IBM FlashSystem 9100 NVMe vs Nutanix Unified Storage (NUS) comparison

IBM FlashSystem 9100 NVMe vs. Nutanix Unified Storage (NUS)

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Review summaries and opinions

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

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Pure FlashArray X NVMe

Mindshare comparison

As of August 2025, in the All-Flash Storage category, the mindshare of Pure FlashArray X NVMe is 0.9%, up from 0.8% compared to the previous year. The mindshare of IBM FlashSystem 9100 NVMe is 0.5%, down from 0.5% compared to the previous year. The mindshare of Nutanix Unified Storage (NUS) is 0.7%, up from 0.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.

All-Flash Storage

Featured Reviews

Jaehoon Oh

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.

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MohammedIsmail

Datacenter Manager at Tracker Connect

Enhanced storage performance and an easy setup with compression challenges

We use IBM FlashSystem 9100 NVMe as a storage device in the IT industry The features I find most valuable include its use for storage and performance. The solution's compression needs to be improved, as it's not the best. Furthermore, support from the partner could also be improved as it's been…

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Amarnath Charugundla

System Engineer at Tata Consultancy

Unified management and cost-effectiveness lead to positive experiences and future savings

Improvement is necessary wherein the memory or storage should not breach 90%, because if breached, it becomes unmanageable. We have to set alerts or CPU triggering for 95% for the first warning. Other activities on nodes or file systems should be properly maintained. We must monitor the dashboard for P1, P2 alerts in the Nutanix Unified Storage (NUS) file share system including SMB, NFS, objects, and blocks. Attention should be maintained for any alerts such as CPU, memory, and RAM alerts, as exceeding these creates issues within teams. If triggered to 95% and forgotten, it crosses the SLA breach, causing disturbances to application, web, and platform teams. Continuous monitoring on the Nutanix dashboard is essential. Even a highly experienced person in Nutanix Unified Storage (NUS) cannot provide a 10 rating out of 10 because it is a vast system. I would rate it eight from my perspective.

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Quotes from Members

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

Pros

"The most valuable feature of this solution is its ease of use."

"The solution is very straightforward to set up."

"The latency is good."

"The most valuable features of this solution are its ease of use and performance."

"Pure FlashArray X NVMe will quickly overcome all the hurdles you face, including network and latency issues."

"The most valuable feature of this solution is reliability."

"I use the tool for Oracle databases, Oracle virtual machines, and Oracle Linux databases. I'm on the storage side, not a database administrator."

"Pure FlashArray X NVMe has low latency and high Ops. It is an evergreen model."

More Pure FlashArray X NVMe pros

"The FlashCore modules support more value to the architecture due to their unique characteristics."

"The most valuable features of IBM FlashSystem 9100 NVMe are its steady performance and usefulness in high-traffic environments."

"IBM FlashSystem 9100 NVMe is one of the leading storage systems in the world...I rate the solution's stability a ten out of ten."

"It's easy to use, has good stability, and many features."

"It is a very stable product. Stability-wise, I rate the solution a ten out of ten because we did not face any issues in the last three years."

"A key feature is that compared to storage systems that we've been familiar with over decades, IBM simply does not fail. The reason is that IBM is the only manufacturer that engineers its own flash module, and there is a key architectural difference from everything else that we have seen in the market. The difference is that the flash module has the computational capability, which allows reliability and capacity enhancements to be uploaded from the main controllers and run in each module. So, each of the flash drives becomes its own little storage system, and that is extremely effective architecture. In this field, with this type of system, IBM has made a statement. They've never had one of these modules cause an outage. So, the failure rates on these things are just in a whole different universe from what we were accustomed to."

"The most valuable feature of IBM FlashSystem 9100 NVMe is the snapshot. We use it daily for all of the storage units."

"It is a very stable solution."

More IBM FlashSystem 9100 NVMe pros

"I rate the overall solution ten out of ten."

"The performance has been very good."

"I like Nutanix Prism Central. The primary benefit is that we can manage everything from the same page."

"The solution's most valuable feature is the Prism Central centralized management console."

"The customer service executives of all Nutanix products are active and responsive."

"For customer service and technical support, I would rate them a nine out of ten."

"DR and the replication power are valuable."

"The product is good, easy to upgrade, easy to use, and user-friendly."

More Nutanix Unified Storage (NUS) pros

Cons

"There is room for improvement in the pricing of the product."

"We have run into a couple of instances recently where we are running out of space. So we have had to buy some more packs for it and they have deployed fine and it has increased smoothly."

"Managing data isn't difficult for me. The performance is usually perfect, but we sometimes have capacity problems."

"In the next release, I would like to see real-time analytics for further insight into consumption models."

"The tool's portfolio is minimal. It is expensive."

"I would like to see some AI features that would allow arrays to intelligently identify threats or unusual behavior in the data pattern and give an alert."

"It feels more suitable for small and medium-sized businesses rather than enterprises."

