IBM Spectrum Virtualize vs Nutanix Unified Storage (NUS) comparison

IBM Spectrum Virtualize 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 Storage FlashBlade

Mindshare comparison

As of January 2026, in the Software Defined Storage (SDS) category, the mindshare of Pure Storage FlashBlade is 3.3%, down from 4.6% compared to the previous year. The mindshare of IBM Spectrum Virtualize is 2.1%, up from 1.5% compared to the previous year. The mindshare of Nutanix Unified Storage (NUS) is 4.1%, down from 4.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.

Software Defined Storage (SDS) Market Share Distribution
Product	Market Share (%)
Nutanix Unified Storage (NUS)	4.1%
Pure Storage FlashBlade	3.3%
IBM Spectrum Virtualize	2.1%
Other	90.5%

Software Defined Storage (SDS)

Featured Reviews

MikaelHellström

IT Manager at Regin Dalarna

Has handled backup storage needs reliably and supports seamless upgrades

In environments requiring high throughput and low latency, Pure Storage FlashBlade provides high throughput and normal latency, but we do not have any application that requires low latency right now, so the latency of three to five milliseconds is considered kind of high. Pure Storage FlashBlade's ability to integrate with enterprise applications is not important for us, as we only want to present an S3 bucket for our backup, which we have done, and it works very fast. We use the Purity software's data reduction techniques; we have a backup software that compresses everything before sending it to the S3 bucket, achieving a data reduction of 1.1 to one. I would recommend Pure Storage FlashBlade to other companies because it's a very fast and scalable solution for anyone who needs it. On a scale of 1-10, I rate this solution an 8.

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AhmedSorour

IT Specialist at Saudi Business Machines - SBM

Unified storage solution supports cross-vendor replication and diverse industries

One of the most valuable features of IBM Spectrum Virtualize is its virtualization capability. It allows for the creation of stretched clusters, which are crucial for running Linux-based workloads that need mirroring for boot disks. The solution also provides asynchronous and synchronous replication, supporting operations across different data centers. Its deployment options across public, private, and hybrid clouds add to its versatility.

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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

"It helps simplify our storage, because the user interface is very simple and the installation is easy."

"The performance of FlashBlade is excellent. It does not necessarily leverage the SOS API that some of the newer products leverage, but I found its speed pretty much on par and comparable. It is fast, and it does what it is supposed to do."

"Pure Storage FlashBlade's scalability is one of the most valuable features, and importantly, it always works, allowing for seamless upgrades."

"The tool's most valuable feature is its fast performance, especially in handling snapshots. It helps during power outages when we need to quickly move data between different data centers. It ensures efficient replication and helps maintain our data centers' uptime."

"The main feature I have found to be product replication."

"The ease of deployment and management has helped us simplify our storage. We also do not have to worry about capacity management as much. A lot of these things are native to Pure Storage."

"The onboarding and integrated monitoring tools are pretty good."

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

More Pure Storage FlashBlade pros

"We are happy with the support that IBM provides us."

"It has the ability to seamlessly move hardware in and out as we refresh technology."

"When we add storage behind it, the product is good for the customers because their customers do not notice that anything is happening due to the virtualization."

"The SVC gives excellent performance with tiered storage behind it."

"We can failover easily, because a lot of our data is replicated from family to the second replication."

"IBM provides exceptional technical support, which I rate as the best along with Cisco."

"One of the main features of Spectrum Virtualize is it virtualizes the servers from the storage. We have a very large infrastructure. A major advantage is when you get the aged storage arrays and you have to replace all of those."

"The ability to add the virtual machine on the Spectrum environment to sort out the data movers(DMs) and their schedules is a valuable feature. You are able to have, for example, four data movers to balance them so you do not have too much work on one data mover."

More IBM Spectrum Virtualize pros

"The initial setup is pretty straightforward. With a few clicks, you can stand up your storage. It reduces the overall life cycle of deployment within the ecosystem."

"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."

"I would recommend Nutanix Unified Storage. It's easy to use, and they are the best when it comes to storage services."

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

"The solution's most valuable features are its support and speed."

"The most important point is the simplicity of the API integration. We can leverage the API integrations and connect our hybrid-cloud network environment with Nutanix's cloud storage."

"We can utilize mixed storage block-sized objects and combine various databases within a unified interface."

"They have well-documented best practices and the interface is good."

More Nutanix Unified Storage (NUS) pros

Cons

"In the realm of micro-services, I think that Pure Storage can do well if they start getting in there and making their arrays more micro-services ready."

