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Datto SIRIS vs Hornetsecurity Altaro VM Backup comparison

 

Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

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

ROI

Sentiment score
3.4
Datto SIRIS significantly reduces management needs and costs, enhancing efficiency and performance for businesses reliant on its solution.
Sentiment score
6.9
Hornetsecurity Altaro VM Backup enhances productivity and ROI by reducing recovery failures, troubleshooting time, and overall costs.
I estimate that Datto SIRIS has saved around 50% of the time in our processes, as two people can manage everything efficiently, while previously we would have needed eight to ten people without Datto SIRIS.
Infrastructure Engineer at Neurealm
Definitely, the return on investment has been massive.
Managing Director at HB Technologies
 

Customer Service

Sentiment score
6.8
Datto SIRIS customer service is highly rated for its speed, effectiveness, and reliable support during maintenance and recovery processes.
Sentiment score
8.3
Hornetsecurity Altaro VM Backup's customer service is praised for prompt, effective responses, though regional sanctions may limit access.
I had a memorable experience with customer support during the bare-metal recovery, and the support was brilliant.
VoIP phone IT manager at Fusion 2K
The customer support of Datto SIRIS is very high-level.
Engineer at a renewables & environment company with 51-200 employees
The speed of technical support was excellent.
President & CEO at a tech vendor with 51-200 employees
Technical support is rated an eight out of ten.
Manager at a tech vendor with 1-10 employees
 

Scalability Issues

Sentiment score
4.9
Datto SIRIS offers flexible scalability, with options varying by provider, allowing easy upgrades, but older versions may limit growth.
Sentiment score
8.3
Hornetsecurity Altaro VM Backup offers scalability, easy management, high reliability, but may struggle in high-end enterprise environments.
You can expand it as much as you can expand it, but if you get the Datto SIRIS 3, it's not going to be as good as the enterprise version of Datto SIRIS 5.
Cyber Security Consultant
The contracts are flexible enough to upgrade or downgrade the product without too much of a penalty.
Managing Director at HB Technologies
Scalability is dependent on the cloud provider we are using, so it cannot be solely judged through Datto SIRIS.
AI/ML Engineer at IT BY DESIGN
 

Stability Issues

Sentiment score
7.2
Datto SIRIS is reliable and stable, automating backups to prevent failures without user-reported downtime or outages.
Sentiment score
7.4
Hornetsecurity Altaro VM Backup is stable, highly rated for performance, with minimal issues, especially on Hyper-Visor systems.
We have automated all our backups, so we do not encounter any issues with backup failures.
AI/ML Engineer at IT BY DESIGN
I haven't had any issues or seen any issues with the ones over the past four or five years.
Cyber Security Consultant
 

Room For Improvement

Datto SIRIS struggles with Mac OS backup, performance, high costs, and requires faster recovery and better integration tools.
Hornetsecurity Altaro VM Backup needs enhancements in file restore, recovery speed, platform support, scalability, pricing, and user interface.
The backup of the Mac OS solution in Datto SIRIS doesn't exist at this moment.
Engineer at a renewables & environment company with 51-200 employees
Saying that it is the network is not detailed enough. We need more specific information about the network.
President & CEO at a tech vendor with 51-200 employees
Strengthening security to enhance the product's overall effectiveness in backup and disaster management.
Infrastructure Engineer at Neurealm
The solution needs multi-platform support as it is currently only available for VMware and Hyper-V.
Regional Sales Manager at S2
Hornetsecurity Altaro VM Backup could be improved in several areas, such as enhancing scalability features.
Manager at a tech vendor with 1-10 employees
 

Setup Cost

Datto SIRIS offers fair pricing and seamless setup, but lengthy contracts and MSP upcharges might deter some SMB clients.
Hornetsecurity Altaro VM Backup is affordable, offers a free version for two VMs, and has variable regional pricing.
The only issue is that a lot of people are looking to cut costs, especially right now, and Datto has priced itself out of one of the largest parts of the U.S. market.
Cyber Security Consultant
It's a high-level solution, and the price is correct for me.
Engineer at a renewables & environment company with 51-200 employees
Thoughts on pricing indicate that it is handled by a different team, varies based on specific solutions and storage capacities selected by organizations, and is generally fairly priced for the value provided.
Infrastructure Engineer at Neurealm
The pricing of the solution is considered affordable.
Manager at a tech vendor with 1-10 employees
The pricing and licensing cost is challenging since most competitors offer cheaper pricing, making it difficult to penetrate the market with the current pricing strategy.
Regional Sales Manager at S2
 

Valuable Features

Datto SIRIS offers reliable, efficient backup and recovery with user-friendly features, excellent security, support, and competitive cost-effectiveness.
Hornetsecurity Altaro VM Backup offers robust VM backup features, including easy setup, strong compression, and ransomware protection.
My experience with the one-click disaster recovery feature is that it simplifies the process significantly, allowing for rapid recovery and integration with backup and disaster recovery solutions, automating tasks while providing security against various threats.
Infrastructure Engineer at Neurealm
In the last six years, none of my customers faced a ransomware attack, and we use this functionality for system outages and physical server crashes.
System Engineer II at a tech services company with 1,001-5,000 employees
The reporting via email from Datto SIRIS for me, my customer, and my team shows that every single backup is okay or if there is a problem because the snapshot for the server is broken or another problem that I can address systematically.
Engineer at a renewables & environment company with 51-200 employees
The ability to perform data compression updates enhances overall efficiency and effectiveness.
Manager at a tech vendor with 1-10 employees
It provides storage for Office 365, which is beneficial, and the deduplication technology is excellent.
Regional Sales Manager at S2
 

