IBM Spectrum Virtualize vs Nutanix Cloud Infrastructure (NCI) comparison

IBM Spectrum Virtualize vs. Nutanix Cloud Infrastructure (NCI)

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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 June 2025, in the Software Defined Storage (SDS) category, the mindshare of Pure Storage FlashBlade is 4.2%, down from 4.4% compared to the previous year. The mindshare of IBM Spectrum Virtualize is 1.5%, down from 1.6% compared to the previous year. The mindshare of Nutanix Cloud Infrastructure (NCI) is 5.5%, down from 6.9% 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.

Built-in compression enhances data management efficiency

MD.Faisal Alam

Manager, Technical Services, IBM Storage & Backup Solutions. at Thakral

I have noticed that the technical support for software issues, such as with Spectrum Protect, needs improvement. The case logging process is efficient, but resolving software problems takes too much time. This delay can hinder customers and strain vendor relationships. For hardware issues, IBM handles them efficiently, but software-related support requires enhancement. Overall improvement in support for software cases is necessary.

Offers satisfying data protection and workload movement features with exceptional stability

Andrea Beccia

IT Systems Architect at Cividale S.p.A.

Nutanix Cloud Infrastructure can be used up to 100% of its capacity, but our company is presently using 80% of the solution's resources. Our company manufactures iron casting products in the metal industry, and Nutanix Cloud Infrastructure is also used. For virtualization purposes, Nutanix Acropolis is used as a full-stack solution. For the Windows virtual machines in our company's server, Nutanix Acropolis is utilized instead of solutions like VMware Hypervisor. One of the main reasons our company adopted Nutanix Cloud Infrastructure was its data protection features. The solution is also used in disaster recovery through the automatic snapshots feature on the local site. Next year, our organization will try to join clusters in the network using the solution. Network clustering will help our organization's team move workloads into the geographical cluster automatically. Nutanix Cloud Infrastructure is considered an ideal solution for disaster recovery where data protection remains embedded. The solution is capable of even capturing auto snapshots for remote sites. Next year, our company plans to test new features of Nutanix Cloud Infrastructure that will assist in automated workload movements on two sides at a distance of 60 kilometers. I would recommend others use the solution for its exceptional stability, performance, hardware compatibility, and overall flexibility. Nutanix Cloud Infrastructure allows the use of varying hardware for the same cluster. I would rate the solution a nine out of ten overall.

More Pure Storage FlashBlade pros

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 features of this solution are the rewrite speed and the nonstop services."

"Pure Storage FlashBlade is user-friendly. It's replication feature is great because it has active replication and active DR. That's the beauty of the product. It's a perfect solution for block storage."

"We have integrated it with VMware. The integration process is pretty good. Especially with VMware, it helps with the capacity of it."

"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."

"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."

"I would rate this solution an eight plus. It has has good flexibility and stability, it's easy to manage and the response time is good."

"The most valuable features of FlashBlade include its replication capabilities, reports, and easy allocation. Everything is user-friendly."

"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."

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

"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."

"Migration from configurations where servers have storage provisioned from older SAN disk systems to newer storage systems is almost seamless using image mode migration techniques, with only a short outage of the servers."

"There are many benefits to this solution. Storage virtualization and the ability to migrate massive amounts of data to other systems without impacting your client are the most valuable. It is non-disruptive for my users. We migrated 350 terabytes of data in one night to a new machine without a small system going down and a single user complaining about the performance. You have to fine-tune a lot of storage machines constantly for performance and for making sure that they are optimal, but IBM Spectrum Virtualize does this by itself. It does the adjustment on its own, and it does it right. That's what makes it different. I had a huge VSP from Hitachi, which is also a type of virtualization-based engine but with a decent size. It was a continuous performance-tuning exercise. I never had that issue with IBM Spectrum Virtualize."

"In my opinion, the quick restore, the low latency, and the ease of use are some of the most valuable features."

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

"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."

More IBM Spectrum Virtualize pros

"This operating system offers stability. Setup is straightforward."

"What's best about Nutanix Acropolis AOS is its simplicity. It's simple to install and simple to understand. The technical support and support portal for this product are both very good and very helpful."

"Nutanix Acropolis AOS makes it easy to use and manage projects and it has a good reputation."

