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Dell PowerEdge R-Series vs Lenovo Flex System comparison

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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
6.9
Number of Reviews
353
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 November 2026, in the Blade Servers category, the mindshare of Dell PowerEdge R-Series is 4.8%, up from 2.9% compared to the previous year. The mindshare of Lenovo Flex System is 4.2%, up from 3.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Blade Servers Mindshare Distribution
ProductMindshare (%)
Dell PowerEdge R-Series4.8%
Lenovo Flex System4.2%
Other91.0%
Blade Servers
 

Featured Reviews

Jose Oliveira - PeerSpot reviewer
Diretor at a consultancy with 11-50 employees
Local servers have delivered long-term ERP and virtualization performance while reducing cloud costs
In terms of improving Dell PowerEdge R-Series, to be honest, the product has so many options that I find it very difficult to improve it in terms of product itself. Of course, there will always be some technological evolution and new components, but what the product offers in each generation, and I've already followed five or six generations of Dell PowerEdge from generation 11 up to generation 17, it has always kept pace with technological innovation. In terms of storage, it's always extremely in line with what the market is offering. In terms of memory, each new generation always follows the newest RAM trends. Processors also have both AMD and Intel options. I believe the product already has very high maturity. The availability of redundant power supplies and the availability of off-band management via iDRAC are excellent. The product is already extremely solid and reliable. The most I could perhaps say is that sometimes in some operations, I find iDRAC a bit slow, but that's a characteristic of off-band management because performance comes from a separate card that has its own processor and its own memory, so sometimes it's not as fast as I'd expect from the machine itself. Overall, there really isn't much to say because the product is extremely robust and efficient.
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 biggest benefit my company gets from having Dell PowerEdge R-Series is that they work as we expect and deliver the performance that we expect."
"The most valuable feature of Dell PowerEdge Rack Servers is the ease of use, as it allows me to spin up different OSes on it without having to go through a bunch of hoops."
"I have realized a return on my investment with Dell PowerEdge Rack Servers in terms of cost savings."
"Using Dell PowerEdge R-Series helps my company because it saves us having to drive to our data center; if something is down, we can just remote in from the management port, which saves time and lets us get applications up faster."
"Dell PowerEdge R-Series is a scalable solution that is always up to date with the latest processor, memories, and all that, especially when a customer requires the latest technology for maximum performance."
"Using Dell PowerEdge R-Series saves me a lot of time; I'm saving probably at least four hours for each upgrade that I have to do."
"The solution is easy to use and very stable, and we are happy with it."
"The benefits they have seen from using Dell PowerEdge R-Series are that it is more resilient and has strong security, and the versatility and the capabilities and features of the device are awesome."
"It's stable, it works well, and we have had no problem with it for a long time."
"The functionality is reliable and requires minimal support."
"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."
"One of the most valuable features of this solution is its ease of use."
"The initial setup is straightforward."
"The stability and speed are always good. The processor is good and it's still working with our loads."
"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."
 

Cons

"I understand that the licensing can be confusing, and I would prefer to see that aspect become simpler."
"I do not have any qualms or problems with Dell PowerEdge Rack Servers. However, when it comes to the software, some of their competitors are already feeding a lot of performance and availability data to an online platform. We have not seen that with PowerEdge."
"We have storage and would like to manage more backups without adding extra storage devices. Maybe it's already there. I need to look at it more."
"The scalability has room for improvement."
"The performance could be a bit better."
"The price is the only thing that can be improved."
"The servers get slower at the end of their life cycle. The technology needs to evolve."
"We use PowerEdge servers in conjunction with VMware, a VCF Rack, and VxRail. That has worked out well. We are using it for firmware upgrades and other similar tasks. It's a one-stop shop, but it could be better when the servers aren't on a VCF stack. Profile handling and upgrading standalone servers could improve, but they have gotten better over the years."
"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 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."
"Flex System's integration with the XClarity Management System could be improved."
"The product could improve its integration capabilities."
"The solution could improve by providing more integration with other platforms."
"The solution's firmware and driver upgrades are a bit difficult."
"I had some difficulties with the initial setup."
"The installation was not easy."
 

Pricing and Cost Advice

"The server is a one-time purchase, but the support is on a subscription basis."
"We have a contract with the OEM of the equipment for licenses, so we possess all OEM licenses for the Dell software. We have licenses for Linux and VMware software, with a special price and an annual contract for updates of Linux and VMware. Additionally, we have an Oracle database on the Dell PowerEdge Rack Servers."
"The pricing is fair enough."
"The cost structure associated with Dell PowerEdge Rack Servers presents itself as a potential point of contention for budget-conscious consumers, as it could be more strategically positioned to compete within the broader marketplace."
"I don't know about the product's licensing part. Price-wise, it is an okay product. I believe that the cheaper the better, but I think that the product's price is okay."
"The product is cheaper than HP servers, but the price could always be better."
"It is expensive. The price needs to be more competitive. Additional licenses are required to enable some of the features for scalability."
"It's pretty much on par."
"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."
"There is a one-off payment to buy the equipment and the support is purchased annually."
"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."
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Top Industries

By visitors reading reviews
Manufacturing Company
13%
Financial Services Firm
8%
Outsourcing Company
8%
Construction Company
6%
Construction Company
14%
Manufacturing Company
11%
Outsourcing Company
9%
Financial Services Firm
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business125
Midsize Enterprise70
Large Enterprise156
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?
Dell PowerEdge R-Series could improve by addressing the issue of temperatures and problems with RAM memory, as those are generally where we have had issues. The modules, specifically the DIMMs, ten...
What is your primary use case for Dell EMC PowerEdge Rack Servers?
My main use case for Dell PowerEdge R-Series is for private cloud infrastructure. A specific example of how I use Dell PowerEdge R-Series in my environment is for private cloud provisioning for 5G....
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: November 2026.
920,939 professionals have used our research since 2012.