IBM Spectrum Scale vs Microsoft Storage Spaces Direct comparison

IBM Spectrum Scale vs. Microsoft Storage Spaces Direct

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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 July 2025, in the Software Defined Storage (SDS) category, the mindshare of Pure Storage FlashBlade is 4.2%, down from 4.5% compared to the previous year. The mindshare of IBM Spectrum Scale is 4.7%, down from 5.2% compared to the previous year. The mindshare of Microsoft Storage Spaces Direct is 7.6%, up from 7.4% 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.

Read full review

Bernd Stroehle.

Enterprise Architect at kosakya

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.

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Stanislaw Mielicki

Solution architect at Netland

Achieve cost-effectiveness with superior performance while needing to address cluster support

I am working with Microsoft Storage Spaces Direct for applications, SQL, and VRS. I am an integrator for this solution The price performance is the best advantage of Microsoft Storage Spaces Direct. They introduced the All-Flash array using SSD or NVMe drives without cache drives. It is…

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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 feature is Safe Mode."

"The initial setup was straightforward. If you know how to plug in power and network you're pretty much qualified. They were on site to configure the network, the box to fit into our network architecture. Other than that, we self-managed from there."

"The onboarding and integrated monitoring tools are pretty good."

"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."

"The most valuable feature of this solution is performance."

"The main feature I have found to be product replication."

"The most valuable features include the ease of implementation, ease of use and the speed that you can do backup and recovery on."

"The initial setup is pretty quick."

More Pure Storage FlashBlade pros

"Allows us to share files across multiple environments."

"The high performance of the solution is its most valuable aspect. If you compare it to other storage solutions, it's much better."

"I would rate my overall experience with IBM Spectrum Scale as nine out of ten."

"Its great servicing high availability. That is what it is used for."

"It is a scalable solution."

"We are using it for monitoring all of our storage."

"The most valuable feature is the ability to share files across different platforms."

"I rate this product ten out of ten."

More IBM Spectrum Scale pros

"The price performance is the best advantage of Microsoft Storage Spaces Direct."

"The most valuable feature is that there is no single point of failure."

"The performance, reliability, and affordability has been most valuable."

"The price performance is the best advantage of Microsoft Storage Spaces Direct."

"The main positive impact that Microsoft Storage Spaces Direct has had on my company over the years is increasing performance; our checks show it is three times faster than VMware, making us extremely happy and motivated to keep using it."

"The initial setup is straightforward."

"It's mainly about the storage expansion, like in hyper-converged solutions."

"The most valuable feature are the caching capabilities using the storage class memory."

More Microsoft Storage Spaces Direct pros

Cons

"In terms of technical support, the experience has been mixed. The support is done through email and is not that great, making it a very problematic area I've been dealing with for over four years."

"I want efficiency. FlashBlade doesn't have efficiency now."

"I would like to see more monitoring capability included in the next release of this solution."

"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."

"It would be beneficial if the layer could support the S3 protocol and be container ready in the next release."

"Its configuration should be easier."

"I would like to see more VM-Aware features in the next release of this solution."

"To improve FlashBlade, some analysts suggest enhancing its handling of relational database management systems and SQL queries."

More Pure Storage FlashBlade cons

"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."

"The biggest problem is that it is not able to provide block storage."

"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."

"The pricing and licensing model for this solution are complex and it is sometimes difficult to explain it to customers."

"I believe there is no graphic user interface, so they should include it."

"There can be improvements in fault tolerance and making erasure coding faster."

"I wish there were some graphical user interface to access the GPFS file system creation and monitoring."

"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."

More IBM Spectrum Scale cons

"It is scalable, but only beyond two nodes. If I go for two nodes it's not scalable. I need to build a complete cluster from the beginning if I'm going for two nodes."

"The integration is not difficult because there is no GUI, but we need to use a PowerShell command. This makes it difficult to monitor and to see the components' statuses."

"More optimization could be done in terms of mirroring."

"The management tool within this solution could be improved. We would also like to be able to access services like Azure when using this solution."

"Documentation management could be improved"

"On a scale of one to ten, I would rate the customer service and technical support of Microsoft Storage Spaces Direct a three, as there were issues that the Microsoft team could not pinpoint, leading to delays in finding solutions."

"It is difficult to get a hardware compatibility certification for the solution."

"Microsoft closed the shared cluster support, which is important for the solution."

More Microsoft Storage Spaces Direct cons

Pricing and Cost Advice

"Our customers have seen a reduction in TCO."