"If the customer only needs 500 terabytes and doesn't care how much data they'll put in the server, IBM is cheaper than Pure."

More Pure FlashArray X NVMe cons

"The solution's compression feature could be better."

"I'd like to be able to connect to tape drives behind the storage device to back up the tape if need be. We have all of our storage running in all-flash, and we make a copy on tape. Currently, when we want to hook up tape drives, we have to add some extra equipment, which is a little bit complex. We want IBM to add a feature where we could install a tape into the storage so that we can connect it through a single pane of glass. We'd like to have a feature in the IBM flash storage system so that we can connect backup tape drives through the IBM storage system and we can manage the backup tape from the storage system."

"In the FlashSystem 5200, there were only four ports of 32 fiber channels for the architecture. This has been resolved in the new generation."

"Other vendors have included a block and file system. IBM doesn't include a file system. And yet, it's very necessary for all organizations' networks to have file systems. We have other systems for the file system, however, ideally, we would like to have one system with these features."

"In the future, the limitation is upgrading the same storage by adding a shelf to the desk. There is a limitation in the backend connection between the storage and extended shelf."

"There is a tool provided by IBM for repairing batteries which can only be utilized by those who have an IBM technical advisor under service contract. However, for individuals who do not have such a contract, the tool can be difficult to use and requires a zip file copy. I believe that it would be greatly beneficial if the tool were made more user-friendly and accessible for all individuals who need to repair batteries."

"IBM FlashSystem 9100 NVMe is an expensive solution, and its pricing could be improved."

"IBM FlashSystem 9100 NVMe is currently at the end of its lifespan and will soon become obsolete in the markets."

More IBM FlashSystem 9100 NVMe cons

"The graphical user interface could provide more detail. It would be nice if we could click on the service and get some expanded definitions of them. When hiring new people, it's difficult to teach them how everything works, but if they can access everything, they can teach themselves."

"There is potential to push this product more since it's not common in the market. They could increase their marketing efforts."

"The pricing can be quite high."

"Nutanix needs to improve their cybersecurity options at the storage level."

"According to the keynotes announced by Nutanix the previous day or this morning, the data storage for Kubernetes requires improvement as it has a few shortcomings in the area of operations."

"Nutanix could improve the ability to track user actions, such as identifying who deleted a folder."

"The licensing terms are restrictive, as they go by terabyte cost."

"It could be more user-friendly."

More Nutanix Unified Storage (NUS) cons

Pricing and Cost Advice

"The tool is an investment that we've budgeted for. While the prices may be higher than those of other vendors, we see it as a market leader with benefits. We don't regret purchasing it."

"As far as the licensing costs, everything is included in the license."

"Pure FlashArray X NVMe’s pricing is cheaper than other products."

"The support cost per array is about $20,000 a year for 24/7 support."

"They can tout the functionality and cutting edge technology that they have, but that's where the price tag comes in. The cost is high, but I think as they grow their business and get more customers that it will probably go down a little bit."

"The licensing is on a yearly basis."

"The tool's pricing is cheap; I rate it a six to seven out of ten. Most of our sales are not subscription-based. We sell the hardware, and customers keep using it. They only renew the service part annually. The support can be a bit pricey, but the solution is more cost-effective than anything else out there."

"Pretty much everything that you need is licensed when you buy the product. Licensing to me is different than the maintenance cost, but they can bleed into one another. We buy the product, and we expect three years of support bundled into what we negotiate on our storage arrays. I would start to see maintenance costs going into the fourth year, but we're not there yet."

More Pure FlashArray X NVMe pricing and cost advice

"There are pricing options from the mid-rand to the high-range, of which the suitability depends upon the requirements."

"The price of the FlashSystem 9100 NVMe is reasonable."

"The solution is priced well."

"Price-wise, the solution offers excellent pricing to its users. In short, the prices offered by the solution are competitive compared to similar solutions."

"The solution's price is competitive."

"Compared to other solutions, the cost of IBM FlashSystem 9100 NVMe is reasonable, with a one-time payment of around $70,000. However, additional support is available for $25,000 for three years. The overall maintenance cost is steep."

"The price of IBM FlashSystem 9100 NVMe is less than Dell. For upgrades, the Dell solutions are more expensive."

"Compared to its competitors, IBM's offering is the most cost-effective."

More IBM FlashSystem 9100 NVMe pricing and cost advice

"For clients running Nutanix, the licensing cost for Files is a small add-on cost."

"The solution is highly-priced."

"Nutanix's pricing is definitely much better when compared to other storage providers. That was one of the main reasons we switched to this platform."

"From what I hear from the management, Nutanix Unified Storage has comparatively decent pricing."

"Licensing-wise, I have no complaints. Their license is pretty simple and easy. It gives us everything we need, so I have no complaints about licensing."

"Nutanix Unified Storage is competitively priced. There aren't any competitors that can do much better for the same price."

"It is quite expensive otherwise as it comes with three-tier peer underlying hardware."

