IBM FlashSystem vs Nutanix Unified Storage (NUS) comparison

IBM FlashSystem 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:

Categories and Ranking

Pure FlashArray X NVMe

Mindshare comparison

As of June 2025, in the All-Flash Storage category, the mindshare of Pure FlashArray X NVMe is 0.8%, up from 0.8% compared to the previous year. The mindshare of IBM FlashSystem is 6.6%, down from 6.8% compared to the previous year. The mindshare of Nutanix Unified Storage (NUS) is 0.6%, up from 0.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.

All-Flash Storage

Featured Reviews

Eugene Hemphill

Sales Manager at Multicomputos PR

Helps to save money and resources with the data compression feature

One point I'd like to improve is that the tool should start selling small boxes again. It discontinued some products and is focusing on bigger, more capable boxes, neglecting the SMB market. Even though it's not a big market, it shouldn't have removed them. One way to improve the product is to add an operational assistant that doesn't depend on VMware. It could also establish more alliances with other operational systems.

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Raanan Sitton

Vice President Sales at BELOCAL LTD

Offers cost-effective storage for small companies with budget constraints

IBM FlashSystem 5300 is offered at a very low cost in Israel, which is advantageous for small companies. However, other features like deduplication and compression do not perform effectively. The price sensitivity makes it a viable option for clients with budgetary constraints, as it allows us to secure deals based on the cost rather than advanced performance.

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Vipin Kumar Sha

Cloud Engineer at CtrlS Datacenters Ltd

Pricing challenges overshadow efficient data handling and fast deployment

In terms of improvement areas for Nutanix Unified Storage (NUS), pricing is a significant issue, and another aspect is that the export of Nutanix backups does not support CD-ROMs, which is a disadvantage. Currently, it only supports QZ bus types for backups, which limits compatibility. When comparing Nutanix Unified Storage (NUS) with other solutions in the market, it falls short because it only supports iSCSI backups, while competitors also support QZ, iSCSI, fiber channel, and NVMe storage. The solution requires no maintenance for patching since it is designed effectively, but Nutanix Unified Storage (NUS) does not support fiber channel connectivity or external attached storage through NAS, limiting its compatibility. Additionally, technical support response time and efficiency are lacking in comparison to competitors.

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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

"One of the best features is the support, which is excellent."

"The database workloads are pretty fast because I frequently move data from here to there."

"We are satisfied with the performance as it is significantly faster compared to traditional storage options."

"Technical support has been helpful and responsive."

"The latency is good."

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

"It's incredibly easy to use and greatly simplified our ability to both deploy and manage our storage subsystems."

"The Pure1 component is most valuable at this point in time when comparing it with EMC. Pure1 is where you can have your diagnostics in the cloud, so you can look at things from your mobile phone."

More Pure FlashArray X NVMe pros

"The initial setup was really straightforward. It was not complex. Deployment took one month, due to the data migration duration."

"The most valuable feature of the solution is replication...Stability-wise, I rate the solution a nine out of ten."

"The performance monitoring feature is useful as it can report in 15 minute intervals by hour, day, week, month, or by a custom date range."

"Flash disk with Easy Tier option"

"The most valuable features were the performance of the array, i.e., very low latency and high IOPS. Plus, the management interface is very easy to use."

"The most valuable feature of the solution is compression."

"The most valuable features are deduplication and compression, which together, enable you to have more space."

"The maintenance service and support from IBM is very good."

More IBM FlashSystem pros

"Some of the features that we use include replication and snapshot capabilities, especially from remote locations to our data centers. The main benefit our company sees from using Nutanix Unified Storage is simplification. In the past, we used three-tier solutions with a lot of complexity and operational overhead. Now, we want to focus on the layers above. I want to have storage available, but I don't want to have to think about it. I want it to work without any issues."

"What I appreciate most about Nutanix Unified Storage (NUS) is its user-friendly nature."

"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."

"The product's benefits stem from the ease of use and management it offers to its users."

"The interface is quite simple. It is very good. It is easy to configure. It also has a powerful CLI."

"My opinion is that this solution has very good stability."

"The availability of the environment is incredible, and with Prism Central, you're able to diagnose and go over issues quickly."

"Nutanix Unified Storage (NUS) is very fast in terms of migration and data access with respect to VM, OS, and storage, experiencing a 30% faster performance compared to VMware."

More Nutanix Unified Storage (NUS) pros

Cons

"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."

"Many options to check performance, like read, writes, random writes, and random reads, are missing in Pure FlashArray X NVMe."

"I want to see Pure Storage not only be for fast storage, but I want to see it be for the entire data center."

"We've seen that when we create a POD in synchronous mode, it increases the latency."

"The tool's pricing is higher than competitors."

"Maybe the price can be reduced since the solution is very expensive."

"They could add more support for file storage and different types of storage."

"I'd like to see the product implement active replication for vehicles such as VMware."

More Pure FlashArray X NVMe cons

"We use some open-source tools for monitoring, such as Grafana and it should be bundled along with IBM FlashSystem."

"There is room for improvement in the troubleshooting part, specifically related to IBM Spectrum for Insight."

"The interface of this solution could be improved."

"The basic setup can be challenging when it comes to certain IP addresses and the configuration of the IP. You have to go in to different menus to makes changes and ensure it is stable."

"The deduplication and compression ratio is not very good. It's not reaching a very high ratio."

"Sometimes the performance is effective but it gets resolved in the process."

"Customization features must be improved."

"Events/log analysis tools."

More IBM FlashSystem cons

"The pricing can be quite high."

