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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

"UCS has made it possible to replace and upgrade servers quickly and easily while keeping things up and running for the enterprise."
"None of them have come close to the combination of performance and reliability that I get from Cisco."
"Combined with Nexus switches, it provides us with a versatile solution for a virtual platform including SAN fabric capability built in, networking flexibility and SDN, and is better to management."
"The solution is very reliable in comparison to the other brands."
"Cisco provides good flexibility to choose different products or different equipment within the blade servers, like CPU memory, logic board, etc., to make your own server."
"Overall service and support from Cisco is very good."
"The UCS B-Series is easy to scale; we have approximately 1,000 people using this solution, and it is used on a daily basis."
"The solution's most valuable feature is KVM Launch Manager."
"The functionality is reliable and requires minimal support."
"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 initial setup is straightforward."
"We are using Lenovo Flex System for our internal platform where we store our operating systems, Windows, Linux, and VMware, and then virtualize our machines."
"The stability and speed are always good. The processor is good and it's still working with our loads."
"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."
 

Cons

"Right now, the market is rapidly transitioning to solid-state media and the Cisco options tend to be less varied and more expensive than a broader slate of products from HP, Dell or IBM."
"USC Central seems a bit confusing for technicians."
"Compared to the deployment of servers such as Dell XCDs, the deployment of UCS servers is more complex. They take longer to deploy."
"The initial setup process is complex."
"The upgrades could be improved."
"The initial setup and service profile deployment can be tricky and should be improved for ease of use."
"The cost of the solution has room for improvement."
"The license is expensive. Cisco should decrease the delay in the delivery of their products."
"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 installation was not easy."
"The solution's firmware and driver upgrades are a bit difficult."
"The user interface needs improvement because they have an application from which we have to manage the whole system and all of the infrastructure."
"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."
 

Pricing and Cost Advice

"The product is expensive."
"From a business point of view, the price is on the higher end."
"The cost of the Cisco UCS B-Series is comparable to HP solutions but higher than Dell solutions."
"Pricing will be based on your requirements so it is important to plan, engage, and negotiate directly with the Cisco Account Manager."
"The type of service level purchase will determine the level of support response that you receive from Cisco."
"This is a premium device and our clients are not as concerned about the reasonableness of the price compared to satisfaction with their productivity."
"It is expensive."
"We have to pay a monthly licensing fee for the solution."
"The price is interesting. I am able to quote a client based on their needs and offer them either Lenovo or Dell."
"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 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."
"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."
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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.
908,877 professionals have used our research since 2012.