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Amazon FSx vs Oracle ZFS 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 File System Software
5th
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
4
Ranking in other categories
Cloud Storage (15th), File and Object Storage (17th)
Oracle ZFS
Ranking in File System Software
4th
Average Rating
9.0
Reviews Sentiment
6.2
Number of Reviews
6
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of June 2026, in the File System Software category, the mindshare of Amazon FSx is 5.9%, up from 5.7% compared to the previous year. The mindshare of Oracle ZFS is 8.6%, down from 9.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
File System Software Mindshare Distribution
ProductMindshare (%)
Oracle ZFS8.6%
Amazon FSx5.9%
Other85.5%
File System Software
 

Featured Reviews

MuhammadAzhar Khan - PeerSpot reviewer
Senior DevOps Engineer at Alibaba Group
Shared storage capabilities provide enterprise value with good reliability
Amazon FSx is more costly compared to other storage solutions like EBS or EFS. The auto-scaling feature should be improved, as it currently includes downtime. I need to manually increase the storage, which is not ideal. Integrating FSx with Windows Server is challenging; it's a long process involving Active Directory (AD) setup and synchronization.
DK
IT Infrastructure Manager at National Investment Bank
Efficient setup and seamless performance ensure an outstanding experience
Everything in Oracle ZFS is great and it's easy to use, making it very user-friendly. I have used Oracle ZFS Snapshot and Rollback capabilities, and everything has worked well. The Snapshot and Rollback features in Oracle ZFS are awesome - that's one word to describe it. It's cool, very easy, and stress-free. Without doing benchmarks with other products, I can rate data compression in Oracle ZFS about an eight or nine out of ten, and I have noticed some deduplication and indexing features. Regarding how Oracle ZFS handles demanding workloads, such as online transaction processing and complex query executions, most of these aspects depend on your configuration setup. For instance, if you are using virtualization and have enterprise solutions on these servers, you can route or place database servers on SSDs or flash disks to enable better throughput from these systems. You can run your operating system on flash disks, or alternatively save ordinary data on SATA disks, depending on where you place your valuable data. The structure will affect performance, so if you plan it properly, you can achieve the best performance, even if the systems are aging or if you don't have the compute power, you can still balance it.

Quotes from Members

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

Pros

"On a scale of one to ten, I would rate Amazon FSx a ten."
"The shared storage capability is highly valuable."
"I rate the stability of Amazon FSx ten out of ten."
"We used it for disaster recovery perspective behind a number of resources, like batch services and RDS."
"FSx operates as an independent service, not tied to any server, which eliminates dependencies between applications for storage."
"Everything in Oracle ZFS is great and it's easy to use, making it very user-friendly."
"The replication capability and data security have been the most valuable features."
"Oracle ZFS is very fast and it is efficient. It has outperformed any hardware array controller that I've ever come across. With Oracle ZFS on my NAS, which is running five, four terabyte drives, when I've had a drive failure and changed one out, it'll rebuild that array in two hours, or maybe less. When you think you're rebuilding almost four terabytes of data redundancy, that's pretty good using an old AMD Turion hardware, that's nothing to complain about."
"It is a pooled storage model and volumes are no longer needed, so thousands of file systems can draw from a common storage pool, each one consuming only as much space as it actually needs."
"Oracle is one of the most stable storage solutions that I have comes across."
"Oracle ZFS is highly stable; the solution is phenomenal in terms of picking up the warnings on pending drive failure through smart monitoring, and when you pull the drive out and rebuild the array with the new drives, it's been incredibly fast and I have not lost data."
"Simply amazing filesystem."
"It is not necessarily for the fastest storage or cluster storage, but just for pure storage, it's really hard to beat. It's just been around as long as anything else."
 

Cons

"I've been facing a challenge when doing a failover from FSx side. AWS console does not refresh within a half hour."
"Amazon FSx is more costly compared to other storage solutions like EBS or EFS."
"From my experience, there are areas in Amazon FSx where more performance is needed, as they will be looking for higher IOPS."
"A direct FTP feature would be beneficial instead of relying on transmission services."
"If I run ZFS drives, I find my RAM usage is very high."
"Oracle ZFS does what I've asked it to do, and it has done it very efficiently. The only time I'm running into issues is with Proxmox. If I run ZFS drives, I find my RAM usage is very high. However, I don't have that problem with the TrueNAS system, where I'm running an old N36 Turion with four gigabytes of RAM, and that's running 24/7. There have been no issues with such a low-powered environment there, it works fine, but with Proxmox it seems to go slow."
"Drive scrubbing needs to be run every week for consumer drives, and every month for enterprise drives."
"While we did not experience any performance issues with ZFS, it seems it is quite possible to run into performance issues especially with NFS mounts."
"ZFS is great for just mass storage, but if you're trying to make fast storage – something like a SAN-type delivery network where you wanted to do any type of RAM disc over the network – it falls flat. ZFS does not do that. It is kind of limiting."
"When retrieving data from the replication of remote sites, it does not give you immediate results. The RPO and RTO rates could be improved."
 

Pricing and Cost Advice

"The lowest price I have paid is $370 or $380 per month, while the highest can exceed $3,000 per month."
Information not available
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Top Industries

By visitors reading reviews
Financial Services Firm
16%
University
9%
Manufacturing Company
7%
Retailer
7%
Financial Services Firm
22%
Construction Company
10%
Manufacturing Company
9%
Healthcare Company
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business6
Large Enterprise1
 

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...
What needs improvement with Oracle ZFS?
From my experience, we consumers will only ask for one thing from Oracle ZFS: cost improvements. Regarding the cost, making it 50 percent less would be beneficial, as it cannot be free.
What is your primary use case for Oracle ZFS?
Our main use case for Oracle ZFS is that it's just normal storage for the entire infrastructure, so we have our systems connected to it.
What advice do you have for others considering Oracle ZFS?
Oracle ZFS is easy to scale; you can just get the modules and add them to increase the capacity, and that's it. It's just seamless. To summarize, I can advise those who want to use Oracle ZFS to co...
 

Comparisons

 

Also Known As

Amazon FSx for Windows File Server, Amazon FSx for Lustre
ZFS
 

Overview

 

Sample Customers

Neiman Marcus, T Mobile, Docxellent, Matrix, Lyell
Specialized Bicycle Components Inc., Hospital AlemÊo Oswaldo Cruz, DB Schenker Rail, Asia Commercial Bank, First Alliance Bank Zambia Limited, Ricoh Company Ltd., CyberSolutions Inc., NARA INSTITUTE of SCIENCE and TECHNOLOGY, SunGard Availability Services, B&H PhotoVideo,
Find out what your peers are saying about Amazon FSx vs. Oracle ZFS and other solutions. Updated: June 2026.
900,747 professionals have used our research since 2012.