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Lenovo ThinkSystem DM Series vs NetApp AFF vs NetApp EF-Series All Flash Arrays comparison

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Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Mindshare comparison

As of April 2026, in the All-Flash Storage category, the mindshare of Everpure FlashArray X NVMe is 1.6%, up from 0.8% compared to the previous year. The mindshare of Lenovo ThinkSystem DM Series is 1.9%, down from 2.3% compared to the previous year. The mindshare of NetApp AFF is 8.7%, down from 9.4% compared to the previous year. The mindshare of NetApp EF-Series All Flash Arrays is 1.0%, up from 0.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
All-Flash Storage Mindshare Distribution
ProductMindshare (%)
NetApp AFF8.7%
Pure FlashArray X NVMe1.6%
Lenovo ThinkSystem DM Series1.9%
NetApp EF-Series All Flash Arrays1.0%
Other86.8%
All-Flash Storage
 

Featured Reviews

Jaehoon Oh - PeerSpot reviewer
Chief Technology Officer at Lambda256
Supports efficient storage management through volume snapshots and offers reliable non-disruptive upgrades
I have no specific improvements to suggest for Pure FlashArray X NVMe at this time. The performance statistics could be enhanced. I can see the performance statistics in the Pure Storage console, but it does not show the performance by 4K byte unit. It displays IOPS and bandwidth, but IOPS is about real use, and I want to know how many IOPS are currently running in 4K byte units. I cannot see that IOPS because most storage systems report their performance by 4K byte unit. I want to see Pure Storage performance by 4K byte unit to compare with other storage or other internal NVMe SSD.
CA
Service manager at Crescent Technologies
Complicated deployment and poor support persist, affecting overall satisfaction
The deployment process of Lenovo ThinkSystem DM Series is very complicated compared to previous GUI systems. Many customers have lost data while configuring it, indicating a need for improvement. The after-sales service is also very poor. Furthermore, it does not offer basic features like deduplication, and the service is generally considered to be very bad.
KennethEtsula - PeerSpot reviewer
Presales Manager at Spartec
Offers seamless installation and efficient data handling with robust support
NetApp AFF provides an all-flash storage solution for unified SAN solutions, supporting both SAN and NAS functionalities. Data reduction capabilities such as deduplication, compression, and compaction are standard features included with the license in NetApp AFF. With the storage efficiency from a NetApp AFF installation, users can manage substantial data running on all-flash. The features such as compaction and compression provide storage efficiency guarantees in an all-flash environment.
Tayo Olubanke - PeerSpot reviewer
Managing Director at GCET
Offers flexibility and top-notch technology
You can go to bed peacefully if you have a NetApp. If you have NetApp within your data center, you get to know about power failure if you are using it. Your NetApp will still come alive. Even if it does not come alive, I can say that it is not like other tools when it comes to dealing with power failure. The tool is affordable, and the technology is top-notch. It is the only technology that has software for what we call inline compression and deduplication. All the products under NetApp are aiming to use AI. I know that you can achieve whatever you want to do with NetApp EF-Series All Flash Arrays. I rate the tool a nine out of ten.
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Top Industries

By visitors reading reviews
Computer Software Company
11%
Manufacturing Company
11%
Financial Services Firm
10%
Government
6%
Computer Software Company
20%
Comms Service Provider
9%
Retailer
6%
Construction Company
6%
Manufacturing Company
12%
Computer Software Company
11%
Financial Services Firm
7%
Construction Company
6%
Construction Company
14%
Computer Software Company
9%
Performing Arts
9%
Marketing Services Firm
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business15
Midsize Enterprise11
Large Enterprise12
By reviewers
Company SizeCount
Small Business13
Midsize Enterprise2
Large Enterprise2
By reviewers
Company SizeCount
Small Business45
Midsize Enterprise47
Large Enterprise242
By reviewers
Company SizeCount
Small Business12
Midsize Enterprise10
Large Enterprise18
 

Questions from the Community

What do you like most about Pure FlashArray X NVMe?
Pure FlashArray X NVMe helps to improve our processing speed. It is user-friendly and easy to use.
What is your experience regarding pricing and costs for Pure FlashArray X NVMe?
The price of Pure FlashArray X NVMe is very expensive, though I do not know the actual price because I am using the E...
What needs improvement with Pure FlashArray X NVMe?
I have no specific improvements to suggest for Pure FlashArray X NVMe at this time. The performance statistics could ...
What is your experience regarding pricing and costs for Lenovo ThinkSystem DM Series?
There are extra expenses beyond the standard licensing fee for features such as replication and deduplication, which ...
What needs improvement with Lenovo ThinkSystem DM Series?
The deployment process of Lenovo ThinkSystem DM Series is very complicated compared to previous GUI systems. Many cus...
What is your primary use case for Lenovo ThinkSystem DM Series?
My primary use case for Lenovo ThinkSystem DM Series ( /products/lenovo-thinksystem-dm-series-reviews ) is for storag...
What is the Biggest Difference Between Dell EMC Unity and NetApp AFF?
Well, Is one thing NetApp Storage has vs other brand is the mix of protocol CIFS with NFS booth working together in t...
What is the Biggest Difference Between Dell EMC Unity and NetApp AFF?
This question is very dependent on your requirements. Both are among the best in the field. Of course, the intended c...
What is the Biggest Difference Between Dell EMC Unity and NetApp AFF?
The answer depends on your needs and budget. If you want high performance (who doesn't) or let's say the latency matt...
What is your experience regarding pricing and costs for NetApp EF-Series All Flash Arrays?
One has to opt for a perpetual-based licensing model for one year or three years. After three years, you need to rene...
What needs improvement with NetApp EF-Series All Flash Arrays?
The support of the product is an area with certain shortcomings where improvements are required. I want NetApp's supp...
What is your primary use case for NetApp EF-Series All Flash Arrays?
There are so many things to talk about around the use cases associated with the tool. There are so many reasons why I...
 

Comparisons

 

Also Known As

Pure FlashArray//X NVMe, Pure FlashArray//X, FlashArray//X, Pure FlashArray X NVMe
ThinkSystem DM Series
NetApp All Flash FAS, NetApp AFF, NetApp Flash FAS
NetApp EF540, NetApp EF-Series
 

Overview

 

Sample Customers

Fremont Bank, Judson ISD, The Nielsen Company
Information Not Available
DreamWorks Animation, FICO, Yahoo! Japan
RP Data, Western Oregon University, Toei Animation
Find out what your peers are saying about Dell Technologies, Hewlett Packard Enterprise, NetApp and others in All-Flash Storage. Updated: March 2026.
885,728 professionals have used our research since 2012.