IBM Spectrum Accelerate vs Nutanix Unified Storage (NUS) comparison

IBM and Nutanix are both solutions in the Software Defined Storage (SDS) category. IBM is ranked #24, while Nutanix is ranked #3 with an average rating of 8.7. IBM holds a 1.7% mindshare in SDS, compared to Nutanix’s 5.3% mindshare. Additionally, 100% of IBM users are willing to recommend the solution, compared to 98% of Nutanix users who would recommend it.

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Executive SummaryUpdated on Dec 5, 2024

IBM Spectrum Accelerate and Nutanix Unified Storage (NUS) compete in the storage solutions market, focusing on optimizing resource management and data accessibility. While IBM Spectrum Accelerate is noted for ease of use and support, NUS often has the upper hand in feature robustness and innovation, which is crucial for enterprises prioritizing versatile functionalities.

Features: IBM Spectrum Accelerate offers reliable and scalable block storage, optimized for IBM environments. It features dynamic provisioning and high data resiliency, enabling stability. Nutanix Unified Storage provides consolidated file and block services, simple management via Prism, and advanced analytics, allowing it to meet diverse storage needs within a single platform.

Ease of Deployment and Customer Service: IBM Spectrum Accelerate provides a straightforward deployment model with strong support, focusing on minimizing downtime and facilitating seamless scaling within IBM environments. Nutanix Unified Storage offers efficient deployment within hyper-converged infrastructure, supported by comprehensive service packages. Its user-friendly management interface simplifies operations, appealing to businesses seeking rapid implementation with minimal operational overhead.

Pricing and ROI: IBM Spectrum Accelerate, though with a higher initial setup cost, enhances existing IBM setups for significant ROI. Nutanix Unified Storage offers competitive pricing that emphasizes cost-effectiveness, delivering better ROI through reduced operational costs and unifying various storage solutions, ideal for businesses aiming to simplify their infrastructure.

To learn more, read our detailed IBM Spectrum Accelerate vs. Nutanix Unified Storage (NUS) Report (Updated: July 2025).

Buyer's Guide

IBM Spectrum Accelerate vs. Nutanix Unified Storage (NUS)

July 2025

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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 Storage FlashBlade

Mindshare comparison

As of August 2025, in the Software Defined Storage (SDS) category, the mindshare of Pure Storage FlashBlade is 4.4%, up from 4.4% compared to the previous year. The mindshare of IBM Spectrum Accelerate is 1.7%, up from 0.9% compared to the previous year. The mindshare of Nutanix Unified Storage (NUS) is 5.3%, up from 3.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Software Defined Storage (SDS)

Featured Reviews

Eric Black

Solutions Architect at Recovery Point Systems

The ability to leverage multi-tenancy along with immutability is a huge benefit for us

The only thing I feel FlashBlade is missing is the SOS API. If it had SOS API, that would put it well over the top. Veeam Backup specifically has started to streamline their API, and they are doing that with SOS API. They have optimized it. Any of the S3 devices out there that support this SOS API can have far more API calls at once. On our side, that translates to better restoration. With SOS API, it can leverage far more restorations at a single given time or read from the device in simple terms. That results in maximizing the output and throughput from the device itself.

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reviewer1154616

IS Auditor at a healthcare company with 10,001+ employees

A robust solution with good performance and support

This is a solution that scales well, although I think that we have stabilized in terms of use. With respect to scalability, we have an open question as to whether we will be able to grow into a cloud-based deployment. We don't know in what ways this solution will assist us with the migration, or whether we can still use it for DR. We don't know about the type of backup, be it full, incremental, or otherwise. We are also looking for a cost-savings if we migrate. These are things that we will find out over time. We have about two petabytes of data.

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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

"What I like best about Pure Storage FlashBlade is its object storage functionality, plus it has fast underlying hardware. Pure Storage FlashBlade is also very stable. I find its stability one of its valuable features."

"We can capacity plan at a greater level than we used to."

"The most valuable features include the ease of implementation, ease of use and the speed that you can do backup and recovery on."

"It's very easy-to-use."

"The tool's most valuable features are data warehousing, speedy recovery, and analytics. Its latest release is cost-effective."

"FlashBlade offers low latency, high throughput, and seamless scalability."

