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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

"The product's most valuable features are stability, speed, and scalability."
"They are really easy to maintain. I've added RAM to them. I've done a lot of other things with the virtualization."
"The most valuable features are that they are efficient and easy to setup."
"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."
"Overall, the Cisco chassis is pretty good, pretty stable and easier to configure as compared to HP and others."
"Stability-wise, it is a good product that remains stable."
"Cisco has better visibility and manageability for disaster recovery."
"The product is overall stable."
"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."
"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."
"The Lenovo Flex System is very stable."
"The most valuable feature of the Lenovo Flex System is the storage system."
"We use the solution as a compute model to run the compute load on servers."
"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."
"Flex System's best features are its performance and stability."
 

Cons

"The processing capacity could be improved."
"The tool must be made compatible with multi-vendor ecosystems."
"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 platform's pricing needs improvement. There could be more collaborative tools included."
"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."
"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. Asian customers mostly prefer a cost effective, cheaper solution."
"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."
"The product could improve its integration capabilities."
"The price of the Lenovo Flex System could improve."
"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."
"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."
"I had some difficulties with the initial setup."
"The solution's firmware and driver upgrades are a bit difficult."
"Flex System's integration with the XClarity Management System could be improved."
 

Pricing and Cost Advice

"The product is expensive."
"The solution is expensive."
"It's expensive, they are quite pricey."
"The pricing of the solution is reasonable. From a commercial point of view, the prices are okay."
"There is a need to pay towards the licensing costs of the solution. The most expensive server from Cisco is Cisco UCS B-Series."
"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 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."
"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
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.
893,311 professionals have used our research since 2012.