Kaminario K2 [EOL] vs Lenovo ThinkSystem DM Series comparison

Silk and Lenovo are both solutions in the All-Flash Storage category. Additionally, 94% of Silk users are willing to recommend the solution, compared to 60% of Lenovo users who would recommend it.

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Executive Summary

We performed a comparison between Kaminario K2 [EOL] and Lenovo ThinkSystem DM Series based on real PeerSpot user reviews.

Find out what your peers are saying about Dell Technologies, Hewlett Packard Enterprise, NetApp and others in All-Flash Storage.

To learn more, read our detailed All-Flash Storage Report (Updated: January 2026).

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All-Flash Storage

January 2026

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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 FlashArray X NVMe

Featured Reviews

Jaehoon Oh

Chief Technology Officer at Lambda256

Supports efficient storage management through volume snapshots and offers reliable non-disruptive upgrades

I have no specific improvements to suggest for Pure FlashArray X NVMe at this time. The performance statistics could be enhanced. I can see the performance statistics in the Pure Storage console, but it does not show the performance by 4K byte unit. It displays IOPS and bandwidth, but IOPS is about real use, and I want to know how many IOPS are currently running in 4K byte units. I cannot see that IOPS because most storage systems report their performance by 4K byte unit. I want to see Pure Storage performance by 4K byte unit to compare with other storage or other internal NVMe SSD.

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Engineerdb78

Network Engineer at a comms service provider with 10,001+ employees

A solution with a simple configuration and good stability but it's quite expensive

Access to technical support should be improved for our region. Technical support is good, but they're very hard to access. When we have a problem with this storage, it's usually related to a very bad configuration. All-Flash Storage is very, very expensive. They are important solutions so I don't really have any ideas about how to rectify this. The device could use better monitoring tools.

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Augustine Gracious

Service manager at Crescent Technologies

Complicated deployment and poor support persist, affecting overall satisfaction

The deployment process of Lenovo ThinkSystem DM Series is very complicated compared to previous GUI systems. Many customers have lost data while configuring it, indicating a need for improvement. The after-sales service is also very poor. Furthermore, it does not offer basic features like deduplication, and the service is generally considered to be very bad.

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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

"We're able to get higher-density workloads on the same infrastructure, and we have a smaller physical footprint. The performance is excellent – during our test the bottlenecks are never on the X array, it just keeps picking up the pace to match what you need. The real-time visibility is a differentiator in my opinion."

"I appreciate the performance."

"The most valuable features of this solution are its ease of use and performance."

"I use the tool for Oracle databases, Oracle virtual machines, and Oracle Linux databases. I'm on the storage side, not a database administrator."

"Pure FlashArray X NVMe will quickly overcome all the hurdles you face, including network and latency issues."

"The duplication algorithm allows us to get a lot more use out of less storage. We're running a five terabyte array right now and we're running probably about 30 terabytes on it. So the duplication rate is pretty phenomenal, without a cost to performance. It still runs pretty smoothly."

"The Pure1 component is most valuable at this point in time when comparing it with EMC. Pure1 is where you can have your diagnostics in the cloud, so you can look at things from your mobile phone."

"One of the best features is the support, which is excellent."

More Pure FlashArray X NVMe pros

"Scale out is a differentiator for them, especially in the enterprise market. It's key for a lot of customers."

"Data reduction and snapshot abilities: Smaller footprint in the datacenter (lower cost for power, cooling, etc.)."

"The most valuable aspect is the use of solid-state storage drives instead of spinning drives."

"The increased performance is many times above our previous array performance in all metrics. Integration with vSphere features is also a definite plus."

"Implementation of the solution is very simple."

"The speed and, for us in particular in what we're doing, the data de-duplication."

"The most valuable feature is definitely the always-on data deduplication."

"It provides a full feature set without separate licensing (deduplication, compression, snapshot, asynchronous replication, stable performance, etc.)."

More Kaminario K2 [EOL] pros

"Last year, I did a DM Series installation with my colleague, and this installation was effortless because we had Lenovo support on the phone, so it was easy to get help if we had any problems."

"It has been a perfect fit for the workload that our customer is doing."

"One of the most valuable features of Lenovo ThinkSystem DM Series is the snapshot feature."

"The most valuable feature of the Lenovo ThinkSystem DM Series is its ability to store data well."

"Ability to cluster two storages together with HA availability."

"The servers are fast and affordable."

"The product’s quality of service guarantees the performance of each workload."

"The price of this solution is good."

