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Datto SIRIS vs Nasuni 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
7.5
Nasuni users enjoy cost savings, increased productivity, and efficiency from reduced labor, cloud scalability, and improved data management.
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
8.2
Nasuni's customer service is praised for responsiveness and professionalism, efficiently solving issues with reliable and knowledgeable support.
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
 

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
7.3
Nasuni offers scalable, user-friendly data storage, efficiently meeting diverse organizational needs and supporting physical or virtual deployments.
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
I rated the scalability as seven because even though the solution can scale, load balancing must be done manually, as it's not automated.
Infrastructure Architect at a energy/utilities company with 10,001+ employees
 

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
8.2
Nasuni is praised for its stability, offering reliable performance, minimal maintenance, and flexibility with virtually no downtime issues.
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.
Nasuni struggles with cloud integration, performance, and user experience, needing improvements in data retention, security, and analytics.
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
I suggest Nasuni improve their syslog forwarders to support TCP protocol, as it's more secure than UDP, which is plain text and not protected at all.
Infrastructure Architect at a energy/utilities company with 10,001+ employees
 

Setup Cost

Datto SIRIS offers fair pricing and seamless setup, but lengthy contracts and MSP upcharges might deter some SMB clients.
Nasuni offers competitive pricing with flexible cloud compatibility, licensing per terabyte, and cost-effective enterprise solutions.
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
I prefer solutions with lower pricing.
Infrastructure Architect at a energy/utilities company with 10,001+ employees
 

Valuable Features

Datto SIRIS offers reliable, efficient backup and recovery with user-friendly features, excellent security, support, and competitive cost-effectiveness.
Nasuni provides scalable cloud-based file management with global file locking, data security, and efficient disaster recovery features.
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 features I find most valuable in Nasuni are the unlimited snapshots, antivirus capabilities, auditing, and ransomware protection.
Infrastructure Architect at a energy/utilities company with 10,001+ employees
 

Categories and Ranking

Datto SIRIS
Ranking in Disaster Recovery (DR) Software
10th
Average Rating
9.0
Reviews Sentiment
5.3
Number of Reviews
10
Ranking in other categories
Backup and Recovery (7th), Disk Based Backup Systems (3rd), Disaster Recovery as a Service (3rd), MSP Backup (2nd)
Nasuni
Ranking in Disaster Recovery (DR) Software
20th
Average Rating
8.8
Reviews Sentiment
7.4
Number of Reviews
36
Ranking in other categories
File System Software (2nd), NAS (10th), Cloud Migration (8th), Cloud Storage (13th), Cloud Backup (35th), Cloud Storage Gateways (3rd)
 

Mindshare comparison

As of May 2026, in the Disaster Recovery (DR) Software category, the mindshare of Datto SIRIS is 1.4%, up from 0.0% compared to the previous year. The mindshare of Nasuni is 2.6%, up from 1.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Disaster Recovery (DR) Software Mindshare Distribution
ProductMindshare (%)
Datto SIRIS1.4%
Nasuni2.6%
Other96.0%
Disaster Recovery (DR) Software
 

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.
SD
Infrastructure Architect at a energy/utilities company with 10,001+ employees
Cloud data management that achieves cost efficiency with advanced data protection features
I am currently using Nasuni for seismic data. We have a huge data size, and we want to reduce costs. Nasuni acts as a caching solution, so we put some data into the cache, and the rest goes to the blob, which helps us save on costs. We use it for applications like Petrol and Tech Log, where 3D…
report
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893,164 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Construction Company
14%
Manufacturing Company
12%
Financial Services Firm
10%
Media Company
9%
Financial Services Firm
12%
Computer Software Company
11%
Construction Company
10%
Manufacturing Company
8%
 

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 Business3
Midsize Enterprise8
Large Enterprise24
 

Questions from the Community

What is your experience regarding pricing and costs for Datto SIRIS?
The pricing offered to MSPs for Datto SIRIS is okay, but the ability for MSPs, their upcharge when it comes down to small, medium businesses, SMB clients, is actually putting Datto out of the marke...
What needs improvement with Datto SIRIS?
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 ent...
What is your primary use case for Datto SIRIS?
The use cases for Datto SIRIS that we set up are that we back up all emails for 365, certain devices such as servers and data stores that are high priority. We ensure all of those are backed up, an...
Does Nasuni have a good pricing model?
Based on the experience of my organization, Nasuni is definitely worth the money, since it gives you an all-in-one solution where you'd usually need several programs. About the cost, there isn't a ...
Is it easy to restore files with Nasuni?
As someone who has used this feature of Nasuni I can tell you - yes, it's good for file recovery and you'll definitely benefit from very quick times. I can't tell you if it's the best one because I...
What features and services does Nasuni offer?
Hi, if you pick Nasuni, you'll be benefiting from many services for a good price. Well, it's a personalized price you get after an agreement with the company but in my organization's case, it is a ...
 

Comparisons

 

Also Known As

SIRIS
No data available
 

Overview

 

Sample Customers

Datapac, Dynamic Business Technologies, SAX Technology Advisors
American Standard, CBRE, Cushman & Wakefield, E*TRADE, Ithaca Energy, McLaren Construction, Morton Salt, Movado, Urban Outfitters, Western Digital
Find out what your peers are saying about Datto SIRIS vs. Nasuni and other solutions. Updated: April 2026.
893,164 professionals have used our research since 2012.