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IBM FlashSystem vs NEC D3 series comparison

 

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:
 

Categories and Ranking

IBM FlashSystem
Ranking in Modular SAN (Storage Area Network)
2nd
Average Rating
8.2
Reviews Sentiment
7.0
Number of Reviews
111
Ranking in other categories
NAS (5th), All-Flash Storage (13th)
NEC D3 series
Ranking in Modular SAN (Storage Area Network)
19th
Average Rating
9.0
Reviews Sentiment
8.0
Number of Reviews
1
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of July 2025, in the Modular SAN (Storage Area Network) category, the mindshare of IBM FlashSystem is 19.2%, up from 16.3% compared to the previous year. The mindshare of NEC D3 series is 0.4%, up from 0.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Modular SAN (Storage Area Network)
 

Featured Reviews

OmarIsmail1 - PeerSpot reviewer
Offers high performance and dependable support for fast storage needs
The most valuable feature of IBM FlashSystem ( /products/ibm-flashsystem-reviews ) is its robust back code. When integrated properly into the environment and configured according to the guidelines, it provides a very solid infrastructure that does the job on demand. Additionally, IBM FlashSystem offers competitive pricing and reliable performance. The hardware is dependable, ensuring that it functions effectively when the setup is done correctly.
Gungor Bingul - PeerSpot reviewer
Stable, performs well, and the technical support is good
We use this storage solution to host our ERP, CRM, file server, databases, and lots of other things The performance is better than with our previous version. We are not satisfied with the cost of licensing and would like to have a better price to performance ratio. We have had contract-related…

Quotes from Members

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

Pros

"The speed and the ease of installation are the most valuable features."
"I rate the technical support from IBM as a ten."
"At the FlashSystem level, customers are especially fond of multi-tier and distributed rate systems, particularly the dynamic rate six arrays."
"The installation is nice and easy."
"I would recommend it to other users."
"They have a virtualization feature and, even if you do not want to buy that feature, you can have it as a trial for two to three months. If you have another brand of storage from another company, you can use this tool to transfer all your data from the old system to the new Storwize system, which really shortens the migration time."
"The performance of the solution is noteworthy."
"High availability and enhanced security; Proven dependability; Data compression with hardware acceleration; Advanced copy services features are all in this product."
"The performance is better than with our previous version."
 

Cons

"The solution is not easy to implement. It takes a lot of time to study the product and it's a little complicated in general."
"The ease of installation should be improved. We had issues with the configuration model."
"They can include Amazon file system S3 protocol in the upcoming releases. It is a cloud file system. IBM FlashSystem doesn't have this feature in the box for high-end or mid-range. We have got requests for this from customers because we need to use S3 for EDI application storage. At the beginning of every year, IBM releases firmware. When I find any bugs in the firmware during the year, I am unable to find any information from IBM regarding the bug. I need to open a ticket, and the IBM engineering team makes a patch only for me. This patch is not public. By creating a customized patch for a client, they don't really solve the issue for everyone. If multiple users have the same bug, IBM should upload the patch on the official website so that we can download it. IBM FlashSystem has a monitoring tool in the box, but it is not advanced. I need a more advanced tool for more advanced equations and monitoring. All top three storage vendors, that is, EMC, IBM, and Pure Storage, don't have a powerful monitoring tool. To monitor our box to show the statistics for I/Os and latency, I need to pay for extra software. The built-in monitoring storage is not mature enough to handle all requests and generate all reports that I need. They can include the functionality to stretch a cluster natively without using any additional boxes. In addition, there are some features that EMC has integrated with the box. These features are not available in IBM FlashSystem."
"There is room for improvement in the troubleshooting part, specifically related to IBM Spectrum for Insight."
"The initial setup is complex."
"The Data Reduction Pools (DRP) support could be better."
"The customer's expectations are what they get on the cloud, they're expecting even in the on-premises deployments, going forward."
"It is slightly more expensive, however, it all depends on your supplier."
"We are not satisfied with the cost of licensing and would like to have a better price to performance ratio."
 

Pricing and Cost Advice

"They've been much more aggressive in the last five, six years than they were before that."
"Regarding licensing make sure you add at least three years software maintenance from IBM at the beginning, because you will not be able to download firmware updates or any fixes/patches without this."
"Among IBM, Dell EMC, and Pure Storage, IBM is the cheapest. The price is also based on our location, the size of our entity, and our regular annual purchases from them. We are a very big IBM customer, so we normally get very high discounts. We are not a big customer of Pure Storage. We don't buy that much from Pure Storage per year. Everything is included in the price. There is no extra license for different functions."
"It pays to go back and get the best price you can from your supplier. The first offer is not always at the best discount."
"Our customers would like IMB FlashSystem to be less expensive."
"The solution has good pricing, but it is not cheaper."
"The pricing is competitive in our country."
"I find the pricing of the solution to be very reasonable."
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Top Industries

By visitors reading reviews
Computer Software Company
13%
Financial Services Firm
11%
Manufacturing Company
9%
Comms Service Provider
7%
No data available
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

Questions from the Community

What is your experience regarding pricing and costs for IBM FlashSystem?
Many factors affect purchasing directly from IBM, often involving a multi-step process. Customers, especially in banking, often use the latest devices as they are upgrading, indicating they do not ...
What needs improvement with IBM FlashSystem?
The deduplication technology in IBM FlashSystem needs significant improvement. Other vendors like NetApp ( /products/netapp-41749-reviews ) offer better deduplication technology, which is noticeabl...
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Also Known As

IBM Storwize
D3 series
 

Overview

 

Sample Customers

Celero, Friedhelm Loh Group, Clarks, Mingkang Natregro Health Food Group, Sofia, Etisalat Fights Fraud, UF Health Shands Hospital, Generali, Elecon Engineering Company Limited, Ventiv , Technology, CPFL Energia, Royal Caribbean Cruises Ltd., SciQuest, Coca-Cola Bottling Co. Consolidated, Paddy Power, Kelsey-Seybold Clinic, Interconnect Services, Severstal IP-Only AB, PVU Group GmbH
Tsukuba Science City, Hokkaido Telecommunication Network Co. Inc, PHP Institute
Find out what your peers are saying about NetApp, IBM, Hewlett Packard Enterprise and others in Modular SAN (Storage Area Network). Updated: July 2025.
864,053 professionals have used our research since 2012.