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

"Unified Storage failed to fulfill our object storage requirements."

"It functions as intended. We don't have any real requests or improvements. We're primarily focused on protecting our data. However, we use Varonis, so it would be nice to have better integration with that."

"I would like Nutanix to provide a solution for virtual disks. This is the main problem for which we want a solution."

"From the speed perspective of Nutanix Unified Storage (NUS), it could enhance some features to make it the best storage solution in the market."

"I have heard that there have been latency problems."

"I would them to have more communication with other platforms, and it appears they are already doing that."

More Nutanix Unified Storage (NUS) cons

Pricing and Cost Advice

"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."

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

"With Pure Storage, we would like to continue seeing price reductions with flash storage. I don't think we're any different than anybody else when we continue to look to the industry for price reductions of both NVMe and traditional SSD storage. We would like to see these prices continue to decline and erode, even displacing large spinning disks."

"The licensing is on a yearly basis."

"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."

"Given its price, Pure is not the first option."

"Our licensing fees are $500,000+ USD."

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

More Pure FlashArray X NVMe pricing and cost advice

"I price of IBM FlashSystem is reasonable and competitive."

"Our customers would like IMB FlashSystem to be less expensive."

"I find the pricing of the solution to be very reasonable."

"The cost of the IBM FlashSystem is lower than the HPE solution."

"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."

"The pricing has been very competitive for the last few years. IBM got to the point where they changed the pricing model and we feel very comfortable with the pricing. It's very competitive. Over the last two years, IBM has been coming up with all kinds of interesting promos, especially for the SMB systems. That makes it very competitive price-wise and in terms of performance..."

"The tool is cost-efficient."

"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."

More IBM FlashSystem pricing and cost advice

"It's competitive and attractive for moving things to it and then prioritizing those newly freed up resources for something else."

"My company is in Brazil, and making the payments in dollars is tough for our organization."

"It's definitely a lot cheaper than buying a new EMC array. We bought a five-year commitment on all the hardware and software. I don't know what the cost was back then, but I do remember it was cheaper."

"The price of the license is expensive when comparing it to traditional storage."

"Its pricing is good to okay. It is not super inexpensive, but it is still competitive. Everything could always be lower."

"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."

"The licensing model the tool has is cheaper than an HCI storage solution."

"I am not the one who makes the calls, but it seems to me that it was very competitive. Other solutions would have required dedicated hardware, so an additional CapEx has to be put in place. In that sense, it was definitely a more competitive option to go with Nutanix Files."

More Nutanix Unified Storage (NUS) pricing and cost advice

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Top Industries

By visitors reading reviews

Computer Software Company

15%

Financial Services Firm

11%

Manufacturing Company

11%

Government

Computer Software Company

14%

Financial Services Firm

11%

Manufacturing Company

Comms Service Provider

Computer Software Company

32%

Educational Organization

14%

Manufacturing Company

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?

I am an engineer and am not aware of the setup cost.

What needs improvement with Pure FlashArray X NVMe?

Adding some functions to the product would be beneficial. Storage replication should be essential, and the analytics ...

What do you like most about IBM FlashSystem?

It is simple to make an update.

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 bank...

What needs improvement with IBM FlashSystem?

The deduplication technology in IBM FlashSystem needs significant improvement. Other vendors like NetApp ( /products/...

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?

Nutanix solutions are often perceived as premium-priced, but they deliver substantial ROI in terms of performance, re...

What needs improvement with Nutanix Unified Storage?

Nutanix Unified Storage is already a robust and forward-thinking platform. That said, one area for potential improvem...

Dell PowerStore vs Pure FlashArray X NVMe

Comparisons

Compared 29% of the time

TrueNAS R-Series vs Pure FlashArray X NVMe

Compared 18% of the time

Pure Storage FlashBlade vs Pure FlashArray X NVMe

Compared 15% of the time

HPE Alletra Storage vs Pure FlashArray X NVMe

Compared 9% of the time

Dell Unity XT vs Pure FlashArray X NVMe

Compared 7% of the time

More Pure FlashArray X NVMe Competitors

Dell PowerStore vs IBM FlashSystem

Compared 22% of the time

Pure Storage FlashArray vs IBM FlashSystem

Compared 8% of the time

HPE Alletra Storage vs IBM FlashSystem

Compared 8% of the time

Huawei OceanStor Dorado vs IBM FlashSystem

Compared 8% of the time

NetApp AFF vs IBM FlashSystem

Compared 7% of the time

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Dell PowerScale (Isilon) vs Nutanix Unified Storage (NUS)

Compared 16% of the time

Red Hat Ceph Storage vs Nutanix Unified Storage (NUS)

Compared 15% of the time

MinIO vs Nutanix Unified Storage (NUS)

Compared 9% of the time

Microsoft Storage Spaces Direct vs Nutanix Unified Storage (NUS)

Compared 9% of the time

Amazon S3 vs Nutanix Unified Storage (NUS)

Compared 5% of the time

More Nutanix Unified Storage (NUS) Competitors

Product Reports

Pure FlashArray X NVMe

Download Pure FlashArray X NVMe product report

IBM FlashSystem

Download IBM FlashSystem 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 Storwize

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 products are enterprise computer data storage systems that store data on flash memory chips. Unlike storage systems that use standard solid-state drives, IBM FlashSystem products incorporate custom hardware based on technology from the 2012 acquisition of Texas Memory Systems. This hardware provides performance, reliability, and efficiency benefits versus competitive offerings.

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

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

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

IBM FlashSystem vs. Nutanix Unified Storage (NUS)