"In the manufacturing industry, we operate under very lean principles where costs are heavily scrutinized. There was some initial hesitation, but the performance we've experienced since switching to the Nutanix platform, along with the peace of mind from having confidence in our platform to not give us issues that keep us up at night, has smoothed over much of that scrutiny."

More Nutanix Unified Storage (NUS) pricing and cost advice

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Top Industries

By visitors reading reviews

Computer Software Company

14%

Manufacturing Company

10%

Financial Services Firm

10%

Government

Computer Software Company

11%

Government

10%

Financial Services Firm

10%

Manufacturing Company

Computer Software Company

30%

Manufacturing Company

Educational Organization

Financial Services Firm

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

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 do you like most about IBM FlashSystem 9100 NVMe?

The storage serves the virtual environment. Most of our applications run in the virtual environment, and it serves ne...

What is your experience regarding pricing and costs for IBM FlashSystem 9100 NVMe?

The tool is expensive, though I do not know the specific licensing costs.

What needs improvement with IBM FlashSystem 9100 NVMe?

The solution's compression needs to be improved, as it's not the best. Furthermore, support from the partner could al...

What do you like most about Nutanix Unified Storage?

Nutanix has excellent product documentation available on their portals, written in simple, easy-to-understand language.

What is your experience regarding pricing and costs for Nutanix Unified Storage?

I have no idea about the pricing of Nutanix Unified Storage (NUS) as I'm not the decision authority for pricing. Gene...

What needs improvement with Nutanix Unified Storage?

While there are good aspects, I would like to see improvements in networking configuration, particularly regarding ov...

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Product Reports

Pure FlashArray X NVMe

Download Pure FlashArray X NVMe product report

IBM FlashSystem 9100 NVMe

Download IBM FlashSystem 9100 NVMe product report

Nutanix Unified Storage (NUS)

Download Nutanix Unified Storage (NUS) product report

Also Known As

Pure FlashArray//X NVMe, Pure FlashArray//X, FlashArray//X

IBM FlashSystem 9100, FlashSystem 9100

Nutanix Files Storage, Nutanix Volumes Block Storage, Nutanix Objects Storage

Overview

Pure Storage FlashArray//X is the world’s first enterprise-class, all-NVMe flash storage array. It represents a new class of storage – shared accelerated storage, which is a term coined by Gartner – that delivers major breakthroughs in performance, simplicity, and consolidation.

Pure Storage

IBM FlashSystem 9100 combines the performance of flash and Non-Volatile Memory Express (NVMe) end-to-end with the reliability and innovation of IBM FlashCore technology and the rich features of IBM Spectrum Virtualize - all in a powerful 2U enterprise-class storage system. Providing intensive data driven multicloud storage capacity, FlashSystem 9100 is deeply integrated with the software defined capabilities of IBM Spectrum Storage allowing you to easily add in the multicloud solutions that best support your business.

IBM

Nutanix Unified Storage provides high availability and seamless cloud platform integration, ensuring robust redundancy, scalability, and streamlined management. It supports hybrid cloud connectivity, enhancing storage security and performance.

Nutanix Unified Storage is designed for effective data protection across block, file, and object storage, offering features like ransomware detection and a centralized management interface through Prism Central. Users gain improved SLAs and IT cost savings through its efficient performance. Despite its user-friendly interface, there is a demand for enhanced security measures such as Multi-Factor Authentication and DLP. While its resilience is notable, users seek improvements in protocol compatibility, storage capabilities, pricing, and support processes.

What are the most important features of Nutanix Unified Storage?

User-Friendly Interface: Simplifies storage management and monitoring.
High Availability: Ensures continuous operation and reliability.
Seamless Cloud Integration: Compatible with platforms like Azure and AWS.
Robust Redundancy: Protects data against hardware failures.
Scalable Architecture: Easily adapts to growing data storage needs.
Ransomware Detection: Enhances data protection measures.

What benefits and ROI might users find in reviews?

Improved SLAs: Increased service reliability and performance.
IT Cost Savings: Reduces expenses through efficient resource use.
Enhanced Security: Stronger data protection and reduced risk.
Centralized Management: Easier control and monitoring from one dashboard.

Industries implement Nutanix Unified Storage for tasks such as file storage, database performance improvement, and storage solution consolidation. Companies deploying virtual machines, securing against ransomware, connecting hybrid clouds, and backing up data find it useful. It supports workloads like Citrix VDI, Kubernetes, and research data, assisting many organizations migrating from legacy storage for better cost efficiency and reduced data center footprints.

Nutanix

Sample Customers

Fremont Bank, Judson ISD, The Nielsen Company

Information Not Available

JetBlue, International Speedway Corporation, Volkswagen SAIC, Brighton and Hove City Council, Foresters Financial, Janus International Group, Cloud Comrade, Serco

IBM FlashSystem 9100 NVMe vs. Nutanix Unified Storage (NUS)