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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)
4th
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 March 2026, in the Modular SAN (Storage Area Network) category, the mindshare of IBM FlashSystem is 12.3%, down from 19.8% compared to the previous year. The mindshare of Oracle Sun ZFS Storage Appliance is 5.8%, up from 4.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Modular SAN (Storage Area Network) Mindshare Distribution
ProductMindshare (%)
IBM FlashSystem12.3%
Oracle Sun ZFS Storage Appliance5.8%
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

"The ease of use of the system: If you have a small storage team, then this is the platform for you, because it is really easy to manage, really easy to use, and it does not take a lot of training."
"The performance monitoring feature is useful as it can report in 15 minute intervals by hour, day, week, month, or by a custom date range."
"Storage virtualization simplifies space management, thin provisioning saves space, and copy services simplify environment replication."
"The most crucial feature of IBM FlashSystem is compression."
"Stability-wise, this solution is fine."
"It was quite easy to migrate from EMC storage because everything is virtualized."
"Most of the features for the reduction in data compression are useful. It is also very easy to use and administer. Its performance is also good."
"The initial setup is straightforward and can be done in an hour and a half by one person."
"I like its storage capacity, quick access to the data, speed, and overall storage management."
"Oracle Sun ZFS Storage Appliance is a very stable and durable product that's very strong and mature."
"Very good analytics Very easy to configure."
 

Cons

"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."
"Cloud file sharing is an area that needs improvement."
"The solution is not easy to use and could improve."
"In IBM FlashSystem, data reduction is an area with shortcomings where improvements can be made in the future."
"The deduplication and compression ratio is not very good. It's not reaching a very high ratio."
"IBM should improve its data reduction development."
"I have looked at a few pages of a report I download and I saw a graph there regarding software-defined vendors. IBM is not in a good position on this graph. I know that they are working very hard on this, to make it much better and to get to a level where it's not only hardware but also software to provide a complete solution."
"Support response times are bad."
"Uptime. We had some crashes here and there."
"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."
"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

"There are no licensing fees, it is a one-time purchase of the IBM FlashSystem."
"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."
"It pays to go back and get the best price you can from your supplier. The first offer is not always at the best discount."
"We have no issues with the price as it is very competitive."
"The integration is already included in the license cost of IBM FlashSystem. The integration is very easy. You get the IBM storage core with all software, firmware, and upgrades. EMC provides the features in the box, but they are not free for customers. There is a licensing cost for features. We have yearly licensing, but IBM has also provided a new option where you pay as you go. They provide a big box, and I pay, for example, for 10 terabytes. If I exceed 10 terabytes, IBM will charge for the new storage after 10 terabytes. It is a good opportunity in the market for using the storage as a cloud and paying as you go."
"The tool is cost-efficient."
"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."
"The cost of the IBM FlashSystem is lower than the HPE solution."
"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: March 2026.
885,264 professionals have used our research since 2012.