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IBM FlashSystem vs Oracle Sun ZFS Storage Appliance comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Feb 2, 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

IBM FlashSystem
Ranking in Modular SAN (Storage Area Network)
3rd
Average Rating
8.2
Reviews Sentiment
6.9
Number of Reviews
113
Ranking in other categories
NAS (6th), All-Flash Storage (10th)
Oracle Sun ZFS Storage Appl...
Ranking in Modular SAN (Storage Area Network)
9th
Average Rating
7.6
Reviews Sentiment
7.6
Number of Reviews
2
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of February 2026, in the Modular SAN (Storage Area Network) category, the mindshare of IBM FlashSystem is 12.5%, down from 19.8% compared to the previous year. The mindshare of Oracle Sun ZFS Storage Appliance is 5.6%, up from 3.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Modular SAN (Storage Area Network) Market Share Distribution
ProductMarket Share (%)
IBM FlashSystem12.5%
Oracle Sun ZFS Storage Appliance5.6%
Other81.9%
Modular SAN (Storage Area Network)
 

Featured Reviews

OmarIsmail1 - PeerSpot reviewer
Infrastructure Technical Specialist II at Clicks Group
Offers high performance and dependable support for fast storage needs
The most valuable feature of IBM FlashSystem is its robust back code. When integrated properly into the environment and configured according to the guidelines, it provides a very solid infrastructure that does the job on demand. Additionally, IBM FlashSystem offers competitive pricing and reliable performance. The hardware is dependable, ensuring that it functions effectively when the setup is done correctly.
RM
IT Consultant at a manufacturing company with 1,001-5,000 employees
A stable unified storage system that enables quick access to data
The main thing Oracle can improve is the cost. It would be better if Oracle opened up the system to enable integration with other vendors. Whether it's the database, application server, or storage appliance, they should make it easy to integrate them. They need to open up more to ensure that it can work in any environment and IT ecosystem.

Quotes from Members

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

Pros

"I rate the technical support from IBM as a ten."
"The valuable features for us are the extra add-ons, such as the FIM provisioning, the compression, the disaster recovery capabilities, and the storage pooling functions."
"IBM FlashSystem is a flexible solution with plenty of features."
"IBM FlashSystem is a stable solution."
"We are a 100% satisfied with the stability of the solution."
"This solution is really user friendly. It also offers good performance and is highly reliable."
"The performance is very good and we use this product to enhance our core system."
"The performance of IBM FlashSystem is very good. The new technology and high throughput have given us more confidence in the solution. The management of the system has improved and we can control the monitoring system alerts and multiple FlashSystems with the Enterprise Cloud Edition, which is free. The migration of recently stored data to a new flash is much easier. You can move your data because you can utilize it externally."
"I like its storage capacity, quick access to the data, speed, and overall storage management."
 

Cons

"There is room for improvement in the troubleshooting part, specifically related to IBM Spectrum for Insight."
"It could be easier to implement."
"The deduplication technology in IBM FlashSystem needs significant improvement."
"The pricing is high; storage solutions are always expensive. I do not know if the price needs to be reviewed, but it is worth considering."
"They don't offer subscription-based payments."
"Our model does not support compression or deduplication."
"I would like to see bigger modules."
"The customer's expectations are what they get on the cloud, they're expecting even in the on-premises deployments, going forward."
"The main thing Oracle can improve is the cost. It would be better if Oracle opened up the system to enable integration with other vendors. Whether it's the database, application server, or storage appliance, they should make it easy to integrate them. They need to open up more to ensure that it can work in any environment and IT ecosystem."
 

Pricing and Cost Advice

"We have no issues with the price as it is very competitive."
"I price of IBM FlashSystem is reasonable and competitive."
"My customers got the IBM FlashSystem bundle offer. It was a one-time purchase for three years of service. The price would depend on the storage size and could reach between $25,000 to $55,000."
"For a yearly license, it is about $100,000. There are no additional costs. The entire system is included."
"Overall the price of the solution is expensive and this includes the license."
"If five is a good price and one is a high price, I would rate the price a two or three out of five."
"Among IBM, Dell EMC, and Pure Storage, IBM is the cheapest. The price is also based on our location, the size of our entity, and our regular annual purchases from them. We are a very big IBM customer, so we normally get very high discounts. We are not a big customer of Pure Storage. We don't buy that much from Pure Storage per year. Everything is included in the price. There is no extra license for different functions."
"The tool is cost-efficient."
"The price could be better. We have many competing products now like Huawei and Dell EMC, and these are slightly cheaper."
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Top Industries

By visitors reading reviews
Computer Software Company
10%
Financial Services Firm
10%
Manufacturing Company
9%
Comms Service Provider
7%
No data available
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business47
Midsize Enterprise21
Large Enterprise59
No data available
 

Questions from the Community

What is your experience regarding pricing and costs for IBM FlashSystem?
The pricing is high; storage solutions are always expensive. I do not know if the price needs to be reviewed, but it is worth considering.
What needs improvement with IBM FlashSystem?
As far as I know, IBM FlashSystem has already improved, but I do not see room for improvement. It is simple to use and manage via SVC, simple to configure, and even for the zoning, I do not see imp...
Ask a question
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Also Known As

IBM Storwize
Sun ZFS Storage Appliance
 

Overview

 

Sample Customers

Celero, Friedhelm Loh Group, Clarks, Mingkang Natregro Health Food Group, Sofia, Etisalat Fights Fraud, UF Health Shands Hospital, Generali, Elecon Engineering Company Limited, Ventiv , Technology, CPFL Energia, Royal Caribbean Cruises Ltd., SciQuest, Coca-Cola Bottling Co. Consolidated, Paddy Power, Kelsey-Seybold Clinic, Interconnect Services, Severstal IP-Only AB, PVU Group GmbH
Translational Genomics Research Institute, Nara Institute of Science and Technology, CyberSolutions Inc., Y-Telecom, First Alliance Bank Zambia Limited, AZ Sint-Jan Brugge-Oostende, Mutlinet Pakistan, TDC A/S, Digi-Key Corporation, Thurgau Cantonal Bank
Find out what your peers are saying about IBM FlashSystem vs. Oracle Sun ZFS Storage Appliance and other solutions. Updated: February 2026.
882,594 professionals have used our research since 2012.