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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

Everpure FlashArray
Sponsored
Average Rating
9.0
Reviews Sentiment
7.2
Number of Reviews
231
Ranking in other categories
All-Flash Storage (3rd)
IBM Spectrum Accelerate
Average Rating
8.0
Reviews Sentiment
6.9
Number of Reviews
2
Ranking in other categories
Software Defined Storage (SDS) (22nd), Cloud Software Defined Storage (4th)
Nutanix Unified Storage (NUS)
Average Rating
8.8
Reviews Sentiment
7.2
Number of Reviews
121
Ranking in other categories
All-Flash Storage (7th), Software Defined Storage (SDS) (2nd), Public Cloud Storage Services (3rd), File and Object Storage (3rd), NVMe All-Flash Storage Arrays (4th)
 

Featured Reviews

Sowjanya MV - PeerSpot reviewer
Technical Lead at Wipro Limited
Has improved performance for mission-critical workloads and enabled seamless non-disruptive upgrades
The availability is 99.99%, which is the main factor any customer would need because their data should be available whenever they want to access it. This is one main critical thing. It is very easy to upgrade since Pure Storage FlashArray handles it well. Everything is non-disruptive now; previously, there were forklift shifts, but now that is not the case. Pure Storage FlashArray says no to forklift upgrades. Usually hardware requires downtime, but Pure Storage FlashArray has improved their footprint so that they are not asking for downtime; everything is just a non-disruptive activity, which is why customers are more inclined towards Pure Storage FlashArray. Customers want more of the models in their environment due to the performance they are giving, and everything is in one Pure1 Array console where we can view all the models on one page or just an orchestration tool. You don't miss anything; you have replication, notifications about replication, and details about which host groups replication is happening in and if that replication is successful or failed. On a daily basis, our purpose is to create volumes for infrastructure; our daily activities include creating volumes and mapping them to the host, doing any migrations from a VM, clearing the data stores, and carving the volumes to those VMs. One key factor is the data compression with a ratio of 5:1, focusing on space efficiency, inline deduplication, and the compression Pure Storage FlashArray works on; that is a major factor we can suggest to any customer. Analytical capabilities are crucial. Daily, we check the throughput and consumption, and Pure Storage FlashArray provides predictions for one year regarding usage. This prediction helps plan updates well ahead. For support, we just raise a case, and they follow up and get it done. There is also AI readiness, but with the model R2, we don't have much of that AI readiness. For others, we do have AI readiness that predicts capacity based on daily or monthly trends, enabling us to analyze how much space we need or if we need to expand the disk shelf. From an operational point of view, a good feature is that if you accidentally delete a volume, it will be retained in the destroyed state for the next twenty-four hours, which is not the same with any other vendor. I have worked in this storage domain for the past fifteen years, and this option is remarkable, benefiting any L1 or L2 engineer. Additionally, from a compliance perspective, Pure Storage FlashArray has REST APIs enabled. I have not explored automation much, but from a security standpoint, it is strong with encryption data. If you want to automate, you can easily integrate with all clouds and explore Pure Cloud for scheduling workloads, including volume creation. Customers find benefit in Pure Storage FlashArray's single management pane of glass due to the dual controller and active-active setup. If one of the controllers goes down, all workloads automatically shift to the other controller, ensuring their data is safe and accessible at all times. This is a highlighted feature that any customer desires because their data should always be accessible. For SAN workloads, we use Pure Storage FlashArray because for SAN FC fiber channel, we don't use it; we use NetApp for NAS activities. We have clearly split this, so SAN is for mission-critical applications, while network-attached storage handles file systems. This architecture helps us maximize the benefit from Pure Storage FlashArray due to the significant workloads from this giant retail client. From a footprint and energy consumption perspective, you can see energy consumption from the Pure1 storage portal on a daily basis, and it is very compact. The three models we use consume only three units, which is quite low. From a footprint and data center perspective, it doesn't occupy much space. As everything moves to cloud, there are requirements to avoid excess spending on data centers, and Pure Storage FlashArray is efficient in energy consumption and is environmentally friendly.
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 pretty much just plug and play. There is not that much to do with it. It is very easy to use."
"Non-disruptive upgrades: You can upgrade at anytime without worry."
"We have looked at all of the platforms, and to see what Pure was able to do within a PoC environment meant that we never turned back our PoC environment."
"We experience fast demos and zero downtime; we do not experience any downtime with Pure Storage, thanks to resilience with Safe Mode, integration with backup software, and everything related to cyber resilience."
"Lone segmentation is simpler and more agile. It's improved the velocity in overall provisioning from project to operation."
"Pure Storage FlashArray is simple and easy to use. It offers protection when removing devices. It has the ability to undo deletes."
"I like its speed. It has all the features that I need."
"The experience has been very good so far for the company."
"The ease of use is the solution's most valuable aspect; it's very user-friendly, and the security on the product is very good."
"The most valuable feature is the robustness, which is typical of IBM because their software generally just works."
"Implementing this solution has been a very good decision for our in-house data center."
"The reliability and availability are the most valuable features. Reliability is important because it can run my workloads. I need to be able to take advantage of the VMs that are executing on the storage. It has to be reliable. It's also important to have the storage available for scaling VMs on demand."
"In the beginning, when they sold us Nutanix Unified Storage (NUS), they told us the performance would be 30%. Then we came to them and said, 'You are a liar. It's not 30%, it's 800% increase.'"
"The interface is quite simple. It is very good. It is easy to configure. It also has a powerful CLI."
"It scales well. I started with two or three servers, and I have added almost 20."
"Regarding downtime issues, we haven't had downtime in generations, and everything is going very well."
"Overall, this is a good product and I recommend it."
"The product's initial setup phase was simple."
"My opinion is that this solution has very good stability."
 

