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IBM Spectrum Accelerate vs Nutanix Unified Storage (NUS) comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Dec 5, 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

Pure Storage FlashBlade
Sponsored
Ranking in Software Defined Storage (SDS)
8th
Average Rating
8.8
Reviews Sentiment
7.5
Number of Reviews
39
Ranking in other categories
All-Flash Storage (12th), File and Object Storage (8th)
IBM Spectrum Accelerate
Ranking in Software Defined Storage (SDS)
23rd
Average Rating
8.0
Reviews Sentiment
6.9
Number of Reviews
2
Ranking in other categories
Cloud Software Defined Storage (4th)
Nutanix Unified Storage (NUS)
Ranking in Software Defined Storage (SDS)
2nd
Average Rating
8.8
Reviews Sentiment
7.2
Number of Reviews
114
Ranking in other categories
All-Flash Storage (6th), Public Cloud Storage Services (5th), File and Object Storage (3rd), NVMe All-Flash Storage Arrays (4th)
 

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 Accelerate is 2.2%, up from 1.3% 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
ProductMarket Share (%)
Nutanix Unified Storage (NUS)4.1%
Pure Storage FlashBlade3.3%
IBM Spectrum Accelerate2.2%
Other90.4%
Software Defined Storage (SDS)
 

Featured Reviews

MikaelHellström - PeerSpot reviewer
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.
reviewer1154616 - PeerSpot reviewer
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.
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

"It is very easy to use, and it is very fast."
"I like its size. It is smaller than the other competitors. We can plug in many blades, and we can have data up to one terabyte."
"The initial setup is pretty quick."
"The solution provides many controllers."
"The product is scalable and easy to expand."
"It's very easy-to-use."
"It has also helped to simplify storage for us in the way that it's easy to manage. Their automatic monitoring really helps when things break or are about to break. They see a problem coming and alert us even before our own system does."
"It uses the same platform for connectivity so integration is seamless."
"The ease of use is the solution's most valuable aspect. It's very user-friendly."
"The most valuable feature is the robustness, which is typical of IBM because their software generally just works."
"The features I appreciate the most about Nutanix Unified Storage (NUS) are the compatibility with the market."
"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."
"The integration with Prism Central makes it a lot easier to manage, so we just have a single pane of glass location that we can go to. We do not have a separate admin console or anything that we have to use."
"We have been able to save local disk space by using Data Lens. We upload 18 GB to the cloud and are able to save 20% to 25%."
"My experience with using Nutanix Unified Storage (NUS) for data-intensive workloads is that we have many SQL Servers and they perform much better than they did when we used hybrid converged previously."
"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."
"The customer service executives of all Nutanix products are active and responsive."
"Nutanix Unified Storage (NUS) is very scalable."
 

Cons

"There is some room for new features related to authentication and integration with Kubernetes, and other solution using S3 Bucket."
"They need better integration with public clouds along with a better hybrid solution."
"The documentational aspect of FlashBlade needs improvement."
"We haven't been able to use much of the cloud area of Pure Storage. We have a storage server and it would be better if it could integrate with other cloud features of this solution."
"The solution is expensive."
"File storage needs a lot of improvement. Mainframe connectivity also needs improvement because it requires additional components to be integrated with Pure Storage FlashBlade. If you want to keep your backup data, then this becomes an even more expensive solution because Pure Storage FlashBlade will not be able to meet your backup needs."
"Pure Storage FlashBlade should improve on more cloud integration."
"It would be nice if you could store file-based in the same box with the same technology."
"The reporting mechanisms need improvement."
"he interface is not user-friendly so the ease of use could be improved."
"We have some problems with Nutanix Unified Storage's support because they asked us to change our hardware."
"I believe that one of the most complicated parts of Nutanix Unified Storage is the configuration of the DNS issue in Active Directory. Sometimes it is a bit complicated to troubleshoot or detect an error when integrating it with Active Directory."
"It is challenging to configure access control settings."
"The training programs could be improved. It's quite challenging to find adequate learning resources online, as there isn’t much available on the internet or YouTube."
"There should be more information. If it gets used more by more people, they will have a bigger community to share ideas. It is still kind of newer. It is not as big as Dell and other companies."
"From the speed perspective of Nutanix Unified Storage (NUS), it could enhance some features to make it the best storage solution in the market."
"Nutanix Unified Storage (NUS) needs improvement in compatibility with Windows solutions."
"Another aspect that needs improvement is continuous protection against security threats such as ransomware and potential data leakage."
 

Pricing and Cost Advice

"I feel that the price could always be lowered."
"Licensing fees are paid yearly."
"The price of this solution could be made more affordable."
"I rate the tool's pricing a seven to eight out of ten."
"I understand that it is competitively priced compared to other brands."
"It's a costly solution, but Pure Storage FlashBlade doesn't require additional licenses. All of the software is combined into one bundle."
"The pricing is relatively expensive due to the FlashBlade technology. However, for companies needing quick and reliable data access, the cost is justified."
"Our customers have seen a reduction in TCO."
"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 you are cost-sensitive then this solution is not for you."
"From what I hear from the management, Nutanix Unified Storage has comparatively decent pricing."
"The price of the license is expensive when comparing it to traditional storage."
"Nutanix is very competitive."
"While the price may not be the most affordable, I believe it offers good value for the benefits it provides."
"In my opinion, the product is fairly priced."
"The pricing is a bit too high."
"I assume Nutanix Unified Storage (NUS) has helped reduce our total cost of ownership."
"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."
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Top Industries

By visitors reading reviews
Financial Services Firm
12%
Computer Software Company
10%
Manufacturing Company
10%
Government
7%
No data available
Computer Software Company
24%
Manufacturing Company
12%
Educational Organization
5%
University
5%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business11
Midsize Enterprise11
Large Enterprise21
No data available
By reviewers
Company SizeCount
Small Business27
Midsize Enterprise30
Large Enterprise63
 

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...
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Earn 20 points
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...
 

Also Known As

No data available
IBM XIV
Nutanix Files Storage, Nutanix Volumes Block Storage, Nutanix Objects Storage
 

Overview

 

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
Find out what your peers are saying about IBM Spectrum Accelerate vs. Nutanix Unified Storage (NUS) and other solutions. Updated: December 2025.
879,422 professionals have used our research since 2012.