"The most valuable features are the Metro clustering, and disaster recovery."

"The solution is able to handle workloads and is easy to use. It allows us to actually manage the boxes in less time."

More Pure Storage FlashBlade pros

"The most valuable feature is the robustness, which is typical of IBM because their software generally just works."

"The ease of use is the solution's most valuable aspect. It's very user-friendly."

"The most valuable feature of Nutanix Unified Storage is the ease of setting up file shares. As a global company with data centers around the world, our files clusters are accessible globally. Managing and setting up shares for our over 12,000 employees is straightforward."

"Redundancy and availability are valuable. We have several nodes, so it stays up, and there is redundancy. Then there is availability."

"Nutanix Unified Storage is easy for end users to access. They can use it like any other drive on their systems. We have mapped it in the user system so they can scan files and store them. They can use it just like an Android drive."

"I rate Nutanix Unified Storage (NUS) a ten out of ten."

"The most valuable features are the interface and support."

"The reliability and stability of Nutanix Unified Storage (NUS) are very good, and after almost four or five years of usage, we haven't encountered significant issues."

"The solution is easy to use, share, and manage."

"The biggest advantage we find with Nutanix Unified Storage (NUS) is the performance, due to it being hyper-converged and using all-flash nodes. The storage is very responsive, and it's significantly easier to manage from the Nutanix Files platform that comes along with NUS Pro."

More Nutanix Unified Storage (NUS) pros

Cons

"The technical support needs to improve. When we open a case, it is auto assigned to a support tech person. Nine out of ten times, we get an email right back saying that person is off until tomorrow. I cannot handle that. They just did this over the weekend to us, too. I had to call our rep and have them do something about it."

"I have not seen ROI."

"Its configuration should be easier."

"I would like to see more deduplication."

"I would like to see the licensing fees improved as well as the price per terabytes."

"We initially encountered challenges with the assembly process due to issues with the documentation required during setup, an area where Pure Storage needs improvement."

"The only thing I feel FlashBlade is missing is the SOS API. If it had SOS API, that would put it well over the top."

"It would be nice if you could store file-based in the same box with the same technology."

More Pure Storage FlashBlade cons

"The reporting mechanisms need improvement."

"he interface is not user-friendly so the ease of use could be improved."

"There should be more automation. Going deeper, I would appreciate seeing out-of-the-box automation for storage provisioning and maybe some more customer-facing, web portal-type or API functionality to Jira or ServiceNow."

"The integration feature with Nutanix Unified Storage (NUS) could be improved, maybe into a more stabilized version."

"The solution is very expensive."

"The implementation is a little bit complex and should be made easier."

"There is an occasional language barrier between some of the technicians, which can be challenging; however, that doesn't prevent us from being assisted, as they can remote in and use Pulse to view our cluster and gather logs and reports."

"The only thing I would say is missing for us it is FTP protocol compatibility."

"I really want some AI or even basic AI to be included in the Nutanix Unified Storage (NUS) license."

"It would be beneficial if there were a migration tool for the new way of syncing data for data protection. Currently, we have 30 days' worth of snapshots going back and forth for data protection. A migration tool to transition to better syncing for DR would be valuable, as otherwise, we lose 30 days because of the storage requirement."

More Nutanix Unified Storage (NUS) cons

Pricing and Cost Advice

"I understand that it is competitively priced compared to other brands."

"Our customers have seen a reduction in TCO."

"The price could be cheaper."

"I rate the tool's pricing a seven to eight out of ten."

"Our licensing is renewed annually."

"The price is a little high."

"The pricing is relatively expensive due to the FlashBlade technology. However, for companies needing quick and reliable data access, the cost is justified."

"The pricing for FlashBlade is between cheap and moderate."

More Pure Storage FlashBlade pricing and cost advice

"If you are cost-sensitive then this solution is not for you."

"For a database, on a yearly basis, we pay approximately $3,500 for licensing fees. The solution is sold as a subscription on a yearly basis so there are no other ancillary costs."

"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 pricing of Nutanix is generally higher compared to other vendors, which is a common observation, but it provides value through its support and features offered to customers."

"In my opinion, the product is fairly priced."

