then I would recommend taking a look at Replication Manager."
"It gave us enough time to do the backup for big databases and mount them in a certain location, from there on tapes."
"It's integration with SQL and Exchange for VSS-based backup works perfectly, the agent is easy to install, the GUI is easy to navigate and debugging is easy to enable or disable."
"Simple to use and great product to provide application consistent replica."
"We have application consistent snaps of SQL mounted to development VM’s daily."
"It has excellent performance and reliability, and with a little more flexibility, it could be nearly perfect."
"Since we started to resell QoreStor, we have been using it internally; it's better than other backup solutions we have used or evaluated."
"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."
"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."
"If storage costs are a problem, whether on-premises or cloud, QoreStor is worth a serious look."
"Quest QoreStor definitely saved us money."
"Data deduplication and replication would be the top two features. The encryption and cloud tiering are also attractive for the future."
"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 to reduce our backup storage requirements on-premise by at least 90%."
 

Cons

"Yes. Periodically I needed to restart the agent on the client side and sometimes on the server side."
"I would like to have the ability to bit the same system with multiple AppSync replications would definitely be beneficial to us. And general flexibility enhancements."
"Simplify implementation."
"It would be helpful if this product has features for transferring to the cloud."
"There were some limitations in the product that prompted us to shift away from it."
"Each replication manager installation can only handle so many records. If you have over a certain number of bookmarks or snaps, the GUI becomes un-usable."
"When I deployed the Replication Manager and detected issues, I found that the technical support was not really helpful because they spent a lot of time to found a hotfix which resolved my problem."
"Mount replica function through EMC RM needs to be faster because when you are using Veritas volumes with mirrors the mount routine is too late (the mount process time is directly proportional the volume size when you are using Veritas Volume Manager (vxvm))."
"The air gap feature is something I'd really like to see in QoreStor."
"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."
"Overall, I am happy with this solution, but a way to export configuration settings would be beneficial."
"The ransomware protection of QoreStor could use improvement."
"Support is one point of improvement for Quest QoreStor. Support is sometimes not adequate."
"The setup of the software 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."
"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."
 

Pricing and Cost Advice

"I believe we paid them on a yearly basis."
"The cost is per terabyte, and overall, the cost was reasonable when compared to some competitors."
"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 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
Financial Services Firm
18%
Construction Company
10%
Manufacturing Company
9%
Outsourcing Company
7%
Manufacturing Company
14%
Comms Service Provider
12%
Financial Services Firm
10%
Construction Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business3
Midsize Enterprise1
Large Enterprise6
By reviewers
Company SizeCount
Small Business7
Midsize Enterprise1
Large Enterprise2
 

Questions from the Community

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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...
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 ...
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...
 

Also Known As

AppSync, Replication Manager
QoreStor
 

Overview

 

Sample Customers

Getronics
American Airlines, at&t, Bank of America. Barclays, ebay, Ford
Find out what your peers are saying about Dell AppSync vs. QoreStor and other solutions. Updated: September 2026.
914,109 professionals have used our research since 2012.