"The ease of deployment is very good."

"You need to send commands through the command-line interface(CLI). This could be improved. The commands are done better in VMware."

"In the world of IT operations, there is a lot of noise. Traditionally, systems would generate a great deal of alerts, events, and notifications, often leading to the operator either a) not seeing critical alerts since they are lost in the noise or b) disregarding the alerts/events."

"It is all-in-one. The compute processing, storage, and network altogether make it convenient. We don't have to have different modules for expansion."

"It's easy to use and has a very smooth onboarding process."

More Nutanix Cloud Infrastructure (NCI) 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 would like to have Snapshots and Snapmail in the next release. People who came from a NetApp background, especially expect these features."

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

"Its configuration should be easier."

"It's on the expensive side, as expected for a niche product."

"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."

"Commvault has mainly driven the Analytics, providing data and reports. However, the product has room for improvement, especially regarding storage analytics. Upgrading firmware has caused issues, requiring feature disabling to revert to traditional backups. The firmware upgrades sometimes affect Commvault backups."

"The solution is expensive."

More Pure Storage FlashBlade cons

"In general, the migration is complicated. Though, it is case-by-case."

"The only errors I find sometimes is the solution tells me I cannot operate it because a service has turned off, you can just go back to the VM, go to services, and turn back the services. However, this should improve."

"I would like to see them provide a unified platform that offers block, file, and object-based protocol access."

"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."

"I already discussed possible improvements with some of the guys from Hearnsley. One of our frustrations is when you go to expand volumes in a global mirror environment, you have to stop everything in order to expand. So that's one of the things."

"The integration would be an option that we would like, but I understand that's not how it's going to be implemented."

"IBM could improve IBM Spectrum Virtualize by bundling Storage Scale and Storage Virtualize into a single appliance. This would provide a more appealing and cost-effective solution."

"There are things that occur when you get to this size and capacity. We're very large, i.e., petabytes. When you get to that sheer volume of the numbers of things, it is too big for people to keep track of."

More IBM Spectrum Virtualize cons

"Nutanix can be a bit complex to understand."

"They should support more VM, which is not currently supported."

"It is a CentOS-based operating system, but CentOS releases security patches almost every week or every other week. However, Nutanix releases their upgrade at three or four month intervals. According to my organization's SLA, if a critical patch is released during that time, then I need to implement the patches within 30 days. If it is a standard patch, then I need to patch it within 60 days. Since that is my SLA, I cannot meet my SLA for security because Nutanix will not release the upgrade within these 30 days. Between the critical patch release and the Nutanix release, my customers say they are vulnerable and I am accepting the risk while the SLA is breached."

"We could always use a performance upgrade, or simplified management."

"Notifications could be improved as they're not currently very useful."

"The GUI for this solution needs improvement."

"As of now, Acropolis and VMware cannot talk to each other. Until we have some kind of interface, it would be much better for Nutanix if they built an interface which can talk. Otherwise, if I have a VMware stack and I already have a Nutanix stack, I create containers, I create clusters on VMware, I create clusters on Nutanix. All of these clusters cannot talk to each other. Then it has to be then subverted as a parallel execution. What happens then is that I have to work in two different environments within my data center. Practically, they are two different data centers but physically and logically, they are one. If they cannot talk to each other that creates a lot of issues. That is something which Nutanix has to develop because for Nutanix it is very simple. For example, Oracle is using a function called GoldenGate. They have a feature called GoldenGate which allows them to talk to various different environments which must really help."

"We would like to see a cloud version of Acropolis AOS. Currently, we're trying to implement an AWS environment for some solutions, but we would like to use another technology also to enhance our organization, so we are looking for another technology for this, especially a cloud solution."

More Nutanix Cloud Infrastructure (NCI) cons

Pricing and Cost Advice

"Licensing fees are paid yearly."

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

"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."

"We used a reseller for the purchase."

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

"Our licensing is renewed annually."

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

"The product is very expensive."

More Pure Storage FlashBlade pricing and cost advice

"Generally the bundled licensing is more cost effective and gives flexibility to the solution. Linking into the Spectrum Suite can also be advantageous, but depends on the scale of the enterprise."

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

"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."

"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."

