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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 June 2026, in the Blade Servers category, the mindshare of Cisco UCS B-Series is 7.3%, down from 8.3% compared to the previous year. The mindshare of Lenovo Flex System is 4.5%, up from 3.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Blade Servers Mindshare Distribution
ProductMindshare (%)
Cisco UCS B-Series7.3%
Lenovo Flex System4.5%
Other88.2%
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

"The solution is very unified and the technical team is very supportive, no help is needed from outside vendors."
"If we could get more reference architecture available on the portal, it would be helpful in making decisions"
"We work with this solution because we find that the technology is superior to others."
"I can connect Cisco UCS B-Series to multiple chassis and rack servers using a unified platform, then manage them on a single console."
"The most valuable features are monitoring and processing, which can handle a lot of throughput and are more powerful than the HPE series."
"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 architecture of this solution is very valuable; it has five traffic interconnects, and uses a network highway so bandwidth is never an issue."
"Great security and functionality."
"The most valuable feature of the Lenovo Flex System is the storage system."
"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."
"I have found the solution to be quite stable."
"The product is very user-friendly and has many resources at the enterprise level."
"The functionality is reliable and requires minimal support."
"It's stable, it works well, and we have had no problem with it for a long time."
"The Lenovo Flex System is very stable."
"I'd recommend Flex System to others as it's much better than any other product we've had and advise that they use XClarity for system management."
 

Cons

"Very tightly integrated, so once you are all in, you are likely to be there for a long time."
"Cisco is expensive and difficult to manage. The product is not intuitive. It also needs to improve storage management and upgrades."
"The initial setup is not easy."
"Previously, the unified port functionality allowed the same port to function as both FC and Ethernet, however, this has now changed."
"The configuration is a bit complex, as it requires very high technical expertise to apply it."
"The cost is expensive and has room for improvement."
"Initial setup was complex. UCS deployment and management requires deep knowledge of the platform."
"This model does not support virtualization of the switch."
"The product could improve its integration capabilities."
"I had some difficulties with the initial setup."
"Flex System's integration with the XClarity Management System could be improved."
"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 user interface needs improvement because they have an application from which we have to manage the whole system and all of the infrastructure."
"The solution could improve by providing more integration with other platforms."
"The price of the Lenovo Flex System could improve."
"The solution's firmware and driver upgrades are a bit difficult."
 

Pricing and Cost Advice

"We have to pay a monthly licensing fee for the solution."
"The cost of the blade servers is okay, but the cost of Fabric Interconnects ends up increasing the overall costs. For example, suppose it costs 3,500 USD per blade server. When you include the Fabric Interconnects, you could pay up to 30,000 USD. Therefore, compared to the cost of servers from Lenovo, Huawei, Dell, or HP, the cost of Cisco servers can be high. However, Cisco gives good discounts (about 90% to 94%) to partners and to customers who are already using Cisco servers. New Cisco customers do not get the level of discount that an existing customer does. Because you can get discounts with Cisco, I would give pricing a rating of four out of five."
"This is a premium device and our clients are not as concerned about the reasonableness of the price compared to satisfaction with their productivity."
"Cisco UCS B-Series is an expensive solution."
"Cisco products are at the high end in terms of cost, but everything is included with the licensing fees."
"Considering our market, I rate the pricing of Cisco UCS B-Series as a six."
"It makes much more sense for individual licenses for distributed environments"
"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."
"There is a one-off payment to buy the equipment and the support is purchased annually."
"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."
"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
14%
Financial Services Firm
13%
Marketing Services Firm
11%
Comms Service Provider
7%
Construction Company
16%
Financial Services Firm
11%
Manufacturing Company
11%
University
6%
 

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: June 2026.
900,838 professionals have used our research since 2012.