"It's a costly solution, but Pure Storage FlashBlade doesn't require additional licenses. All of the software is combined into one bundle."

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

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

"The price of this solution could be made more affordable."

"Our licensing is renewed annually."

"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."

More Pure Storage FlashBlade pricing and cost advice

"The solution is costly but reliable."

"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."

"With the data center licensing and everything that is connected to that, this solution is relatively costly."

"Cost-wise the product is one of the more affordable within the category of products."

"The solution is expensive."

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860,592 professionals have used our research since 2012.

Top Industries

By visitors reading reviews

Computer Software Company

14%

Educational Organization

12%

Financial Services Firm

11%

Manufacturing Company

Financial Services Firm

19%

Computer Software Company

13%

Manufacturing Company

13%

Educational Organization

Computer Software Company

15%

Manufacturing Company

10%

Government

Financial Services Firm

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 do you like most about IBM Spectrum Scale?

It is a scalable solution.

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...

How does VMware vSAN compare with Microsoft Storage Spaces Direct?

We found VMware’s vSAN was easy to set up, configure, and manage compared to other solutions we considered. It is bes...

What is your experience regarding pricing and costs for Microsoft Storage Spaces Direct?

Pricing is an advantage of Storage Spaces Direct. Licenses can be on a monthly or yearly basis, depending on the addi...

What needs improvement with Microsoft Storage Spaces Direct?

Microsoft closed the shared cluster support, which is important for the solution. At the moment, the new version does...

Dell PowerScale (Isilon) vs Pure Storage FlashBlade

Comparisons

Compared 20% of the time

Red Hat Ceph Storage vs Pure Storage FlashBlade

Compared 11% of the time

MinIO vs Pure Storage FlashBlade

Compared 11% of the time

VAST Data vs Pure Storage FlashBlade

Compared 10% of the time

Pure Storage FlashArray vs Pure Storage FlashBlade

Compared 9% of the time

More Pure Storage FlashBlade Competitors

Red Hat Ceph Storage vs IBM Spectrum Scale

Compared 27% of the time

DDN IME vs IBM Spectrum Scale

Compared 14% of the time

Portworx Enterprise vs IBM Spectrum Scale

Compared 12% of the time

Red Hat Gluster Storage vs IBM Spectrum Scale

Compared 8% of the time

VMware vSAN vs IBM Spectrum Scale

Compared 7% of the time

More IBM Spectrum Scale Competitors

VMware vSAN vs Microsoft Storage Spaces Direct

Compared 62% of the time

Red Hat Ceph Storage vs Microsoft Storage Spaces Direct

Compared 15% of the time

StarWind Virtual SAN vs Microsoft Storage Spaces Direct

Compared 7% of the time

Nutanix Unified Storage (NUS) vs Microsoft Storage Spaces Direct

Compared 6% of the time

DataCore SANsymphony vs Microsoft Storage Spaces Direct

Compared 4% of the time

More Microsoft Storage Spaces Direct Competitors

Product Reports

Pure Storage FlashBlade

Download Pure Storage FlashBlade product report

IBM Spectrum Scale

Download IBM Spectrum Scale product report

Microsoft Storage Spaces Direct

Download Microsoft Storage Spaces Direct product report

Also Known As

No data available

MS Storage Spaces Direct

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 Scale is a cluster file system that provides concurrent access to a single file system or set of file systems from multiple nodes. The nodes can be SAN attached, network attached, a mixture of SAN attached and network attached, or in a shared nothing cluster configuration. This enables access to this common set of data to support a scale-out solution or to provide a high availability platform. IBM Spectrum Scale has many features beyond common data access including data replication, policy based storage management, and multi-site operations. You can create a cluster of AIX nodes, Linux nodes, Windows server nodes, or a mix of all three. IBM Spectrum Scale can run on virtualized instances providing common data access in environments, leverage logical partitioning, or other hypervisors. Multiple IBM Spectrum Scale clusters can share data within a location or across wide area network (WAN) connections.

IBM

Storage Spaces Direct uses industry-standard servers with local-attached drives to create highly available, highly scalable software-defined storage at a fraction of the cost of traditional SAN or NAS arrays. Its converged or hyper-converged architecture radically simplifies procurement and deployment, while features like caching, storage tiers, and erasure coding, together with the latest hardware innovation like RDMA networking and NVMe drives, deliver unrivaled efficiency and performance.

Microsoft

Sample Customers

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

Information Not Available

Acuutech, Quest Technology Management, Bradley, Mead & Hunt

IBM Spectrum Scale vs. Microsoft Storage Spaces Direct