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

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

More IBM Spectrum Virtualize pricing and cost advice

"Our Nutanix license is for five years. There is a support arrangement there, but that aspect is more or less taken care of during the initial installation. With HCI architecture, whenever we do any kind of auto scaling or scaling of servers and resources, there is a significant amount of software licensing involved."

"When we purchase a new physical server or a couple of physical servers into our cluster, we always purchase it with Nutanix licensing. We are receiving the license from Nutanix directly and not from the vendor. In the way we're dealing, with the licenses it is a bit costly for us but as the company is getting larger, day by day or year by year, those licensing costs become lower each time for us. We are purchasing the licenses for three years for some of our clusters and for some others for five-year licenses and the licenses are still costly. We have good discounts for the licenses, but it is still expensive."

"We renew our license on a yearly basis and have no costs in addition to the standard fee."

"We just have a support license for Nutanix."

"This product is less expensive than some of the competing HCI solutions."

"Nutanix price is high because it bundles all the components into single deals rather than allowing you to select the features that you want/will use."

"The solution could be a little less expensive."

"Able to grow with smaller, more linear increments of investment"

More Nutanix Cloud Infrastructure (NCI) pricing and cost advice

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Comparison Review

it_user244362

Managing Consultant with 51-200 employees

Aug 30, 2015

Nutanix vs. VMware EVO:RAIL vs. FlexPod

Originally posted at www.storagegaga.com/dont-get-too-drunk-on-hyper-converged/ I hate the fact that I am bursting the big bubble brewing about Hyper Convergence (HC). I urge all to look past the hot air and hype frenzy that are going on, because in the end, the HC platforms have to be aligned…

What do you like most about Pure Storage FlashBlade?

Top Industries

By visitors reading reviews

Educational Organization

16%

Computer Software Company

13%

Financial Services Firm

10%

Manufacturing Company

Computer Software Company

21%

Financial Services Firm

17%

Real Estate/Law Firm

Government

Educational Organization

33%

Computer Software Company

13%

Financial Services Firm

Manufacturing Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

Questions from the Community

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?

The pricing for FlashBlade is between cheap and moderate. FlashBlade is worth the money due to the experience and per...

What needs improvement with Pure Storage FlashBlade?

Its configuration should be easier. There should be easier language for the configuration.

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 is the biggest difference between Nutanix Acropolis and VMware vSphere?

We found the reduced power consumption with Nutanix Acropolis AOS a very attractive feature. We also like the interfa...

How do I choose between Cisco Hyperflex HX Series and Nutanix Acropolis AOS?

Cisco HyperFlex HS series vs Nutanix Acropolis AOS Cisco HyperFlex gives extended hyper-convergence functions from ...

Which would you choose - Nutanix Acropolis AOS or VMware vSAN?

We found the reduced power consumption with Nutanix Acropolis AOS a very attractive feature. We also like the interfa...

Dell PowerScale (Isilon) vs Pure Storage FlashBlade

Comparisons

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VAST Data vs Pure Storage FlashBlade

Compared 10% of the time

Pure Storage FlashArray vs Pure Storage FlashBlade

Compared 10% of the time

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Compared 25% of the time

VxRail vs IBM Spectrum Virtualize

Compared 25% of the time

VMware vSAN vs IBM Spectrum Virtualize

Compared 19% of the time

IBM Spectrum Scale vs IBM Spectrum Virtualize

Compared 17% of the time

Red Hat Ceph Storage vs IBM Spectrum Virtualize

Compared 14% of the time

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Compared 8% of the time

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Compared 6% of the time

HPE SimpliVity vs Nutanix Cloud Infrastructure (NCI)

Compared 5% of the time

Sangfor HCI - Hyper Converged Infrastructure vs Nutanix Cloud Infrastructure (NCI)

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VMware vSphere vs Nutanix Cloud Infrastructure (NCI)

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Product Reports

Pure Storage FlashBlade

Download Pure Storage FlashBlade product report

Download IBM Spectrum Virtualize product report

IBM Spectrum Virtualize

June 2025

Nutanix Cloud Infrastructure (NCI)

Download Nutanix Cloud Infrastructure (NCI) product report

Nutanix Cloud Infrastructure (NCI) report

Also Known As

No data available

Nutanix Acropolis AOS, Nutanix AOS, Nutanix Acropolis

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 Cloud Infrastructure (NCI) is a top-ranking HCI software, cloud management tool, and Software Defined Storage (SDS) tool that is marketed as the foundation for users' hybrid clouds. It offers a powerful and secure hyperconverged infrastructure to deliver all data and applications at any scale and on any cloud. The solution offers a complete software stack that allows users to unify their hybrid cloud infrastructure.

