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HPE NonStop 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

HPE NonStop
Ranking in Blade Servers
12th
Average Rating
8.8
Reviews Sentiment
6.9
Number of Reviews
12
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 June 2026, in the Blade Servers category, the mindshare of HPE NonStop is 4.9%, up from 4.1% compared to the previous year. The mindshare of Lenovo Flex System is 4.5%, up from 3.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Blade Servers Mindshare Distribution
ProductMindshare (%)
Lenovo Flex System4.5%
HPE NonStop4.9%
Other90.6%
Blade Servers
 

Featured Reviews

Roni Wijaya - PeerSpot reviewer
Vice President of It Operations at a computer software company with 51-200 employees
With a perfect record for uptime, the solution ensures a return on investment
Since it is a legacy tool, there is a need to change it for flexibility. I think now it has improved because the security is very good. It is very secure for the performance of the machine critical application service, and it is very good. I don't know how to speak more on improvement needed because it's a good enough tool. However, depending on the application, it's limited. Not a lot of applications run on HPE NonStop. It is not flexible because I know that because of the compatibility of Java with HPE NonStop. When we are using Java, the performance is not good.
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

"If you are contemplating a fault-tolerant, high uptime transaction processing machine with above normal transactions volumes - to act as a transaction server with infrequent changes to code - and you simply must have bulletproof performance - this might be the ticket."
"It is a nearly perfect product, although it also has some restrictions and short comings."
"The HPE NonStop solution is rated with the highest level of availability in the industry."
"It helps us to keep the business running 24/7."
"Feature-wise, the most valuable one is the fact that it has 100 hundred percent uptime every year. Secondly, it is stable."
"They've been very reliable since we started using them in 1978, but we're going to replace them in a few years."
"Implement it. You will never regret it."
"This is the standard for reliability and fault-resilience."
"The functionality is reliable and requires minimal support."
"It's stable, it works well, and we have had no problem with it for a long time."
"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."
"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."
"Flex System's best features are its performance and stability."
 

Cons

"The NonStop Support Center is very good, with an occasional bump in the road."
"It is not flexible...Not a lot of applications run on HPE NonStop."
"The initial setup is complex. You need the help of a consultant for it to go smoothly."
"The hardware fails often, and I feel that HP really needs to pay more attention to this issue."
"There were some scalability issues. When we decided to migrate an application or port application, the limitations of these servers did not help us."
"NonStop (formerly known as Tandem) in the Guardian OS could use another, friendlier macro language."
"I would never advise someone to buy or to implement the new NonStop because it's hard to find skilled people."
"Currently the NonStop platform doesn’t support virtualization of servers or CPU’s. Only storage."
"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 product could improve its integration capabilities."
"The user interface needs improvement because they have an application from which we have to manage the whole system and all of the infrastructure."
"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."
"The price of the Lenovo Flex System could improve."
"The solution's firmware and driver upgrades are a bit difficult."
"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."
 

Pricing and Cost Advice

"On a scale of one to ten, where one is very cheap, and ten is very expensive, I rate the pricing an eight."
"HPE NonStop is definitely on the higher end."
"The price of the solution is too high. If they lowered the price substantially it would open up more opportunities. It's considered a replacement for the old 9000 boxes of HP. If it had a lower price, we would be able to compete in the financial, and other sectors and other solutions such as Terraform. Having a high price makes other solutions more attractive."
"There is a one-off payment to buy the equipment and the support is purchased annually."
"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."
"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
Computer Software Company
15%
Financial Services Firm
15%
Construction Company
13%
Manufacturing Company
5%
Construction Company
16%
Financial Services Firm
11%
Manufacturing Company
11%
University
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business4
Midsize Enterprise3
Large Enterprise7
By reviewers
Company SizeCount
Small Business3
Large Enterprise7
 

Questions from the Community

Ask a question
Earn 20 points
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

HP NonStop, HPE Integrity NonStop
Flex System Blade Servers, Flex System SN Series
 

Overview

 

Sample Customers

Bankart, Capital Securities Corporation
Information Not Available
Find out what your peers are saying about HPE NonStop vs. Lenovo Flex System and other solutions. Updated: June 2026.
900,747 professionals have used our research since 2012.