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Amazon FSx vs IONOS S3 Object Storage 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:
 

Categories and Ranking

Amazon FSx
Ranking in Cloud Storage
15th
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
4
Ranking in other categories
File System Software (5th), File and Object Storage (15th)
IONOS S3 Object Storage
Ranking in Cloud Storage
22nd
Average Rating
0.0
Number of Reviews
0
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of April 2026, in the Cloud Storage category, the mindshare of Amazon FSx is 4.1%, up from 2.8% compared to the previous year. The mindshare of IONOS S3 Object Storage is 1.3%, up from 0.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Cloud Storage Mindshare Distribution
ProductMindshare (%)
Amazon FSx4.1%
IONOS S3 Object Storage1.3%
Other94.6%
Cloud Storage
 

Featured Reviews

SB
Senior Design Engineer at Clovertex
Provides seamless research data management with effortless setup
From my experience, there are areas in Amazon FSx where more performance is needed, as they will be looking for higher IOPS. Sometimes we go with Weka or other solutions due to this need, so it should have more IO capacity when there is a demand. More performance is needed specifically in the IO area.
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Top Industries

By visitors reading reviews
Financial Services Firm
11%
Manufacturing Company
10%
University
9%
Retailer
8%
No data available
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
No data available
 

Questions from the Community

What needs improvement with Amazon FSx?
From my experience, there are areas in Amazon FSx where more performance is needed, as they will be looking for higher IOPS. Sometimes we go with Weka or other solutions due to this need, so it sho...
What is your primary use case for Amazon FSx?
Our customers mainly use Amazon FSx for high-performance computing. Our customers are mainly in the Life Science and Pharma industries. The majority of people are looking at S3 as their destination...
What advice do you have for others considering Amazon FSx?
There is an ongoing project where my customers are exploring the FSx solution, but not yet for AI-driven projects; they plan to in the future. For those who want to use Amazon FSx, I recommend it a...
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Also Known As

Amazon FSx for Windows File Server, Amazon FSx for Lustre
No data available
 

Overview

 

Sample Customers

Neiman Marcus, T Mobile, Docxellent, Matrix, Lyell
Information Not Available
Find out what your peers are saying about Dropbox, Google, NetApp and others in Cloud Storage. Updated: March 2026.
885,667 professionals have used our research since 2012.