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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)
9th
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 (7th), Public Cloud Storage Services (4th), File and Object Storage (3rd), NVMe All-Flash Storage Arrays (4th)
 

Mindshare comparison

As of February 2026, in the Software Defined Storage (SDS) category, the mindshare of Pure Storage FlashBlade is 3.4%, down from 4.4% compared to the previous year. The mindshare of IBM Spectrum Accelerate is 2.2%, up from 1.4% compared to the previous year. The mindshare of Nutanix Unified Storage (NUS) is 4.8%, up 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)4.8%
Pure Storage FlashBlade3.4%
IBM Spectrum Accelerate2.2%
Other89.6%
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

"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 product is scalable and easy to expand."
"We have seen a reduction in the total cost of ownership by around 20%."
"The most valuable feature of this solution is performance."
"The onboarding and integrated monitoring tools are pretty good."
"FlashBlade offers low latency, high throughput, and seamless scalability."
"I would rate Pure Storage FlashBlade a ten out of ten."
"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 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."
"What I appreciate most about Nutanix Unified Storage (NUS) is the efficiency in terms of storage capacity and reuse."
"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."
"I rate Nutanix Unified Storage (NUS) nine point five to ten, as it's easy to manage, scalable, has great performance, and includes advanced features."
"Since migrating to Nutanix, we have not lost any data despite node failures due to its high availability and redundancy factor."
"The product is good, easy to upgrade, easy to use, and user-friendly."
"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 deployment was very easy."
"The biggest return on investment for me when using Nutanix Unified Storage (NUS) is the management aspect since it's easier to manage."
 

Cons

"There is some room for new features related to authentication and integration with Kubernetes, and other solution using S3 Bucket."
"It would be nice if you could store file-based in the same box with the same technology."
"I would like to see more monitoring capability included in the next release of this solution."
"We initially encountered challenges with the assembly process due to issues with the documentation required during setup, an area where Pure Storage needs improvement."
"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."
"Its configuration should be easier."
"They need better integration with public clouds along with a better hybrid solution."
"To improve FlashBlade, some analysts suggest enhancing its handling of relational database management systems and SQL queries."
"The reporting mechanisms need improvement."
"he interface is not user-friendly so the ease of use could be improved."
"Improving quota policies would be advantageous, particularly by offering the option to implement blocking instead of just issuing warnings."
"Allowing the use of the Gflag compromises the integrity of the Nutanix system and its established standards."
"The current hardware is not as dense as it could be. In our deployment, we have 2 PB per site, and we have to have 24 nodes. That's a lot of cabling and network ports that we use up. More dense nodes would be better."
"From the speed perspective of Nutanix Unified Storage (NUS), it could enhance some features to make it the best storage solution in the market."
"The integration feature with Nutanix Unified Storage (NUS) could be improved, maybe into a more stabilized version."
"For P1 and P2 alerts in the Nutanix Unified Storage (NUS) file share system, including SMB, NFS, objects, or blocks, we must maintain vigilant monitoring. This is crucial because system downtime can disturb the entire ecosystem and impact all applications."
"Nutanix Unified Storage (NUS) needs improvement in compatibility with Windows solutions."
"One thing I'd appreciate is having a desktop application similar to what VMware offered."
 

Pricing and Cost Advice

"I understand that it is competitively priced compared to other brands."
"The price could be cheaper."
"I rate the tool's pricing a seven to eight out of ten."
"We used a reseller for the purchase."
"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."
"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."
"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."
"The licensing currently works based on a software license. If we have files, volumes, and other licenses combined, that would be more valuable. I don't want to go for a separate license for files and a separate license for volumes. We have unified storage, so the licensing should also be unified. That would be helpful."
"Nutanix Unified Storage was cheaper than other solutions we evaluated."
"I am not the one who makes the calls, but it seems to me that it was very competitive. Other solutions would have required dedicated hardware, so an additional CapEx has to be put in place. In that sense, it was definitely a more competitive option to go with Nutanix Files."
"The solution's pricing is better compared to other products."
"Nutanix is priced a bit higher than some of its competitors. A lot of Chinese companies like Huawei are entering the Saudi Arabian market trying to provide similar solutions for a lower price. It offers a good value, especially the support. Nutanix has a highly competent team. The after-sales support is excellent."
"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."
"Nutanix Unified Storage is competitively priced. There aren't any competitors that can do much better for the same price."
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Top Industries

By visitors reading reviews
Financial Services Firm
12%
Manufacturing Company
10%
Computer Software Company
10%
Government
7%
No data available
Computer Software Company
19%
Manufacturing Company
12%
Educational Organization
5%
Financial Services Firm
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 Business26
Midsize Enterprise30
Large Enterprise66
 

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...
Ask a question
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: February 2026.
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