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IBM Spectrum Scale 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
Average Rating
8.8
Reviews Sentiment
7.9
Number of Reviews
37
Ranking in other categories
All-Flash Storage (17th), File and Object Storage (6th)
IBM Spectrum Scale
Average Rating
8.6
Reviews Sentiment
6.9
Number of Reviews
13
Ranking in other categories
Software Defined Storage (SDS) (7th), Cloud Software Defined Storage (3rd)
Nutanix Unified Storage (NUS)
Average Rating
9.0
Reviews Sentiment
7.5
Number of Reviews
73
Ranking in other categories
All-Flash Storage (6th), Software Defined Storage (SDS) (4th), Public Cloud Storage Services (6th), File and Object Storage (4th), NVMe All-Flash Storage Arrays (4th)
 

Mindshare comparison

As of May 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 Scale is 4.5%, down from 5.7% compared to the previous year. The mindshare of Nutanix Unified Storage (NUS) is 5.3%, up from 2.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Software Defined Storage (SDS)
 

Featured Reviews

Eric Black - PeerSpot reviewer
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.
Bernd Stroehle. - PeerSpot reviewer
Deliver improved performance in data processing and foster extensive AI initiatives
I find IBM Spectrum Scale to be an excellent product known for its fast parallel file system. It achieved the best results when integrated with IBM hardware. Even though it is complex, it provided significant performance advantages in large-scale data management. Its fault tolerance mechanisms and integration capabilities make it popular for extensive AI initiatives and data processing tasks for organizations like Daimler Benz and Bosch.
Juan-Contreras - PeerSpot reviewer
Ensures streamlined management, simplified infrastructure, and efficient data handling
It has effectively managed our unstructured data, including audio and video files. We've experienced smooth operations without any complaints regarding uploading or downloading videos. While video usage isn't as frequent, we primarily utilize it for downloading videos related to specific incidents for administrators or our police department. We've encountered no issues uploading files of any kind. Transitioning from VMware to Nutanix has highlighted the overall flexibility of Nutanix's platform. Unlike VMware's three-tier system, Nutanix simplifies the learning curve by streamlining operations. The update process, in particular, has been favorable, with no critical issues encountered. The resiliency of Nutanix hasn't been thoroughly tested in our environment so far. However, I routinely check fault tolerance settings to ensure they meet our requirements. During the update process, I've observed critical errors occur as hosts restart, but Nutanix's self-healing mechanism handles these issues seamlessly. The benefit of using Nutanix is evident in several ways. Firstly, we've effectively compressed our storage while significantly expanding our overall storage pool. Previously, our service had a capacity of twenty-five terabytes, but with Nutanix, we've scaled up to a hundred and twenty terabytes physically and approximately fifty terabytes logically. This expansion has been accompanied by noticeable improvements in performance, particularly with reduced latency and IOPS well within the boundaries of our equipment. All our resources are centralized in a single location for managing and running storage: our data center. We operate three Nutanix nodes within this center, effectively managing everything from one central location. We don't have any other locations outside of our data center running a Nutanix cluster. Nutanix's capability to eliminate silos within our organization's storage infrastructure was discussed during our recent call with the engineer. Although we haven't explored this feature extensively yet, there's a forthcoming project where we anticipate leveraging it.One thing I'd appreciate is having a desktop application similar to what VMware offered. With VMware, I could download a separate client program onto my computer, allowing me to log in directly rather than accessing the host through a browser.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"The solution is able to handle workloads and is easy to use. It allows us to actually manage the boxes in less time."
"The most valuable features of FlashBlade include its replication capabilities, reports, and easy allocation. Everything is user-friendly."
"It uses the same platform for connectivity so integration is seamless."
"Among its most appealing features are its ease of handling and minimal maintenance requirements."
"The main feature I have found to be product replication."
"The most valuable feature is Safe Mode."
"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 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."
"I rate this product ten out of ten."
"The high performance of the solution is its most valuable aspect. If you compare it to other storage solutions, it's much better."
"GPFS monitoring is the best feature."
"The profile share is a valuable feature."
"We use GPFS Scale for parallel file access, the file management, and it's an essential part of our operations."
"Technical support has been very helpful. They provide us with pretty good solutions that we can implement moving forward."
"I would rate my overall experience with IBM Spectrum Scale as nine out of ten."
"The most valuable feature is the ability to share files across different platforms."
"Whenever we have some necessity in terms of capacity and expansion of infrastructure, it's like a Lego system where they can just place in some more nodes and our needs are met."
"The most valuable feature is that it is highly available, solving the pain-point of delaying updates to Windows-based file servers during production hours. And then the second one would be ransomware protection and analytics. It gives you great visibility and protection on your file shares that are otherwise the most common sources of vulnerabilities."
"The performance has been very good."
"The most valuable features of the solution are high availability and synchronization to another location."
"It is a highly scalable solution."
"The Nutanix block files are the most valuable feature."
"The product is good, easy to upgrade, easy to use, and user-friendly."
"The solution's most valuable features are its support and speed."
 

