Try our new research platform with insights from 80,000+ expert users

Fujitsu Server GS21 vs IBM Z comparison

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

Fujitsu Server GS21
Ranking in Mainframes
2nd
Average Rating
0.0
Number of Reviews
0
Ranking in other categories
No ranking in other categories
IBM Z
Ranking in Mainframes
1st
Average Rating
10.0
Number of Reviews
1
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of December 2025, in the Mainframes category, the mindshare of Fujitsu Server GS21 is 23.8%, down from 29.2% compared to the previous year. The mindshare of IBM Z is 36.5%, down from 38.7% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Mainframes Market Share Distribution
ProductMarket Share (%)
IBM Z36.5%
Fujitsu Server GS2123.8%
Other39.7%
Mainframes
 

Featured Reviews

Use Fujitsu Server GS21?
Leave a review
DS
Manager CICS Support at Blue Cross Blue Shield of Illinois
Provides processing of mission critical applications.
Batch DB Online systems. Provides processing of mission critical applications. Ability to handle heavy mixed workloads. More graphical, user-friendly, interface for systems changes. However, IBM is attempting to do this via OSMF.
report
Use our free recommendation engine to learn which Mainframes solutions are best for your needs.
879,310 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
No data available
Financial Services Firm
12%
Computer Software Company
12%
Media Company
7%
Manufacturing Company
7%
 

Company Size

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

Also Known As

GS21 2400, GS21 2600
No data available
 

Overview

 

Sample Customers

Information Not Available
Fujitsu