"The documentational aspect of FlashBlade needs improvement."

"On our dedupe during our initial buy, we were expecting a number a little higher like 4x. However, we are getting about 3.6. While it is close enough, it doesn't quite hit the numbers. So, this has been a challenge."

"I would like to see more monitoring capability included in the next release of this solution."

"Recently, while upgrading the version code, one of the controllers failed. Replacing the controller took between 14 to 20 days."

"They need better integration with public clouds along with a better hybrid solution."

"Pure Storage FlashBlade should improve on more cloud integration."

"I would like to see more VM-Aware features in the next release of this solution."

More Pure Storage FlashBlade cons

"I would like to see more baseline replication and integration with the operating system between Vmware and IBMI."

"NBME support and support for a higher Fibre Channel lengths could be improved, but those are already on the roadmap."

"The disk reliability is not that good."

"I hate I/O groups. If you start swapping I/O groups, they can be potentially risky. If they could get rid of the whole I/O group principle, the risk is not there anymore. I understand the fundamental thing about I/O groups, but they are risky."

"The training program could be improved."

"The case logging process is efficient, but resolving software problems takes too much time."

"Adding features for data deduplication is one area of improvement."

"Level 1 technical support needs improvement."

More IBM Spectrum Virtualize cons

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

"Customer service is more difficult to call and they do not responding as much as, for example, DataCore. It's not the same level of satisfaction compared to DataCore. Responses could be faster."

"It is challenging to configure access control settings."

"The pricing can be quite high."

"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."

"The solution should keep adding new features to be competitive in the market."

"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."

More Nutanix Unified Storage (NUS) cons

Pricing and Cost Advice

"Our customers have seen a reduction in TCO."

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

"We used a reseller for the purchase."

"It is within reason for what you get. From what we have found comparing it to other vendors, it is in the same range as others. Given the choice, we would definitely redeploy it based on the cost."

"Pure Storage FlashBlade is a hardware appliance, and it's very expensive if you compare its price with other solutions. You can get the same features and benefits from its competitor, VAST Data, but for half the price of Pure Storage FlashBlade."

"Licensing fees are paid yearly."

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

"Support is a separate line item. Support is a different cost, but whatever your support is now, that's what you're going to pay forever. If your support's $100 today, six years from now it's $100. It doesn't fluctuate unless you upgrade it, or change it, etc."

More Pure Storage FlashBlade pricing and cost advice

"I think it is a good value for the price."

"We would like the CPU cycle to save more on the licensing costs for us."

"It has a lot of advanced functions for a reasonable price."

"We have struggled with Pure Storage, but people are understanding that much of Pure has been consumer grade SSDs. Therefore, when the customer is really understands what they are getting, they realize that IBM presents the same sort of value as existing vendors."

"The entry point of pricing for this product is the most amazing price ever in the industry."

"Do a proof of concept, if you are not comfortable jumping in, but do it."

"I am very happy with the pricing. There is no comparison when it comes to pricing. I have looked at all solutions from EMC, Veritas, Hitachi, Dell, etc. None of them compares to IBM when it comes to pricing. I get great pricing from them."

"This solution came as an additional cost for the TSM package we chose."

More IBM Spectrum Virtualize pricing and cost advice

"The solution's pricing is better compared to other products."

"It's not the cheapest solution. It's in line with other solutions, but it offers features that the competitors don't have at any price point, especially with regard to analytics and ransomware prevention. No one else has any sort of object-based storage available. Nutanix Unified Storage is a lot more feature-rich. This is a situation where you get what you pay for."

"Nutanix Unified Storage isn't expensive."

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

"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."

"Compared to other solutions, NUS is cost-effective and efficient. It also has good performance."

"The product has an annual licensing fee."

"I hope that it will stay the way it is. We have seen the changes in VMware and what happened to them. I have heard that Nutanix will raise the prices, but I hope that they will not do that."

More Nutanix Unified Storage (NUS) pricing and cost advice

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Top Industries

By visitors reading reviews

Financial Services Firm

12%

Computer Software Company

10%

Manufacturing Company

10%

Government

Performing Arts

16%

Manufacturing Company

11%

Computer Software Company

Financial Services Firm

Computer Software Company

24%

Manufacturing Company

12%

Educational Organization

University

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	11
Midsize Enterprise	11
Large Enterprise	21

By reviewers
Company Size	Count
Small Business	11
Midsize Enterprise	4
Large Enterprise	31

By reviewers
Company Size	Count
Small Business	27
Midsize Enterprise	30
Large Enterprise	63

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...

