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Dell PowerEdge R-Series vs Lenovo Flex System comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jun 3, 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
2nd
Average Rating
9.0
Reviews Sentiment
7.0
Number of Reviews
309
Ranking in other categories
Converged Infrastructure (1st), Data Center Networking (4th), Rack Servers (1st)
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 Dell PowerEdge R-Series is 5.1%, up from 2.2% 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 (%)
Dell PowerEdge R-Series5.1%
Lenovo Flex System4.4%
Other90.5%
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

"The feature I appreciate the most about Dell PowerEdge Rack Servers is the reliability. I have tried other manufacturers and servers both personally and in my job, and it's clear that the Dell PowerEdge offers the best price, performance, and reliability; there's really no contest."
"Dell PowerEdge R-Series is overall a good, stable product that is not giving us any failures, and with 500 users doing CRUD operations, it is serving the purpose well."
"The rapid rail system is valuable. We have staff working at night to perform installations, and the nature of our business involves real-time transactions with changes made outside of regular hours."
"They are very stable. They are rock solid. I am happy with them."
"They provide good support for part replacement, and when they cannot because the part is unavailable, they are pretty good at informing us and letting us know, but generally, these servers just sit in the data center and have been working 24/7 for years without any problems."
"The most valuable feature of Dell PowerEdge Rack Servers is pretty much the same thing that I mentioned with PowerStore: the simplicity, the resiliency, and the fact that it just works."
"Using Dell PowerEdge servers has helped reduce my total cost of ownership because of the support, and in terms of time savings, it probably saves me at least four hours a year."
"Its approach to user security measures is valuable. We haven't experienced any major issues, and the solution has been working really well."
"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."
"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 most valuable feature of the Lenovo Flex System is the storage system."
"I have found the solution to be quite stable."
"The stability and speed are always good. The processor is good and it's still working with our loads."
"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."
 

Cons

"The GUI could be improved. I primarily work with the command line, which enables you to do many things faster."
"The rate controller interface is difficult to get to without installing additional software. It would be helpful if they had preinstalled software to make that easily accessible."
"After the expiration of support, it is sometimes challenging to find parts like hard drives, especially for obsolete models."
"My only complaint would be if you're calling the specific fed line, sometimes they don't transfer you, and they want to get information that you can't give them before they do, even if you call the dedicated fed line, which is not always consistent, depending on the time of day."
"The aftermarket price for RAM modules and CPU cores is expensive. If I want to switch out a CPU or processor inside of my Dell PowerEdge to gain more cores, which increases my performance for VMware, the aftermarket price is so expensive that we typically take that box, retire an older Dell PowerEdge, and then buy a brand new one."
"They could improve the time between new versions of the product."
"The T150 is a little bit bulky for what it is."
"For storage, I find that Dell PowerEdge R-Series is not useful."
"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 solution's firmware and driver upgrades are a bit difficult."
"The solution could improve by providing more integration with other platforms."
"The price of the Lenovo Flex System could improve."
"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."
"Flex System's integration with the XClarity Management System could be improved."
"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."
"I had some difficulties with the initial setup."
 

Pricing and Cost Advice

"We would prefer it if the pricing were for half the cost. We have been expanding our company, and my boss stated that we must save money."
"The server is a one-time purchase, but the support is on a subscription basis."
"The price of Dell EMC PowerEdge Rack Servers is reasonable compared to other solutions."
"It's a one-time licensing fee for the device and we pay a quota per year for the support."
"The pricing is very competitive."
"The pricing for this solution is reasonable. We pay a basic premium with a military premium on top of that."
"I wouldn't say the solution's pricing is the best, but it's very competitive."
"The cost structure associated with Dell PowerEdge Rack Servers aligns closely with the prevailing norms established within the information technology hardware sector."
"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."
"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 price is interesting. I am able to quote a client based on their needs and offer them either Lenovo or Dell."
"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."
"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."
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Top Industries

By visitors reading reviews
Manufacturing Company
12%
Financial Services Firm
8%
Construction Company
7%
Computer Software 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 Business112
Midsize Enterprise66
Large Enterprise129
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 needs improvement with Dell EMC PowerEdge Rack Servers?
Unplanned production downtime is a concern. According to our experience, when we run a high workload to a certain level, for example, more than 80% or up to 90%, the system does not perform well. T...
What is your primary use case for Dell EMC PowerEdge Rack Servers?
We run multiple workloads on Dell PowerEdge R-Series, including database and virtual machine workloads. Some of our multi-purpose VM workloads are running databases such as Mongo or Oracle. We serv...
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: August 2026.
909,563 professionals have used our research since 2012.