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

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Comparison Buyer's Guide

Executive SummaryUpdated on Sep 18, 2024

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

Everpure FlashArray
Sponsored
Ranking in All-Flash Storage
4th
Average Rating
9.0
Reviews Sentiment
7.3
Number of Reviews
218
Ranking in other categories
No ranking in other categories
IBM FlashSystem 9100 NVMe
Ranking in All-Flash Storage
28th
Average Rating
8.6
Reviews Sentiment
7.5
Number of Reviews
22
Ranking in other categories
NVMe All-Flash Storage Arrays (13th)
Nutanix Unified Storage (NUS)
Ranking in All-Flash Storage
7th
Average Rating
8.8
Reviews Sentiment
7.2
Number of Reviews
119
Ranking in other categories
Software Defined Storage (SDS) (2nd), Public Cloud Storage Services (3rd), File and Object Storage (3rd), NVMe All-Flash Storage Arrays (4th)
 

Mindshare comparison

As of May 2026, in the All-Flash Storage category, the mindshare of Everpure FlashArray is 7.5%, up from 6.3% compared to the previous year. The mindshare of IBM FlashSystem 9100 NVMe is 0.9%, up from 0.5% compared to the previous year. The mindshare of Nutanix Unified Storage (NUS) is 1.4%, up from 0.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
All-Flash Storage Mindshare Distribution
ProductMindshare (%)
Everpure FlashArray7.5%
Nutanix Unified Storage (NUS)1.4%
IBM FlashSystem 9100 NVMe0.9%
Other90.2%
All-Flash Storage
 

Featured Reviews

Sowjanya MV - PeerSpot reviewer
Technical Lead at Wipro Limited
Has improved performance for mission-critical workloads and enabled seamless non-disruptive upgrades
The availability is 99.99%, which is the main factor any customer would need because their data should be available whenever they want to access it. This is one main critical thing. It is very easy to upgrade since Pure Storage FlashArray handles it well. Everything is non-disruptive now; previously, there were forklift shifts, but now that is not the case. Pure Storage FlashArray says no to forklift upgrades. Usually hardware requires downtime, but Pure Storage FlashArray has improved their footprint so that they are not asking for downtime; everything is just a non-disruptive activity, which is why customers are more inclined towards Pure Storage FlashArray. Customers want more of the models in their environment due to the performance they are giving, and everything is in one Pure1 Array console where we can view all the models on one page or just an orchestration tool. You don't miss anything; you have replication, notifications about replication, and details about which host groups replication is happening in and if that replication is successful or failed. On a daily basis, our purpose is to create volumes for infrastructure; our daily activities include creating volumes and mapping them to the host, doing any migrations from a VM, clearing the data stores, and carving the volumes to those VMs. One key factor is the data compression with a ratio of 5:1, focusing on space efficiency, inline deduplication, and the compression Pure Storage FlashArray works on; that is a major factor we can suggest to any customer. Analytical capabilities are crucial. Daily, we check the throughput and consumption, and Pure Storage FlashArray provides predictions for one year regarding usage. This prediction helps plan updates well ahead. For support, we just raise a case, and they follow up and get it done. There is also AI readiness, but with the model R2, we don't have much of that AI readiness. For others, we do have AI readiness that predicts capacity based on daily or monthly trends, enabling us to analyze how much space we need or if we need to expand the disk shelf. From an operational point of view, a good feature is that if you accidentally delete a volume, it will be retained in the destroyed state for the next twenty-four hours, which is not the same with any other vendor. I have worked in this storage domain for the past fifteen years, and this option is remarkable, benefiting any L1 or L2 engineer. Additionally, from a compliance perspective, Pure Storage FlashArray has REST APIs enabled. I have not explored automation much, but from a security standpoint, it is strong with encryption data. If you want to automate, you can easily integrate with all clouds and explore Pure Cloud for scheduling workloads, including volume creation. Customers find benefit in Pure Storage FlashArray's single management pane of glass due to the dual controller and active-active setup. If one of the controllers goes down, all workloads automatically shift to the other controller, ensuring their data is safe and accessible at all times. This is a highlighted feature that any customer desires because their data should always be accessible. For SAN workloads, we use Pure Storage FlashArray because for SAN FC fiber channel, we don't use it; we use NetApp for NAS activities. We have clearly split this, so SAN is for mission-critical applications, while network-attached storage handles file systems. This architecture helps us maximize the benefit from Pure Storage FlashArray due to the significant workloads from this giant retail client. From a footprint and energy consumption perspective, you can see energy consumption from the Pure1 storage portal on a daily basis, and it is very compact. The three models we use consume only three units, which is quite low. From a footprint and data center perspective, it doesn't occupy much space. As everything moves to cloud, there are requirements to avoid excess spending on data centers, and Pure Storage FlashArray is efficient in energy consumption and is environmentally friendly.
Yacine Bouakttaya - PeerSpot reviewer
Chief Technology Officer North Africa at Huawei
High-speed data processing has improved billing cycles but performance headroom still needs growth
In terms of improvement regarding IBM FlashSystem 9100 NVMe, I can compare with other competitors, especially regarding solution architecture. Data resiliency can be a concern because IBM can reach up to only four controllers, while others like Dell EMC can support up to eight controllers with better resiliency without service staff. Additionally, the SBC one benchmark is a storage performance console that stresses different storage solutions like Dell EMC and NetApp. It generates metrics of IOPS and latency, showing that the competition can have two million IOPS, significantly outperforming IBM's capabilities. As for the capability of scaling, we can see the limitations in reaching such high-performance levels.
Amarnath Charugundla - PeerSpot reviewer
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.

