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Dell PowerEdge R-Series vs Lenovo Flex System comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Mar 1, 2026

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

Dell PowerEdge R-Series
Ranking in Blade Servers
4th
Average Rating
9.0
Reviews Sentiment
7.2
Number of Reviews
271
Ranking in other categories
Converged Infrastructure (1st), Data Center Networking (2nd), Rack Servers (1st)
Lenovo Flex System
Ranking in Blade Servers
8th
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 March 2026, in the Blade Servers category, the mindshare of Dell PowerEdge R-Series is 4.7%, up from 1.0% compared to the previous year. The mindshare of Lenovo Flex System is 4.6%, up from 2.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Blade Servers Mindshare Distribution
ProductMindshare (%)
Dell PowerEdge R-Series4.7%
Lenovo Flex System4.6%
Other90.7%
Blade Servers
 

Featured Reviews

Tom van Mil - PeerSpot reviewer
Systems Administrator at Lico Innovations B.v.
Supports flexible hosting needs through seamless upgradability and strong monitoring capabilities
The most valuable features of Dell PowerEdge R-Series for me are the feature richness and the upgradability. I really love the way that it is so dynamically applicable for every situation, and they manage to have an all-in-one solution for every single situation. Dell PowerEdge has supported the growth and operational success of my company through its great compute power and price-to-performance ratio. Every time Dell is at the top of its game for us, and there is just no other brand for us that is able to reach that kind of price-to-performance ratio. Dell PowerEdge R-Series has features that specifically cater to the needs of my small company, such as iDRAC. The iDRAC system is a complete feature set for managing servers and hardware technically and monitoring-wise. It really fits in our system and our ecosystem, and monitoring-wise, it is excellent. They have all these sensors available via different protocols and end points, which I love, and the ability to manage and control everything via the iDRAC interface is just a welcome bonus. In our use case, Dell PowerEdge R-Series is very flexible. It is another computer which helps a lot because of the durability over time. They keep running, making scalability for getting more of those resources in our environment so easy.
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

"One of the great things about Dell PowerEdge R-Series is the racking system, specifically the actual rapid rails for easy installation."
"Its approach to user security measures is valuable. We haven't experienced any major issues, and the solution has been working really well."
"Dell R series are very good engineered servers."
"The lifecycle has been expanded because it is useful to use the older hardware that we have decommissioned for new use cases; they do not go immediately into e-waste."
"The iDRAC helps us monitor and manage our systems."
"Dell PowerEdge R-Series is more than capable of supporting those systems, and that has been really important."
"PowerEdge is flexible and adaptable. You can you can build whatever you want from it."
"Dell PowerEdge Rack Servers have been stable and reliable over the last decade."
"The initial setup is straightforward."
"The Lenovo Flex System is very stable."
"It's stable, it works well, and we have had no problem with it for a long time."
"The product is very user-friendly and has many resources at the enterprise level."
"The product is very user-friendly and has many resources at the enterprise level."
"We use the solution as a compute model to run the compute load on servers."
"Flex System's best features are its performance and stability."
"It comes at a good price. We didn't face any problems with this product."
 

Cons

"On the client side, the feedback about Dell PowerEdge is that it is always too expensive."
"It would be easier if the remote connection to the server could be done through the USB port. From the server, we should be able to connect to a laptop or a management workstation through a USB port."
"There needs to be more flexibility for business options."
"It's not the perfect solution but it is reasonable."
"All of the servers are in cluster mode and when PowerEdge Server is down, others are affected."
"I would like more resilience because, for all companies, cybersecurity is important."
"When trying to piece out a server for our builds, there are so many different SKUs—probably 30 to 40 SKUs—that it can be difficult to read. If that could be condensed a little bit, that would help."
"Dell hardware is not as stable as HP. I have not seen any issues with HP in five years, but with Dell, I am getting multiple issues. It's not stable. They need to verify why it has multiple issues and why Dell hardware is not as stable as HP hardware."
"The solution could improve by providing more integration with other platforms."
"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."
"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 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's firmware and driver upgrades are a bit difficult."
"The most valuable feature of the Lenovo Flex System is the storage system."
"Flex System's integration with the XClarity Management System could be improved."
 

Pricing and Cost Advice

"It's pretty much on par."
"The overall pricing and licensing are fair according to the market."
"The solution is expensive."
"The high cost of Dell PowerEdge Rack Server licenses is attributed to the pre-installed Windows Server operating system from Microsoft."
"The more complex the server requirements, the more expensive it gets."
"It's a bit of a shock when you have to find the money, but the pricing is very competitive, so I'm happy with that."
"They are affordable. Even during our recent procurement, the cost of Dell servers was lower than that of HPE."
"We weren't paying very much, but it was at the end of the lifecycle. We are now using the VxRail hyper-converged infrastructure, and the pricing was very similar for the same amount of power but with easier automation."
"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 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."
"We are just paying the operational cost, which is not much."
"There is a one-off payment to buy the equipment and the support is purchased annually."
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Top Industries

By visitors reading reviews
Manufacturing Company
12%
Computer Software Company
11%
University
7%
Financial Services Firm
6%
Manufacturing Company
13%
Financial Services Firm
11%
University
7%
Marketing Services Firm
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business98
Midsize Enterprise59
Large Enterprise113
By reviewers
Company SizeCount
Small Business3
Large Enterprise7
 

Questions from the Community

When shopping for a rack server, would you go with Dell EMC Poweredge or Lenovo Thinksystem?
Our organization ran comparison tests to determine whether the Dell EMC Poweredge or Lenovo Thinksystem rack servers were the better fit for us. We ultimately decided to go with Dell EMC Poweredge....
What do you like most about Dell EMC PowerEdge Rack Servers?
It has helped us reduce unplanned downtime by 20% to 30%.
What needs improvement with Dell EMC PowerEdge Rack Servers?
I do not see any area for improvement in Dell PowerEdge R-Series, particularly nothing very significant. I do not know what new features Dell could add to Dell PowerEdge R-Series; I have no idea, a...
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

Dell PowerEdge Rack Servers
Flex System Blade Servers, Flex System SN Series
 

Overview

 

Sample Customers

NxtGen Datacenter, Medien-Service Untermain (MSU), Exasol, IndigoVision, Dayco
Information Not Available
Find out what your peers are saying about Dell PowerEdge R-Series vs. Lenovo Flex System and other solutions. Updated: March 2026.
884,933 professionals have used our research since 2012.