More Lenovo ThinkSystem DM Series pros

Cons

"Right now, the box itself is just strictly working as a backend storage system. It would be fantastic if we could access it directly like a NAS device through network access or SIS drives. I think they have an interface, but I am not sure how good it is. If we could address a box directly on the network without having to go through a server, it would be great. The replication schemas could be improved. We are not using replication on the storage level right now. We use a different type of replication. If their replication would be as good as the one that we have, I would probably run the replication schema because it might be faster, but I don't know that for a fact. So, I cannot say that they have good replication. All I can say is that they need to inform us better."

"Managing data isn't difficult for me. The performance is usually perfect, but we sometimes have capacity problems."

"The tool's portfolio is minimal. It is expensive."

"Adding some functions to the product would be beneficial."

"It feels more suitable for small and medium-sized businesses rather than enterprises."

"It is on the expensive side."

"In terms of what needs improvement, the dashboard and management could be simplified."

"I'd like to see the product implement active replication for vehicles such as VMware."

More Pure FlashArray X NVMe cons

"I think it should have better performance with small files. With big data, its performance is top notch, but it is difficult to load small files."

"The front panel of the drive shelf doesn't always seat firmly."

"I'm hoping to see Active Directory integration. Right now, you still have to use a local admin account to log in and manage everything."

"A single pane of glass to monitor/manage multiple arrays would be helpful."

"Some of the nice to haves for us, in terms of today, would be VVols but again, it’s not a critical feature."

"Access to technical support should be improved for our region. Technical support is good, but they're very hard to access."

"The management graphical interface needs more improvement."

"The system currently has a 15TB LUN size limit and that snapshots need to be scheduled through script API instead of the GUI."

More Kaminario K2 [EOL] cons

"The Lenovo ThinkSystem DM Series was very hard to configure. Installation of the product was very hard. These are its areas for improvement."

"Lenovo could have a wider variety of storage solutions in the NAS space."

"The licensing model needs to be revisited. It needs to be simplified."

"The solution needs a simpler licensing theme around the DM series. The problem is if you only need one of the features, you still have to buy the whole thing. The licensing needs to be more granular or flexible so you have the option to only license FlexCone or Inline Compression features."

"Lenovo ThinkSystem DM Series could improve by having a snapshot feature. Additionally, there can be other features added to help restore the data faster."

"The tool's pricing is high."

"It takes a very long time to enter the management console, as well as to restart the system, and these are things that should be improved."

"I would rate the support of Lenovo ThinkSystem DM Series a four out of five."

More Lenovo ThinkSystem DM Series cons

Pricing and Cost Advice

"Pure FlashArray X NVMe’s pricing is cheaper than other products."

"The support cost per array is about $20,000 a year for 24/7 support."

"They can tout the functionality and cutting edge technology that they have, but that's where the price tag comes in. The cost is high, but I think as they grow their business and get more customers that it will probably go down a little bit."

"The licensing is on a yearly basis."

"With Pure Storage, we would like to continue seeing price reductions with flash storage. I don't think we're any different than anybody else when we continue to look to the industry for price reductions of both NVMe and traditional SSD storage. We would like to see these prices continue to decline and erode, even displacing large spinning disks."

"The tool is an investment that we've budgeted for. While the prices may be higher than those of other vendors, we see it as a market leader with benefits. We don't regret purchasing it."

"Its price could be better. It is not too expensive, but it is the high-end cost. It is kind of a Rolls-Royce. You pay a lot, but you get a lot out of it. So, the price pressure on the way down would be great, but at the end of the day, if you need to do the work, you just pay for it."

"Our licensing fees are $500,000+ USD."

More Pure FlashArray X NVMe pricing and cost advice

"The "extra" costs associated with features and options that are available off the shelf with Kaminario, make their value proposition extremely competitive."

"The Kaminario setup is simple and there are no hidden licensing fees so this area is a relief."

"Kaminario is very competitive on price. They also have a pay per TB model."

"All features are provided in the licensing. The cost of Kaminario was less than the cost of a hybrid array."

"The licensing is all-inclusive."

"I would like them to come down in price. It is as expensive as EMC, Hitachi, and other major vendors."

"Licensing is very straightforward. The cost was considerably lower than other products we looked at."

"Lenovo offers two software tiers for the DM Series: basic and premium. If you need more features like the MetroCluster, you must buy the premium version. You can stick to the basic software if you don't need MetroCluster or features like asynchronous replication. That makes DM Series a little cheaper."

"The solution is highly-priced."

"The price of the Lenovo ThinkSystem DM Series is good."

