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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)
2nd
Average Rating
8.2
Reviews Sentiment
6.9
Number of Reviews
112
Ranking in other categories
NAS (6th), All-Flash Storage (13th)
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 October 2025, in the Modular SAN (Storage Area Network) category, the mindshare of IBM FlashSystem is 15.1%, down from 17.5% compared to the previous year. The mindshare of Oracle Sun ZFS Storage Appliance is 4.7%, up from 3.7% 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 FlashSystem15.1%
Oracle Sun ZFS Storage Appliance4.7%
Other80.2%
Modular SAN (Storage Area Network)
 

Featured Reviews

OmarIsmail1 - PeerSpot reviewer
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
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 initial setup was really straightforward. It was not complex. Deployment took one month, due to the data migration duration."
"IBM FlashSystem 5300 is offered at a very low cost in Israel, which is advantageous for small companies."
"IBM FlashSystem has been stable in our operations."
"IBM FlashSystem is a powerful effective storage solution. Additionally, it is user-friendly, anyone can use it."
"The most valuable features are deduplication and compression."
"The valuable features of IBM FlashSystem include flash copy mapping, which is a procedure to collect instant point-in-time data for testing real data."
"The most valuable features of IBM FlashSystem are performance and security."
"This solution is really user friendly. It also offers good performance and is highly reliable."
"I like its storage capacity, quick access to the data, speed, and overall storage management."
 

Cons

"The ease of installation should be improved. We had issues with the configuration model."
"The support could improve by allowing you to speak to someone when you call rather than them calling you back. However, once we do have contact with one of their technicians they are excellent."
"The only issue my team faced was transferring the data from the old system to IBM FlashSystem, which is an area for improvement in the solution."
"The product could be cheaper."
"The deduplication and compression ratio is not very good. It's not reaching a very high ratio."
"The product needs to improve their scalability."
"The Data Reduction Pools (DRP) support could be better."
"IBM should improve its data reduction development."
"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

"IBM V7000 has a new license and price structure which provides intuitive licensing based on the functions customers wish to enable and use the most."
"The pricing may be a bit higher than other brands. If you compare the IBM FlashSystems in midrange with Dell EMC in midrange, IBM costs a bit more, but I prefer IBM because it has more specs that I can benefit from."
"The pricing is competitive in our country."
"The price of IBM FlashSystem is reasonable."
"I find the pricing of the solution to be very reasonable."
"The total storage capacity vs price is still quite high for the IBM Flash Array."
"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."
"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
13%
Financial Services Firm
11%
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 Enterprise22
Large Enterprise57
No data available
 

Questions from the Community

What needs improvement with IBM FlashSystem?
Some improvements are required in IBM regarding response time and resolution time, though not about competence. Product-wise, it performs well. We have not used AI features yet, and I believe havin...
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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: September 2025.
868,787 professionals have used our research since 2012.