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Cisco UCS B-Series vs Lenovo Flex System comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Feb 3, 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

Cisco UCS B-Series
Ranking in Blade Servers
5th
Average Rating
8.6
Reviews Sentiment
6.4
Number of Reviews
74
Ranking in other categories
No ranking in other categories
Lenovo Flex System
Ranking in Blade Servers
9th
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 August 2026, in the Blade Servers category, the mindshare of Cisco UCS B-Series is 7.5%, down from 8.2% compared to the previous year. The mindshare of Lenovo Flex System is 4.4%, up from 3.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Blade Servers Mindshare Distribution
ProductMindshare (%)
Cisco UCS B-Series7.5%
Lenovo Flex System4.4%
Other88.1%
Blade Servers
 

Featured Reviews

MB
Head of IT Operations at NCC BANK LIMITED
Efficient server management reduces costs and supports seamless operations
Cisco UCS B-Series has reliably sustained smooth operations without the need for significant maintenance. Its administration capabilities provide easy access to performance reports, logs, and utilization data, which are essential for effective server management. Additionally, the integration capabilities are seamless, and the power consumption and heat generation are low, resulting in reduced cooling costs and increased financial benefits.
FA
Senior System Administrator at Khushhali Microfinance Bank
Used to run the compute load on servers, but firmware and driver upgrades are a bit difficult
We use the solution for multiple purposes, such as in the virtualization cluster and the standalone applications We use the solution as a compute model to run the compute load on servers. The solution's firmware and driver upgrades are a bit difficult. I have been using Lenovo Flex System for…

Quotes from Members

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

Pros

"Customers see benefits in the reduced time to deploy virtual servers."
"If we could get more reference architecture available on the portal, it would be helpful in making decisions"
"The solution has the ability to reuse or divide the networking, making it a flexible networking environment."
"The ratio in terms of the number of units and the number of servers that we can get each chassis is quite good."
"The most valuable feature is the ability to replace a server with another one, simply by applying the profile."
"The most beneficial feature is UCS Manager. It's the best way to manage hardware, creating group policies, like scrub policies and maintenance policies."
"The product is easy to use."
"From a return on investment perspective, Cisco UCS B-Series is worth the money."
"The product is very user-friendly and has many resources at the enterprise level."
"It's stable, it works well, and we have had no problem with it for a long time."
"It comes at a good price. We didn't face any problems with this product."
"The most valuable feature of the Lenovo Flex System is the storage system."
"One of the most valuable features of this solution is its ease of use."
"We use the solution as a compute model to run the compute load on servers."
"I have found the solution to be quite stable."
"The functionality is reliable and requires minimal support."
 

Cons

"The initial setup and service profile deployment can be tricky and should be improved for ease of use."
"The solution’s pricing could be improved and made cheaper."
"Integration with storage could be improved."
"There are some shortcomings in the product when you look at it from the perspective of the area involving multiple configurations, making it an aspect where improvements are required."
"The UCS Manager is written in Java and has many problems after the new Java releases."
"The GUI is not the greatest."
"Integration with the storage to get a heatmap of what's going on in the storage site could be improved -- the dashboard, that kind of thing."
"Cisco could improve the user-friendliness for less experienced users."
"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."
"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."
"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 solution could improve by providing more integration with other platforms."
"The installation was not easy."
"The solution's firmware and driver upgrades are a bit difficult."
"The product could improve its integration capabilities."
 

Pricing and Cost Advice

"From a business point of view, the price is on the higher end."
"It is not a yearly subscription but a yearly support renewal that you need to do for Cisco UCS B-Series."
"The product is expensive."
"The licensing cost is a little bit expensive because by default, it depends on your fabric interconnect model. Most of the time, however, Cisco provides a lot of promotions to the customers, so the cost can be waived for many projects. The price of the chassis itself is fair."
"UCS is expensive, and we will be migrating to the cheaper HP servers."
"There is a need to pay towards the licensing costs of the solution on a yearly basis. Price-wise, it is an expensive product"
"A physical licensing fees needs to be paid."
"Every three years, I need to renew my license and support the product...Every time I have to opt for the renewal of the license, I am shocked to learn about the increase in the price of the product."
"There is a one-off payment to buy the equipment and the support is purchased annually."
"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."
"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."
"We are just paying the operational cost, which is not much."
"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 price is interesting. I am able to quote a client based on their needs and offer them either Lenovo or Dell."
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Top Industries

By visitors reading reviews
Construction Company
15%
Financial Services Firm
11%
Marketing Services Firm
9%
Manufacturing Company
7%
Construction Company
16%
Manufacturing Company
13%
Financial Services Firm
11%
Outsourcing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business21
Midsize Enterprise15
Large Enterprise41
By reviewers
Company SizeCount
Small Business3
Large Enterprise7
 

Questions from the Community

What is your experience regarding pricing and costs for Cisco UCS B-Series?
Comparing Cisco UCS B-Series with traditional servers, while its initial cost may be slightly higher, it is not as expensive as Oracle Exadata, making it a worthwhile investment. It pays off in the...
What needs improvement with Cisco UCS B-Series?
There is a need for Cisco UCS B-Series to evolve and scale vertically, particularly with the increasing data demands and the integration of AI, ensuring the solution remains certified and capable u...
What is your primary use case for Cisco UCS B-Series?
The Cisco UCS B-Series servers are used to run backend databases ranging from small, medium, to large, running different versions of RDBMS such as Oracle, SQL, MySQL. It also includes cloud databas...
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.
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.
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.
 

Also Known As

UCS B-Series, Unified Computing System B-Series
Flex System Blade Servers, Flex System SN Series
 

Overview

 

Sample Customers

Aegean Motorway, Anilana Hotels and Resorts, Anonymous Banking Group, Artoni Transporti, Bellevue, BH Telecom, Bowling Green State University, Children's Hospital Colorado, City of Biel, Dimension Data, Dualtec Cloud Builders, Hertz, Houston Methodist, Kuwait Petroleum Italia, Lufthansa Systems GmbH & Co.KG, Outscale, Sony Corporation, Talbots
Information Not Available
Find out what your peers are saying about Cisco UCS B-Series vs. Lenovo Flex System and other solutions. Updated: August 2026.
908,858 professionals have used our research since 2012.