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Cisco UCS E-Series Servers 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 E-Series Servers
Ranking in Blade Servers
10th
Average Rating
8.2
Reviews Sentiment
7.7
Number of Reviews
8
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 May 2026, in the Blade Servers category, the mindshare of Cisco UCS E-Series Servers is 3.8%, up from 2.4% compared to the previous year. The mindshare of Lenovo Flex System is 4.5%, up from 3.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Blade Servers Mindshare Distribution
ProductMindshare (%)
Lenovo Flex System4.5%
Cisco UCS E-Series Servers3.8%
Other91.7%
Blade Servers
 

Featured Reviews

AK
Solution Architect at COPYCAT LIMITED
Automation and integration capabilities streamline IT infrastructure management
The most valuable feature of Cisco UCS E-Series Servers is the Cisco interface. The server management and automation capabilities have been outstanding in automation, greatly benefiting our IT team. Pricing is acceptable, and these servers have had a significant impact on cost savings and operational efficiency. The integration with Cisco routers simplifies the IT infrastructure.
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

"Overall, the Cisco chassis is pretty good, pretty stable and easier to configure as compared to HP and others."
"The Cisco chassis is very easy to configure and any network engineer or expert can configure the solution and easily integrate it with the chassis."
"The server management and automation capabilities have been outstanding in automation, greatly benefiting our IT team."
"Stability-wise, it is a good product that remains stable."
"Cisco UCS E-Series Servers have been reliable, and it took almost five years for any hardware failure, which was only about a $100 repair, so nothing too major."
"The product is overall stable."
"They are really easy to maintain. I've added RAM to them. I've done a lot of other things with the virtualization."
"The product's most valuable features are stability, speed, and scalability."
"The product is very user-friendly and has many resources at the enterprise level."
"The functionality is reliable and requires minimal support."
"Flex System's best features are its performance and stability."
"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."
"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."
"We use the solution as a compute model to run the compute load on servers."
"I have found the solution to be quite stable."
 

Cons

"The processing capacity could be improved."
"The tool must be made compatible with multi-vendor ecosystems."
"One thing that could be improved is the cost - it is very high for this Blade chassis as compared to other vendors, especially in Asia."
"I think that's probably one of the biggest failure points with Cisco, from their documentation all the way to their products."
"I would like to see improvements in VMware integration with Cisco, especially in terms of documentation and integration tools. Support of NVIDIA integration would also make it better."
"The product should also be available in a standard edition or a standard license since currently there is a need to pay for an extra license, which is very expensive, especially when considering the budgeting part of our company."
"The biggest pain point for us is the matrix for the firmware upgrades. It is a pain. You look at that thing, you might as well be reading Greek. It would be a whole lot better if they could clean up their documentation on it."
"The platform's pricing needs improvement. There could be more collaborative tools included."
"It does not have the same module flexibility that was present in IBM Blade. On the Blade System, I was able to choose between the Cisco module, or BMC module. Since the switch to Lenovo, I have not had the same choice of modules, only the BMC modules."
"The product could improve its integration capabilities."
"The solution could improve by providing more integration with other platforms."
"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."
"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."
"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."
"Flex System's integration with the XClarity Management System could be improved."
"It does not have the same module flexibility that was present in IBM Blade. On the Blade System, I was able to choose between the Cisco module, or BMC module; since the switch to Lenovo, I have not had the same choice of modules, only the BMC modules."
 

Pricing and Cost Advice

"The pricing of the solution is reasonable. From a commercial point of view, the prices are okay."
"The solution is expensive."
"The product is expensive."
"There is a need to pay towards the licensing costs of the solution. The most expensive server from Cisco is Cisco UCS B-Series."
"It's expensive, they are quite pricey."
"The price is interesting. I am able to quote a client based on their needs and offer them either Lenovo or Dell."
"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."
"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 are just paying the operational cost, which is not much."
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Top Industries

By visitors reading reviews
No data available
Financial Services Firm
13%
Construction Company
13%
Manufacturing Company
11%
University
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business3
Midsize Enterprise5
By reviewers
Company SizeCount
Small Business3
Large Enterprise7
 

Questions from the Community

What is your experience regarding pricing and costs for Cisco UCS E-Series Servers?
The pricing of Cisco UCS E-Series Servers is okay, costing around 30,000 per year. Support is included in this cost.
What needs improvement with Cisco UCS E-Series Servers?
I would like to see improvements in VMware integration with Cisco, especially in terms of documentation and integration tools. Support of NVIDIA integration would also make it better.
What is your primary use case for Cisco UCS E-Series Servers?
I use Cisco UCS E-Series Servers ( /products/cisco-ucs-e-series-servers-reviews ) for managing our IT infrastructure and supporting AI-driven projects. The integration with Cisco routers simplifies...
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 E-Series Servers
Flex System Blade Servers, Flex System SN Series
 

Overview

 

Sample Customers

Navaho,  MiroNet AG, Columbia Sportswear
Information Not Available
Find out what your peers are saying about Cisco UCS E-Series Servers vs. Lenovo Flex System and other solutions. Updated: April 2026.
893,244 professionals have used our research since 2012.