NCI’s services include computer, storage and network, hypervisors and containers, and deployment in public or in private clouds. The product also comes with built-in resilience, disaster recovery capabilities, self-healing, and high-security capacities. It provides further deployment flexibility through several software and hardware options and platforms. NCI includes a full set of enterprise capabilities. It can also be deployed on a wide range of servers from popular manufacturers.

The capabilities of the product are categorized into three main groups:

AOS storage
Flexible and open compute
Automated and secure networking

Outside of these categories, NCI also offers other capabilities:

Integrated disaster recovery
Full-stack lifecycle management
VMware with Nutanix
Intelligent operations

Nutanix Cloud Infrastructure (NCI) Features

Nutanix Cloud Infrastructure (NCI) offers its customers various features and tools in each of the previously mentioned categories. The available features for users currently include:

High-performance: This set of features utilizes hardware advances such as NVMe and RDMA to accelerate users' most demanding applications with consistent performance. The tools in this feature category work alongside data locality to ensure successful results.
Foolproof resiliency: These Nutanix Cloud Infrastructure features protect data and keep it available by facilitating advanced distributed consistency algorithms. Users can utilize these features to protect their data from issues like bit rot, hardware failures, and even entire site failure.
Flexibility: This set of features allows storage to be sized for the needs of each organization and expanded promptly and easily so that the organization and its data can grow. The features offer flexibility to users in terms of applying storage policies logically on a pre-workload basis, instead of being tied to hardware.
Hypervisor choice: Users can choose from the leading hypervisors - Microsoft Hyper-V or VMware ESXi. They can also leverage the built-in hypervisor AHV that Nutanix Cloud Infrastructure (NCI) provides.
Integrated virtualization: These features offer simplified automation and AHV streamlined operations. The services in this category are optimized for high performance and reliability.
Kubernetes: Nutanix Cloud Infrastructure (NCI) offers features to build and deploy cloud-native applications on intelligent distributed infrastructure. Apps can be integrated with cloud-compatible storage and both building and deployment can be achieved within the same platform.
Microsegmentation: Nutanix Cloud Infrastructure (NCI) offers features to prevent malware spread and reduce attack surfaces by leveraging machine learning (ML).
Virtual networking: This set of features allows users to easily implement multi-tenancy in their environment or stretch networks across clouds.
Centralized network management: Nutanix Cloud Infrastructure (NCI) provides organizations with a way to manage networking configurations centrally. Users can utilize it across their human-computer interaction (HCI) environment with simple virtual switch management.

Nutanix Cloud Infrastructure (NCI) Benefits

The product offers various benefits to users who utilize its capacities. Some of these include:

NCI reduces technology sprawl and frees up technical resources to allow organizations to focus on other activities, potentially reducing costs for the business.
The product allows customers to deploy, scale, and bridge to the public cloud to be able to react in evolving business environments.
Nutanix Cloud Infrastructure improves data availability while simultaneously protecting it against several kinds of failures and attacks.
The solution offers high-performance, resilient distributed storage for all workloads.
Working alongside Nutanix Cloud Platform, NCI offers simple management of data from one console.
Nutanix Cloud Infrastructure works by the zero trust philosophy, protecting users' apps and data through specially designed security protocols.

Reviews from Real Users

According to Gerhard J., an IT manager at Q4 Fuel, Nutanix Cloud Infrastructure (NCI) provides serious reliability and stability across the entire system makes for ROI.

A solutions architect at a computer software company describes NCI as a stable, straightforward to set up, and scalable solution.

Nutanix

Sample Customers

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

Pelephone, Sprint IT Enterprise Services

St. Lukes Health System, the City of Seattle, Yahoo! Japan, Sligro, Empire Life, Hyundai AUS, and many others.

IBM Spectrum Virtualize vs. Nutanix Cloud Infrastructure (NCI)