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Fujitsu Primergy BX400 Series vs Lenovo Flex System comparison

Fujitsu and Lenovo are both solutions in the Blade Servers category. Fujitsu is ranked #15, while Lenovo is ranked #10 with an average rating of 8.7. Fujitsu holds a 0.8% mindshare in Blade Servers, compared to Lenovo’s 3.0% mindshare. Additionally, 100% of Lenovo users are willing to recommend the solution.
Fujitsu Primergy BX400 Series
Read 3 Fujitsu Primergy BX400 Series reviews
  • 174 Views
  • 174 Comparison Views
0% willing to recommend
Lenovo Flex System
Read 10 Lenovo Flex System reviews
  • 393 Views
  • 393 Comparison Views
100% willing to recommend
 

Comparison Buyer's Guide

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Executive SummaryUpdated on Feb 3, 2025

The Fujitsu Primergy BX400 Series and Lenovo Flex System are competing enterprise server solutions. Lenovo Flex System appears to have an advantage due to its advanced features, offering enhanced capabilities for enterprises.

Features: Fujitsu Primergy BX400 Series is known for its energy efficiency, modular design, and scalability, making it ideal for data-intensive applications. Lenovo Flex System distinguishes itself with robust integration capabilities, advanced storage options, and superior customization potential, emphasizing versatile configuration.

Ease of Deployment and Customer Service: Lenovo Flex System offers streamlined deployment with extensive documentation and comprehensive support services, allowing smoother integration into existing IT environments. Fujitsu Primergy BX400 Series provides good service but involves a more conventional setup process that might require additional customization.

Pricing and ROI: Fujitsu Primergy BX400 Series presents a lower initial setup cost, offering competitive ROI for budget-conscious enterprises. Lenovo Flex System has a higher upfront cost, justified by its scalable features and long-term performance benefits, suggesting greater value and potentially higher ROI.

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To learn more, read our detailed Fujitsu Primergy BX400 Series vs. Lenovo Flex System Report (Updated: September 2025).
Buyer's Guide
Fujitsu Primergy BX400 Series vs. Lenovo Flex System
September 2025
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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 Primergy BX400 Series
Ranking in Blade Servers
15th
Average Rating
8.0
Reviews Sentiment
6.7
Number of Reviews
3
Ranking in other categories
No ranking in other categories
Lenovo Flex System
Ranking in Blade Servers
10th
Average Rating
8.4
Reviews Sentiment
7.7
Number of Reviews
10
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of October 2025, in the Blade Servers category, the mindshare of Fujitsu Primergy BX400 Series is 0.8%, down from 0.8% compared to the previous year. The mindshare of Lenovo Flex System is 3.0%, down from 3.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Blade Servers Market Share Distribution
ProductMarket Share (%)
Lenovo Flex System3.0%
Fujitsu Primergy BX400 Series0.8%
Other96.2%
Blade Servers
 

Featured Reviews

Cyrille Darmon - PeerSpot reviewer
A highly stable solution with technical support that is not only good but also always available to help the product's users
My company's IT activities are carried out with the help of the solution. My company's customers use the solution in their telecom department or for telecommunication purposes The most valuable feature of the solution is its stability. The initial setup of Fujitsu Primergy BX400 Series should be…
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Syed Ibrahim - PeerSpot reviewer
Provides a high initial ceiling before upscaling is required, user-friendly and rich in resources, but has occasional stability issues
The solution should come with cloud native applications to prepare for cloud based solutions. Forced restarts due to free upgrades is an issue that needs to be resolved. We can manage this as we have high availability and redundancy, but without that it could be a real problem. The level of customer support needs to be improved. There is currently an issue with Lenovo switching out SAN switches from the chassis, which will cause problems for people who already have a set up with the SAN switch connected to the central storage. This could require an entirely different network, adding an additional cost for the user.
Read full review

Quotes from Members

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

Pros

"The most valuable feature of the solution is its stability."
"Fujitsu Primergy BX400 Series has two processors."
"One of the most valuable features of this solution is its ease of use."
"The product is very user-friendly and has many resources at the enterprise level."
"It comes at a good price. We didn't face any problems with this product."
"The stability and speed are always good. The processor is good and it's still working with our loads."
"The Lenovo Flex System is very stable."
"The functionality is reliable and requires minimal support."
"The initial setup is straightforward."
"Flex System's best features are its performance and stability."
More Lenovo Flex System pros
 