Cons

"When we were doing some tests, we found that there was an I/O freeze when they were switching the controller."
"This product has only two active controllers, whereas other solutions can have more. This is something that needs to improve."
"Pure Storage can improve FlashArray by providing more logging visibility to customers. Currently, there is no log visibility."
"I have been primarily working with storage and have not fully explored other areas, but there is some room for improvement when it comes to performance reporting."
"The problem is that we can only make a few groups, around five or six groups. I like groups and we need a lot of them. We had to put all the information in only a few groups and cannot make a more detailed separation of them."
"I would like to see data tiering to AWS."
"I recognize it's a difficult challenge, but I would like to see them make the pricing more reasonable."
"Data reduction is an area that needs improvement. There is a garbage collection service that runs but during that time, system utilization increases."
"The interface is not user-friendly so the ease of use could be improved."
"The reporting mechanisms need improvement."
"The initial setup is a little bit complex."
"When considering the difference in cost benefits, if you consider it only as a storage solution, you may find it expensive."
"The CVM consumes more memory and CPU, as it will be allocated a minimum of 32 GB. For a large data store, they are unnecessarily consuming extra resources through the built-in CVM."
"From a management side, the one thing I would prefer is if it were a bit less expensive for smaller enterprises. It's a bit costly. If they provided flexible modules where you could pick and choose features, and only pay for what you use, that would be an improvement."
"There are some techniques that need to be improved because sometimes, during processes, it gets stuck on the console, requiring command line interventions, indicating gaps between the GUI and command lines."
"The solution should include more protocols to access data."
"From a cost perspective, while I think licensing can be complex when scaling up to a large environment, I do not see any other significant issues with Nutanix Unified Storage (NUS)."
"There is some confusion in the reporting when I have to create the report for statistics. I find it is not so user-friendly."
 

Pricing and Cost Advice

"Pricing is moderate. It is neither cheap nor expensive."
"Cost-wise, I imagine that the product's price would probably give you a nosebleed if you were a younger company."
"Price per terabyte is substantially higher than their competition. We would like to see it drop."
"When you are paying more than you were paying for the storage space, you'd like the cost to be less. If they could get into the spinning disk kind of cost, that would be it."
"There is always room for negotiation."
"The pricing of Pure Storage is all-inclusive. It is very fair, and very easy. In comparison, Dell EMC has licensing that needs to be added if you wan to work in a complex environment or in specific functionalities."
"We have seen a reduction in total cost of ownership."
"We have seen a reduction in TCO."
"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 product has an annual licensing fee."
"Nutanix offers different pricing options, including Ultimate and Ultimate Pro."
"It is competitive with other vendors, but you get more for your dollars. It is fairly priced, but not cheap."
"While the price may not be the most affordable, I believe it offers good value for the benefits it provides."
"It is very good. It is much more competitive than a dedicated storage platform."
"The price can always be improved. As a customer, you always seek reasonable solutions within your budget, and they give us little to do a lot. My IT team always has to justify that we are choosing an optimal solution, so the price could be a little lower Maybe the prices could be a little bit lower."
"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."
"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."
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Top Industries

By visitors reading reviews
Manufacturing Company
14%
Financial Services Firm
12%
Construction Company
10%
Computer Software Company
7%
No data available
Computer Software Company
12%
Manufacturing Company
12%
Financial Services Firm
9%
Comms Service Provider
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business71
Midsize Enterprise38
Large Enterprise159
No data available
By reviewers
Company SizeCount
Small Business32
Midsize Enterprise31
Large Enterprise69
 

Questions from the Community

Which should I choose: HPE 3PAR StoreServ or Hitachi Virtual Storage Platform F Series?
Both are great platforms, but if you are considering all flash solutions, I would recommend you to consider Pure Stor...
What is your experience regarding pricing and costs for Pure Storage FlashArray?
I have knowledge about the licensing part, which we obtained for around 10 years from the time of deployment, but I d...
What needs improvement with Pure Storage FlashArray?
When it comes to Everpure FlashArray ports shown in the GUI, it would be better if, when one of the Pure array ports ...
Ask a question
Earn 20 points
What is your experience regarding pricing and costs for Nutanix Unified Storage?
The pricing for Nutanix Unified Storage (NUS) is subscription-based with capacity-based licensing and has moderate to...
What needs improvement with Nutanix Unified Storage?
One area for improvement I noticed while using Nutanix Unified Storage (NUS) is expanding advanced analytics and pred...
What advice do you have for others considering Nutanix Unified Storage?
My advice for others looking into using Nutanix Unified Storage (NUS) is to clearly understand your storage requireme...
 

Also Known As

Pure Storage FlashArray
IBM XIV
Nutanix Files Storage, Nutanix Volumes Block Storage, Nutanix Objects Storage
 

Overview

 

Sample Customers

Nielsen, Lamar Advertising, LinkedIn, Betfair, UT-Dallas
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: June 2026.
900,644 professionals have used our research since 2012.