"We are Nutanix partners, so it is pretty good. With the free terabyte that comes with the Nutanix clusters, we have started to build proposals for the clients. The price adjustment with the new policy of Nutanix Unified Storages seems attractive. Let us see if it has results."

"Nutanix Unified Storage pricing is reasonable."

"With all of the Nutanix equipment, the licensing is expensive. We operate in the enterprise space, but we're a midsized company. At times, the price tag is a little bit shocking for a company with only 35 employees. We're not a Fortune 500 company, but we deal with Fortune 500 drug and energy companies. We have to play in that enterprise space if we're going to have enterprise customers. I'm very price-conscious, but I understand that if I want the best, I've got to pay the price."

"I assume Nutanix Unified Storage (NUS) has helped reduce our total cost of ownership."

"Nutanix Unified Storage was cheaper than other solutions we evaluated."

More Nutanix Unified Storage (NUS) pricing and cost advice

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Top Industries

By visitors reading reviews

Computer Software Company

13%

Financial Services Firm

12%

Manufacturing Company

10%

Government

No data available

Computer Software Company

30%

Manufacturing Company

Educational Organization

Financial Services Firm

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

Questions from the Community

What do you like most about Pure Storage FlashBlade?

The tool's most valuable feature is its fast performance, especially in handling snapshots. It helps during power out...

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What is your experience regarding pricing and costs for Pure Storage FlashBlade?

The pricing of Pure Storage FlashBlade is expensive compared to other products I used from other companies in the pas...

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What needs improvement with Pure Storage FlashBlade?

I believe there is not much improvement needed because they have everything we need, but the interface is a little bi...

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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.

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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...

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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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Comparisons

Dell PowerScale (Isilon) vs Pure Storage FlashBlade

Compared 19% of the time

MinIO vs Pure Storage FlashBlade

Compared 10% of the time

Red Hat Ceph Storage vs Pure Storage FlashBlade

Compared 10% of the time

Pure Storage FlashArray vs Pure Storage FlashBlade

Compared 10% of the time

NetApp AFF vs Pure Storage FlashBlade

Compared 3% of the time

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StorMagic SvSAN vs IBM Spectrum Accelerate

Compared 39% of the time

Red Hat Ceph Storage vs IBM Spectrum Accelerate

Compared 33% of the time

IBM Spectrum Scale vs IBM Spectrum Accelerate

Compared 28% of the time

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Red Hat Ceph Storage vs Nutanix Unified Storage (NUS)

Compared 13% of the time

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

Compared 13% of the time

Microsoft Storage Spaces Direct vs Nutanix Unified Storage (NUS)

Compared 9% of the time

MinIO vs Nutanix Unified Storage (NUS)

Compared 9% of the time

VAST Data vs Nutanix Unified Storage (NUS)

Compared 4% of the time

More Nutanix Unified Storage (NUS) Competitors

Product Reports

Buyer's Guide

Pure Storage FlashBlade

August 2025

Download Pure Storage FlashBlade product report

Buyer's Guide

Software Defined Storage (SDS)

August 2025

Download IBM Spectrum Accelerate product report

Buyer's Guide

Nutanix Unified Storage (NUS)

August 2025

Download Nutanix Unified Storage (NUS) product report

Also Known As

No data available

IBM XIV

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

Overview

FlashBlade is the industry’s most advanced scale-out storage for unstructured data, powered by a modern, massively parallel architecture to consolidate complex data silos (like backup appliances and data lakes) and accelerate tomorrow’s discoveries and insights.

Pure Storage

IBM Spectrum Accelerate is a software-defined block storage solution designed for rapid deployment across heterogeneous infrastructure for hybrid cloud and delivering consistent service levels to a dynamic workload mix. It is based on proven grid-architecture, enterprise-scale IBM XIV technology. IBM Spectrum Accelerate can be deployed, including as hyper-converged infrastructure, on any x86 server, on pre-installed third-party appliances or on public cloud infrastructure, and is available as a service on IBM Cloud infrastructure.

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

ServiceNow, Mercedes-AMG Petronas Motorsport, Dominos, Man AHL

Silverpop

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

Buyer's Guide

IBM Spectrum Accelerate vs. Nutanix Unified Storage (NUS)

July 2025

Free Report: IBM Spectrum Accelerate vs. Nutanix Unified Storage (NUS)

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