Cons

"It can have more automation. In addition, Fujitsu should have a broader portfolio, not specifically in terms of the service solutions, but more in terms of the big picture. A broader portfolio would be nice for providing different solutions for the customers."
"The initial setup of Fujitsu Primergy BX400 Series was complex."
"I had some difficulties with the initial setup."
"The user-interface needs improvement, because they have an application from which we have to manage the whole system and all the infrastructure. This application is not working at our premises, because of some problem with the hardware itself. So although we brought it with our systems, and we used it to manage all the systems: the storage, the switches, and everything, nevertheless we have to support every part alone and enter the interface in one-by-one."
"The solution could improve by providing more integration with other platforms."
"The product could improve its integration capabilities."
"Flex System's integration with the XClarity Management System could be improved."
"Continuing the production of this product is necessary. It is currently out of support, and we are seeking support from other sources besides Lenovo."
"The most valuable feature of the Lenovo Flex System is the storage system."
"Forced restarts due to free upgrades is an issue that needs to be resolved. We can manage this as we have high availability and redundancy, but without that it could be a real problem."
More Lenovo Flex System cons
 

Pricing and Cost Advice

"There are special licenses that are connected to the usage. We installed Fujitsu Primergy BX400 Series for a high PC solution, and for this reason, some Microsoft licenses and other special licenses were embedded or bundled to the Fujitsu solution."
"No license is required to operate the product."
"The price is interesting. I am able to quote a client based on their needs and offer them either Lenovo or Dell."
"The 14 blade server allows significant room for upscaling before having to invest in another chassis. You would have to purchase another chassis much sooner in the case of an eight or nine blade server."
"There is a one-off payment to buy the equipment and the support is purchased annually."
"We have the whole maintenance for the 3 years, starting the deployment. We also have the VMware license for 3 years and I think we have another license to buy. There are no additional costs besides licensing."
"The is an annual license cost to use the Lenovo Flex System. If the price was less expensive and flexible overall and for additional features, our customers would be happier."
"We are just paying the operational cost, which is not much."
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Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business3
Large Enterprise7
 

Questions from the Community

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What is your experience regarding pricing and costs for Lenovo Flex System?
Compared to its quality, the pricing is very reasonable and represents good value.
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What needs improvement with Lenovo Flex System?
Continuing the production of this product is necessary. It is currently out of support, and we are seeking support from other sources besides Lenovo.
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What is your primary use case for Lenovo Flex System?
We are using Lenovo Flex System on the server for our VMware environment, which includes our VMs and all our servers, Linux and Windows. It manages the daily operation efficiently.
See all answers
 

Comparisons

No data available
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HPE Superdome X vs Lenovo Flex System
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HPE Synergy vs Lenovo Flex System Logo
HPE Synergy vs Lenovo Flex System
Compared 47% of the time
More Lenovo Flex System Competitors
 

Product Reports

Buyer's Guide
Blade Servers
October 2025
Fujitsu Primergy BX400 Series reportDownload Fujitsu Primergy BX400 Series product report
Buyer's Guide
Blade Servers
October 2025
Lenovo Flex System reportDownload Lenovo Flex System product report
 

Also Known As

No data available
Flex System Blade Servers, Flex System SN Series
 

Overview

Managing large computing and storage requirements with limited resources, budgets and space is a challenge. The Fujitsu Server PRIMERGY BX400 helps to solve it. It is a fully-featured blade system built from the ground up as a user-friendly and versatile IT infrastructure. Up to eight server and storage blades are all packed into a surprisingly small enclosure that is as easy to install and manage as it is to use.

Fujitsu

Flex System is Lenovo’s proven, 2nd generation blade, that efficiently runs your infrastructure applications with up to 80% better density than standard rack server deployments.

Lenovo
 

Sample Customers

Sultan Qaboos University Hospital, Tokyo Stock Exchange, RAF St. Mawgan, King Fahad Medical City, St. Bede’s Catholic High School, 
Information Not Available
Buyer's Guide
Fujitsu Primergy BX400 Series vs. Lenovo Flex System
September 2025
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