Quotes from Members

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

Pros

"I am satisfied with this solution, and we plan to keep using this solution."
"After installing Pure, the processes that would take 40 minutes to two hours to complete are now done in five minutes."
"This solution has improved our organization in the way that we used to see latency but now with this solution we don't. It also has good performance. Latencies have come down for our performance in the SQL databases. We can put a lot more in a lot less in terms of space savings. We also save data center space have good deduplication."
"The performance is great."
"FlashArray has many valuable features, it's very user-friendly and it has high availability, so there is comparatively less downtime."
"It is always out of the box, and ready to use."
"The top-tier support and reliable storage are the most valuable features of this solution."
"We are very happy with the data deduplication and compression ratio that we have on the platform."
"The most valuable feature of IBM FlashSystem 9100 NVMe is the snapshot. We use it daily for all of the storage units."
"You get value for money, because the product is good in terms of control failure."
"What I like about the product are its high availability, maximum efficiency in performance, and its ability to handle a high level of I/O operations."
"IBM FlashSystem provides the same software on each box, including virtualized solutions."
"It's easy to use, has good stability, and many features."
"IBM FlashSystem 9100 NVMe is easy to use and comes with good performance."
"The most valuable features of IBM FlashSystem 9100 NVMe are its steady performance and usefulness in high-traffic environments."
"The product is a game-changer; IBM changed the game architecturally by moving computational resources into the flash media."
"The pricing, setup costs, and licensing of Nutanix Unified Storage (NUS) are amazing, in my view."
"We can utilize mixed storage block-sized objects and combine various databases within a unified interface."
"Initially, our application developer team struggled with storage availability and capacity, but now with Nutanix Unified Storage (NUS), we are not seeing any issues, and no developers report those problems, making it a good choice for us."
"Nutanix Objects is reliable."
"I strongly recommend Nutanix Unified Storage (NUS) to all users as a modern cloud computing system, offering significant cost savings for clients, customers, and vendors while providing excellent cloud infrastructure operations."
"Nutanix Unified Storage (NUS) is very scalable."
"The customer service executives of all Nutanix products are active and responsive."
"What I appreciate most about Nutanix Unified Storage (NUS) is how easy it is to use and how simple it is to create new volumes and containers, and it's pretty quick."
 

Cons

"The GUI is simplistic and basic. I feel like it's explanatory, but not enough, it needs a little more to it."
"Larger capacity and more storage ports would be the two things I'd like to see."
"The price is too high."
"Some services could be inserted directly into the SAN, so Pure Storage could complete with the HyperFlex."
"Pure Storage's logs could provide more visibility to the end-user. The logging algorithms are different from those of other vendors. For example, Cisco's logs provide extensive troubleshooting data, whereas Pure Storage logs offer limited information. We have to contact support to get more information."
"We would like to see more development on their Copy Automation Tool (CAT) for Oracle, as well as better integration for our customers running Oracle VM."
"I would like some performance analytics which go deeper than today. It should be specific to some hosts and applications."
"Had some issues with Purity not being entirely compatible with VMware ESXi."
"IBM's support is not good. I experienced a big problem where I opened the console IBM Storage and would see that something was broken. I called the call centers, and I said, "I have a problem. My drive is not working." They want me to give them the serial number, I gave it to them and they told me "I cannot find your product. Your product is not here.""
"The tool's architecture is complex. It also needs to add data utilization reports."
"The support 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."
"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 currently at the end of its lifespan and will soon become obsolete in the markets."
"In terms of improvement regarding IBM FlashSystem 9100 NVMe, I can compare with other competitors, especially regarding solution architecture."
"The pricing should be more competitive."
"We have had to deal with some infrastructure and general cluster issues but these issues don't impact storage."
"I haven't had any issues with the solution so far."
"Its features can be further enhanced from the DR and high availability points of view to match other vendors, such as NetApp."
"Lowering the price would improve this product."
"The integration feature with Nutanix Unified Storage (NUS) could be improved, maybe into a more stabilized version."
"Perhaps Unified Storage could be improved by including artificial intelligence to make searches more effective. Also, if someone has access who shouldn't, it could automatically update, so I do not need to physically remove permission. The platform could do it automatically. AI could make it more self-service."
"It would be beneficial if there were a migration tool for the new way of syncing data for data protection."
"Improving quota policies would be advantageous, particularly by offering the option to implement blocking instead of just issuing warnings."
 