"The solution's pricing is similar to Dell and HPE."

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Top Industries

By visitors reading reviews

Computer Software Company

12%

Manufacturing Company

11%

Financial Services Firm

11%

Government

No data available

Computer Software Company

21%

Comms Service Provider

Manufacturing Company

Retailer

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	15
Midsize Enterprise	11
Large Enterprise	12

By reviewers
Company Size	Count
Small Business	4
Midsize Enterprise	4
Large Enterprise	9

By reviewers
Company Size	Count
Small Business	13
Midsize Enterprise	2
Large Enterprise	2

Questions from the Community

What do you like most about Pure FlashArray X NVMe?

Pure FlashArray X NVMe helps to improve our processing speed. It is user-friendly and easy to use.

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What is your experience regarding pricing and costs for Pure FlashArray X NVMe?

The price of Pure FlashArray X NVMe is very expensive, though I do not know the actual price because I am using the E...

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What needs improvement with Pure FlashArray X NVMe?

I have no specific improvements to suggest for Pure FlashArray X NVMe at this time. The performance statistics could ...

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What is your experience regarding pricing and costs for Lenovo ThinkSystem DM Series?

There are extra expenses beyond the standard licensing fee for features such as replication and deduplication, which ...

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What needs improvement with Lenovo ThinkSystem DM Series?

The deployment process of Lenovo ThinkSystem DM Series is very complicated compared to previous GUI systems. Many cus...

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What is your primary use case for Lenovo ThinkSystem DM Series?

My primary use case for Lenovo ThinkSystem DM Series ( /products/lenovo-thinksystem-dm-series-reviews ) is for storag...

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Comparisons

Dell PowerStore vs Pure FlashArray X NVMe

Compared 18% of the time

Dell PowerMax vs Pure FlashArray X NVMe

Compared 12% of the time

HPE Alletra Storage vs Pure FlashArray X NVMe

Compared 10% of the time

TrueNAS R-Series vs Pure FlashArray X NVMe

Compared 9% of the time

Pure Storage FlashBlade vs Pure FlashArray X NVMe

Compared 8% of the time

More Pure FlashArray X NVMe Competitors

No data available

NetApp AFF vs Lenovo ThinkSystem DM Series

Compared 32% of the time

NetApp FAS Series vs Lenovo ThinkSystem DM Series

Compared 15% of the time

Dell PowerStore vs Lenovo ThinkSystem DM Series

Compared 12% of the time

Lenovo ThinkSystem DE Series vs Lenovo ThinkSystem DM Series

Compared 9% of the time

HPE Alletra Storage vs Lenovo ThinkSystem DM Series

Compared 5% of the time

More Lenovo ThinkSystem DM Series Competitors

Product Reports

Buyer's Guide

Pure FlashArray X NVMe

January 2026

Download Pure FlashArray X NVMe product report

Buyer's Guide

Kaminario K2 [EOL]

January 2026

Download Kaminario K2 [EOL] product report

Buyer's Guide

All-Flash Storage

January 2026

Download Lenovo ThinkSystem DM Series product report

Also Known As

Pure FlashArray//X NVMe, Pure FlashArray//X, FlashArray//X

No data available

ThinkSystem DM Series

Overview

Pure Storage FlashArray//X is the world’s first enterprise-class, all-NVMe flash storage array. It represents a new class of storage – shared accelerated storage, which is a term coined by Gartner – that delivers major breakthroughs in performance, simplicity, and consolidation.

Pure Storage

Kaminario K2 is the world’s only storage solution that delivers the predictability needed to handle the highly unpredictable world of modern businesses. This highly flexible all flash storage platform allows customers to cost-effectively scale capacity and performance to support their ever-changing business –seamlessly, on-demand and with no disruptions.

Data Sheet and eBook

Silk

To meet enterprise storage requirements, ThinkSystem All-Flash DM Series systems provide high performance, superior flexibility, and best-in-class data management. DM Series runs on ONTAP data management software, which gives customers unified storage across block-and-file workloads. It accelerates your business while improving the efficiency, flexibility, and reliability of your IT operations.

Lenovo

Sample Customers

Fremont Bank, Judson ISD, The Nielsen Company

Wargaming.net, El Rio Community Health Center, ECN, SpotOption, Ashkelon College, Clearwater Analytics, Intigua, Cobb EMC Customer Case Study

Information Not Available

Find out what your peers are saying about Dell Technologies, Hewlett Packard Enterprise, NetApp and others in All-Flash Storage. Updated: January 2026.

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