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Hitachi ShadowImage vs QoreStor comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Aug 19, 2025

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

Hitachi ShadowImage
Ranking in Data Replication
8th
Average Rating
8.0
Reviews Sentiment
6.8
Number of Reviews
2
Ranking in other categories
No ranking in other categories
QoreStor
Ranking in Data Replication
12th
Average Rating
8.2
Reviews Sentiment
7.3
Number of Reviews
9
Ranking in other categories
Backup and Recovery (53rd), Disk Based Backup Systems (8th), Storage Software (5th), Disaster Recovery (DR) Software (30th), Software Defined Storage (SDS) (23rd), Copy Data Management (6th), File and Object Storage (23rd)
 

Mindshare comparison

As of September 2025, in the Data Replication category, the mindshare of Hitachi ShadowImage is 5.0%, down from 6.0% compared to the previous year. The mindshare of QoreStor is 1.6%, up from 0.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Data Replication Market Share Distribution
ProductMarket Share (%)
Hitachi ShadowImage5.0%
QoreStor1.6%
Other93.4%
Data Replication
 

Featured Reviews

Bratislav Petkovic - PeerSpot reviewer
Efficient replication and helpful for improving data processing and management
The technology behind Hitachi ShadowImage has been around for a long time, and while it works correctly, it does have some issues. We have experienced problems with it, even though Hitachi provides good hardware. Technical support could also be improved, as it sometimes takes a few days to resolve issues.
Jeff Manuszak - PeerSpot reviewer
Cost-efficient, highly scalable, and installable on different types of hardware
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. We are pretty lenient as we do a lot of IT support ourselves. We are not very hard on support organizations, but when a customer has a support issue, it would be easier if the support processes were a little bit more automated. It would be beneficial to have an easier way to upload diagnostic dump files. They can make it easy for the customer to collect the diagnostic data. 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. This is especially critical because it stores customers' backups, and a failure can have significant business impacts. If a customer does not have the backups and has a disaster, they can be out of business, so monitoring is key.

Quotes from Members

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

Pros

"The most valuable feature of Hitachi ShadowImage is high-speed data transfer from one server to another. Other solutions would have problems with transferring 50 TB of data. I also like that Hitachi ShadowImage is easy to use."
"The most valuable features are its ability to handle large databases efficiently and the asynchronous replication capability."
"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."
"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."
"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."
"It integrates with various backup software solutions, which makes it compatible with existing backup workflows and processes."
"Quest QoreStor definitely saved us money."
"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."
"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."
 

Cons

"API and script configuration in Hitachi ShadowImage is sometimes complicated, so this is an area for improvement. Another area for improvement is that the Hitachi ShadowImage interface isn't as user-friendly."
"We have experienced problems with it, even though Hitachi provides good hardware."
"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."
"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."
"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 ransomware protection of QoreStor could use improvement."
"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."
"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."
"They need to increase their maximum capacity. Other than that, they're doing a pretty good job."
"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."
 

Pricing and Cost Advice

"I don't have pricing information for Hitachi ShadowImage because my manager handled it."
"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 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."
"Its pricing model is very attractive. You have one price, and you get everything from QoreStor."
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Top Industries

By visitors reading reviews
No data available
Performing Arts
15%
Computer Software Company
10%
Real Estate/Law Firm
6%
Manufacturing Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business5
Midsize Enterprise1
Large Enterprise2
 

Questions from the Community

What is your experience regarding pricing and costs for Hitachi ShadowImage?
The pricing of Hitachi ShadowImage is reasonable, especially when you purchase Hitachi storage, as ShadowImage and Thin Image are part of the protector. The protector includes several components li...
What needs improvement with Hitachi ShadowImage?
The technology behind Hitachi ShadowImage has been around for a long time, and while it works correctly, it does have some issues. We have experienced problems with it, even though Hitachi provides...
What is your primary use case for Hitachi ShadowImage?
We use Hitachi ShadowImage for data replication processes. It is a practical tool for copying data from one LUN disk to another within the same storage. In our bank, we utilize it for making tests ...
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

No data available
QoreStor
 

Overview

 

Sample Customers

K&H, NCF, Aokang Group
American Airlines, at&t, Bank of America. Barclays, ebay, Ford
Find out what your peers are saying about Hitachi ShadowImage vs. QoreStor and other solutions. Updated: September 2025.
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