Cons

"It would be nice if you could store file-based in the same box with the same technology."
"I would like to see better integration."
"An area for improvement in Pure Storage FlashBlade is its price. It could be reduced. The technical support for Pure Storage FlashBlade also needs improvement. It used to be good, with more experienced engineers. Nowadays, it isn't, and it takes longer for support to solve problems."
"There could be improvements in public cloud integration."
"In terms of scalability, it doesn't expand out quite as robustly as some of the others, but it covers 90% of the market in what it does."
"Its configuration should be easier."
"I would like to see more deduplication."
"Recently, while upgrading the version code, one of the controllers failed. Replacing the controller took between 14 to 20 days."
"It would be helpful if there was a graphical user interface that could walk you through the deployment process. The instructions surrounding setup aren't the best. They need to be more step-by-step."
"Making it a little easier to add bad file sets would help. There is a transition to how you add storage and how you add a file set, so making that a little smoother would probably be my recommendation."
"This is probably the biggest challenge, getting everything upgraded, because it just takes time. We wish it was a faster solution to be able to do everything at once, but you have do each node individually. The more nodes, the longer it takes."
"Integration with other vendors is not available."
"The main issue that we have now is with the encryption. They want to use more metrics in encryption, which is not working very well."
"I wish there were some graphical user interface to access the GPFS file system creation and monitoring."
"The initial setup is complex, especially if trying to avoid erasure coding, as it requires more discs. Avoiding erasure coding can significantly increase costs."
"We do have some issues where Spectrum Scale does not work as expected. We have seen our Spectrum Scale servers go down unexpectedly, but because we have a cluster, it does not take out the entire organization."
"While they are good and they do work, some of the snapshotting and tiering features are not as simple to set up as they could be."
"Perhaps Unified Storage could be improved by including artificial intelligence to make searches more effective. Also, if someone has access who shouldn't, it could automatically update, so I do not need to physically remove permission. The platform could do it automatically. AI could make it more self-service."
"The GUI is not user-friendly for new users and has room for improvement."
"We have had to deal with some infrastructure and general cluster issues but these issues don't impact storage."
"Its interface is very simplistic. It is a good thing for people because of the ease of use, but at times, I find it too simplistic. It is hard to find advanced options. They should eventually expand it and provide additional drop-down lists or menus with advanced feature sets."
"The only thing I would say is missing for us it is FTP protocol compatibility."
"Historically, it has been a hyper-converged infrastructure, so when you are looking to grow the solution, you need to scale the compute and storage. Having the ability to scale the storage independently would be a good improvement."
"Perhaps when it comes to deploying NUS virtual machines on top of CVMs, it should not be necessary for it to be in all of them or they should require fewer resources on the servers."
 

Pricing and Cost Advice

"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 price of this solution could be made more affordable."
"Our licensing is renewed annually."
"I feel that the price could always be lowered."
"The pricing is relatively expensive due to the FlashBlade technology. However, for companies needing quick and reliable data access, the cost is justified."
"I understand that it is competitively priced compared to other brands."
"The licensing model is complex and depends on factors such as the number of processing cores and the amount of storage."
"The licensing is based on the number of terabytes."
"The solution is costly but reliable."
"Nutanix's pricing is definitely much better when compared to other storage providers. That was one of the main reasons we switched to this platform."
"Nutanix Unified Storage pricing is reasonable."
"I'm happy with the cost and licensing because I don't have big volumes."
"For clients running Nutanix, the licensing cost for Files is a small add-on cost."
"Compared to other solutions, NUS is cost-effective and efficient. It also has good performance."
"Nutanix Unified Storage was cheaper than other solutions we evaluated."
"From what I hear from the management, Nutanix Unified Storage has comparatively decent pricing."
"The cost of Nutanix Unified Storage can be prohibitive for some small and medium-sized businesses, making it challenging for them to adopt the product."
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Top Industries

By visitors reading reviews
Educational Organization
28%
Computer Software Company
12%
Financial Services Firm
10%
Manufacturing Company
8%
Financial Services Firm
20%
Computer Software Company
14%
Manufacturing Company
14%
Educational Organization
8%
Computer Software Company
33%
Educational Organization
19%
Manufacturing Company
5%
Financial Services Firm
4%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

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?
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 Scale?
IBM Spectrum Scale is very expensive with complex pricing models usually based on the amount of storage used or the n...
What needs improvement with IBM Spectrum Scale?
There is room for improvement in the web interface. There could be more information available, such as charts and gra...
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.
 

Also Known As

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

Overview

 

Sample Customers

ServiceNow, Mercedes-AMG Petronas Motorsport, Dominos, Man AHL
Information Not Available
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 Scale vs. Nutanix Unified Storage (NUS) and other solutions. Updated: April 2025.
850,028 professionals have used our research since 2012.