Pricing and Cost Advice

"There are no licensing fees or other costs."
"There are no fees for licensing. The hardware is paid for only once."
"It's expensive, but you get what you pay for."
"There should be quite a bit of reduction of TCO with just licensing (and stuff) because we run the VM environment off it."
"Pricing is very competitive, and it's better than other competitors."
"The price, in general, is around $100,000, however, I know it costs more."
"The pricing is very attractive and it delivers performance for the money."
"Pure Storage has not helped us to reduce our licensing costs."
"The solution's price is competitive."
"The price of IBM FlashSystem 9100 NVMele can be considered affordable when taking into account the operating system that is required for it to function properly. This operating system, which is licensed by IBM, may carry a higher cost, but it is worth the investment for larger corporate entities, such as insurance companies, Fortune Five companies, and banks, who make up a significant portion of their target market. The FlashSystems are designed for larger corporations and multinational enterprises, and may not be the most cost-effective solution for smaller businesses."
"On a scale of one to ten, where one is a low price and ten is a high price, I rate the pricing an eight."
"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 the FlashSystem 9100 NVMe is reasonable."
"The solution is priced well."
"The product has an average cost."
"Price-wise, the solution offers excellent pricing to its users. In short, the prices offered by the solution are competitive compared to similar solutions."
"Compared to other solutions, NUS is cost-effective and efficient. It also has good performance."
"I find Nutanix Files Storage competitively priced, even its feature set. Its price is seven out of ten."
"My company is in Brazil, and making the payments in dollars is tough for our organization."
"Nutanix Unified Storage is competitively priced. There aren't any competitors that can do much better for the same price."
"The pricing is fair."
"If we compare the cost of Nutanix Objects Storage to other solutions such as VMware licenses, our current choice is Nutanix Objects Storage. This solution is more cost-effective. However, adding VMware to Nutanix would not be a cost-efficient decision, which is why we do not use it anymore."
"The product has an annual licensing fee."
"I assume Nutanix Unified Storage (NUS) has helped reduce our total cost of ownership."
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Top Industries

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

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business66
Midsize Enterprise36
Large Enterprise152
By reviewers
Company SizeCount
Small Business8
Midsize Enterprise8
Large Enterprise6
By reviewers
Company SizeCount
Small Business29
Midsize Enterprise31
Large Enterprise68
 

Questions from the Community

Which should I choose: HPE 3PAR StoreServ or Hitachi Virtual Storage Platform F Series?
Both are great platforms, but if you are considering all flash solutions, I would recommend you to consider Pure Stor...
What is your experience regarding pricing and costs for Pure Storage FlashArray?
The only issue is the pricing. Because we have competition, our customers always take another brand and say they can ...
What needs improvement with Pure Storage FlashArray?
Our customers using Dell storage also use competing solutions. Our customers who have Everpure FlashArray may also ha...
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 is your primary use case for IBM FlashSystem 9100 NVMe?
We use IBM FlashSystem 9100 NVMe as a storage device in the IT industry.
What is your experience regarding pricing and costs for Nutanix Unified Storage?
Nutanix Unified Storage (NUS) helps to reduce the total cost of ownership in general. However, I am getting complaint...
What needs improvement with Nutanix Unified Storage?
I hope Nutanix Unified Storage (NUS) will improve the clarity of the licensing uses and enhance the reporting and ana...
What advice do you have for others considering Nutanix Unified Storage?
The pros of Nutanix Unified Storage (NUS) compared to EMC technologies include the fact that Nutanix Unified Storage ...
 

Also Known As

Pure Storage FlashArray
IBM FlashSystem 9100, FlashSystem 9100
Nutanix Files Storage, Nutanix Volumes Block Storage, Nutanix Objects Storage
 

Overview

 

Sample Customers

Nielsen, Lamar Advertising, LinkedIn, Betfair, UT-Dallas
Information Not Available
JetBlue, International Speedway Corporation, Volkswagen SAIC, Brighton and Hove City Council, Foresters Financial, Janus International Group, Cloud Comrade, Serco
Find out what your peers are saying about IBM FlashSystem 9100 NVMe vs. Nutanix Unified Storage (NUS) and other solutions. Updated: April 2026.
893,311 professionals have used our research since 2012.