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

Regarding pricing, it is okay; we needed exactly this in size, and the price was a lot lower than competitors, making...

What needs improvement with Pure Storage FlashBlade?

In my opinion, one way Pure Storage FlashBlade can be improved is by having more compatibility between the FlashArray...

What is your experience regarding pricing and costs for IBM Spectrum Virtualize?

IBM Spectrum Virtualize is not an expensive product. It offers flexibility with different flavors, whether appliance-...

What needs improvement with IBM Spectrum Virtualize?

IBM could improve IBM Spectrum Virtualize by bundling Storage Scale and Storage Virtualize into a single appliance. T...

What is your primary use case for IBM Spectrum Virtualize?

I primarily use IBM Spectrum Virtualize ( /products/ibm-spectrum-virtualize-reviews ) when I have different hardware ...

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?

It is very cost-effective compared to the traditional environment. With new hardware, it's a long-term investment but...

What needs improvement with Nutanix Unified Storage?

To improve Nutanix Unified Storage (NUS), cost is always an issue for every company, especially when we talk about la...

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Comparisons

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Compared 7% of the time

Scality RING vs Pure Storage FlashBlade

Compared 2% of the time

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Compared 11% of the time

Dell VPLEX vs IBM Spectrum Virtualize

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DataCore SANsymphony vs IBM Spectrum Virtualize

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VMware vSAN vs IBM Spectrum Virtualize

Compared 9% of the time

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Compared 10% of the time

Red Hat Ceph Storage vs Nutanix Unified Storage (NUS)

Compared 9% of the time

Microsoft Storage Spaces Direct vs Nutanix Unified Storage (NUS)

Compared 8% of the time

Amazon S3 vs Nutanix Unified Storage (NUS)

Compared 6% of the time

Qumulo vs Nutanix Unified Storage (NUS)

Compared 4% of the time

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Product Reports

Pure Storage FlashBlade

Download Pure Storage FlashBlade product report

IBM Spectrum Virtualize

Download IBM Spectrum Virtualize product report

Nutanix Unified Storage (NUS)

Download Nutanix Unified Storage (NUS) product report

Also Known As

No data available

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 Virtualize is a dependable solution that improves data value, security, and simplicity for new and existing storage infrastructure. Proven over 12 years in thousands of deployments, its innovative virtualization capabilities help organizations achieve better data economics by supporting new workloads that are critical to their success. IBM Spectrum Virtualize software helps make new and existing storage more effective and standardizes functions traditionally deployed separately in disk systems for greater flexibility and potentially lower costs.

IBM

Nutanix Unified Storage offers seamless scalability and high availability with a user-friendly interface, supporting multi-protocol operations while integrating effortlessly with cloud platforms. It enhances performance and security with features like ransomware protection and advanced data management.

Nutanix Unified Storage streamlines storage management by consolidating infrastructure and optimizing virtualization. It reduces operational complexity and enhances performance across diverse workloads. Despite feedback on integration challenges and suggestions for improving pricing, API capabilities, and security, it remains a key choice for dependable storage solutions. Calls for streamlined implementation and enhanced AI capabilities reflect its potential to better support evolving organizational strategies, driving cost efficiency and data accessibility.

What are the key features of Nutanix Unified Storage?

Intuitive Interface: Simplifies management with easy navigation.
High Availability: Ensures minimal downtime and reliable performance.
Seamless Scalability: Adapts to increasing data requirements effortlessly.
Multi-Protocol Support: Facilitates comprehensive operations across different systems.
Advanced Security: Offers ransomware protection and secure data backup.
Cloud Integration: Allows smooth interaction with cloud platforms.

What benefits and ROI should users evaluate?

Operational Efficiency: Reduced complexity through streamlined management.
Cost Optimization: Achieved via data compression and consolidation.
Enhanced Data Visibility: Improved insights with advanced data lens.
Performance Improvement: Significant uplift in workload handling and database performance.
Scalable Infrastructure: Enables growth and adaptation to changing demands.

In industries, Nutanix Unified Storage is deployed to centralize storage needs, improve database efficiency, and enhance file sharing and security. Organizations use it to consolidate infrastructure, support virtualization, optimize costs, and facilitate virtual machine hosting. It's instrumental in scalable object storage, ransomware protection, integrating legacy systems, and catering to critical applications.

Nutanix

Sample Customers

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

Pelephone, Sprint IT Enterprise Services

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

IBM Spectrum Virtualize vs. Nutanix Unified Storage (NUS)