Categories and Ranking

Datto SIRIS
Ranking in Backup and Recovery
7th
Ranking in Disaster Recovery (DR) Software
10th
Average Rating
9.0
Reviews Sentiment
5.3
Number of Reviews
10
Ranking in other categories
Disk Based Backup Systems (3rd), Disaster Recovery as a Service (4th), MSP Backup (2nd)
Hornetsecurity Altaro VM Ba...
Ranking in Backup and Recovery
35th
Ranking in Disaster Recovery (DR) Software
19th
Average Rating
8.6
Reviews Sentiment
7.6
Number of Reviews
31
Ranking in other categories
Cloud Backup (30th)
 

Mindshare comparison

As of August 2026, in the Backup and Recovery category, the mindshare of Datto SIRIS is 0.7%, up from 0.0% compared to the previous year. The mindshare of Hornetsecurity Altaro VM Backup is 0.9%, up from 0.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Backup and Recovery Mindshare Distribution
ProductMindshare (%)
Datto SIRIS0.7%
Hornetsecurity Altaro VM Backup0.9%
Other98.4%
Backup and Recovery
 

Featured Reviews

James Melton - PeerSpot reviewer
Cyber Security Consultant
Reliable backups have protected email and servers and now enable rapid ransomware recovery
For the smaller Datto SIRIS devices that are made for backing up one or maybe two different machines, adding more RAM and giving it a better CPU would be phenomenal. Sometimes when dealing with entry-level Datto SIRIS products, you face an issue depending on how much storage there is on there when it's trying to parse through all of the data. It takes a while, and when it comes to data recovery, time is everything. Datto SIRIS should remove the ability to set it up as a NAS-based file share operation system. It seems counterintuitive for something that is made for immutable storage that is walled off so that it can't be destroyed to be allowed to be a local centralized file share that individuals have access to. This seems to be begging for a mishap. Datto SIRIS will require some maintenance when the hard drive gets past 50% capacity, which is Datto's statement on the capacity. You should never use past 50% of the storage locally. Then you have to reach out to Datto directly to get an external hard drive to transfer files to send off the data for it to be shot up to the cloud. We've had a couple of instances of devices not uploading to the cloud because either they were too full or there were failures in certain parts of the file upload to the cloud, which put it into a circle of death where it just kept trying to do the same thing over and over again and had to request assistance from Datto in those situations. Otherwise, if you store it in a dusty cabinet, you have to spray it with a computer duster every once in a while.
Asif Usmani - PeerSpot reviewer
Regional Sales Manager at S2
Lacks multi-platform support and physical infrastructure but excels in storage optimization
We use it for VM backup and Office 365 backup I find the solution to be user-friendly and easy to manage and deploy. It provides storage for Office 365, which is beneficial, and the deduplication technology is excellent, especially in optimizing storage capacity compared to others. In terms of…
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Top Industries

By visitors reading reviews
Construction Company
14%
Manufacturing Company
13%
Outsourcing Company
9%
Financial Services Firm
8%
Construction Company
14%
Comms Service Provider
12%
Outsourcing Company
9%
Manufacturing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business7
Midsize Enterprise1
Large Enterprise1
By reviewers
Company SizeCount
Small Business22
Midsize Enterprise4
Large Enterprise4
 

Questions from the Community

What is your experience regarding pricing and costs for Datto SIRIS?
My experience with pricing, setup cost, and licensing is very straightforward. The only thing I would prefer is if the contracts were 12 months instead of 36.
What needs improvement with Datto SIRIS?
At this stage, there is no improvement needed for Datto SIRIS. Cost is a consideration, but in general, we are fairly happy with the value. My experience with pricing, setup cost, and licensing is ...
What is your primary use case for Datto SIRIS?
Our main use case for Datto SIRIS is both on-premises and cloud-based.
What is your experience regarding pricing and costs for Hornetsecurity Altaro VM Backup?
The pricing and licensing cost is challenging since most competitors offer cheaper pricing, making it difficult to penetrate the market with the current pricing strategy.
What needs improvement with Hornetsecurity Altaro VM Backup?
The solution needs multi-platform support as it is currently only available for VMware and Hyper-V. It also lacks support for physical servers and workstations. Additionally, they should add more p...
 

Also Known As

SIRIS
Altaro VM Backup
 

Overview

 

Sample Customers

Datapac, Dynamic Business Technologies, SAX Technology Advisors
Thomson Reuters, Microsoft, Amazon, Harvard University, MIT, Peugeot, Xerox
Find out what your peers are saying about Datto SIRIS vs. Hornetsecurity Altaro VM Backup and other solutions. Updated: August 2026.
909,725 professionals have used our research since 2012.