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Dell Unity XT vs Lenovo ThinkSystem DM Series comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Sep 18, 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 FlashArray X NVMe
Sponsored
Ranking in All-Flash Storage
15th
Average Rating
9.0
Reviews Sentiment
7.6
Number of Reviews
35
Ranking in other categories
NVMe All-Flash Storage Arrays (6th)
Dell Unity XT
Ranking in All-Flash Storage
4th
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
194
Ranking in other categories
No ranking in other categories
Lenovo ThinkSystem DM Series
Ranking in All-Flash Storage
25th
Average Rating
7.8
Reviews Sentiment
6.0
Number of Reviews
14
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of April 2025, in the All-Flash Storage category, the mindshare of Pure FlashArray X NVMe is 0.8%, down from 0.9% compared to the previous year. The mindshare of Dell Unity XT is 7.8%, down from 10.1% compared to the previous year. The mindshare of Lenovo ThinkSystem DM Series is 2.2%, down from 2.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
All-Flash Storage
 

Featured Reviews

Eugene Hemphill - PeerSpot reviewer
Helps to save money and resources with the data compression feature
One point I'd like to improve is that the tool should start selling small boxes again. It discontinued some products and is focusing on bigger, more capable boxes, neglecting the SMB market. Even though it's not a big market, it shouldn't have removed them. One way to improve the product is to add an operational assistant that doesn't depend on VMware. It could also establish more alliances with other operational systems.
Syed Habib - PeerSpot reviewer
Efficient data replication and fast IOPS have improved operational performance
Dell and a partner jointly implemented this solution in Auvink. We installed the Flash, which makes our IO operations fast and efficient. Replication is available, allowing us to replicate data simultaneously from one site to another. All-flash technology and vTXT enhance speed, and the IOPS are faster. The cache's IOPS are much better. Snapshots provide a unique feature for testing and make management more comfortable and easy. The platform is multi-supported and certification is more convenient and easy to manage.
Mark Richmond - PeerSpot reviewer
Reliable and fast servers with good support
We use on-premise servers with Lenovo ThinkSystem. We set up Hyper-V and load multiple types of servers including a domain controller, a SQL Server, and application servers The solution provides fast servers that are reasonably priced. We set up RAID ten to ensure drive redundancy, leading to…

Quotes from Members

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

Pros

"The initial setup was extremely simple and straightforward."
"It offers competitive performance, and the Evergreen storage model of Pure fits well with my organization."
"The solution is scalable."
"The high availability of the product is the most valuable feature."
"Pure Storage has signature security technology, which cannot be deleted, even if you are an administrator."
"We are satisfied with the performance as it is significantly faster compared to traditional storage options."
"On a scale of one to ten, I rate Pure FlashArray as ten."
"The most valuable features of this solution are its ease of use and performance."
"The initial setup is very easy. I would rate my experience with the initial setup a nine out of ten, with one being difficult and ten being easy."
"I don't think I've ever seen latencies above 10 milliseconds unless it was something that wasn't the array that was messing up. The thing is rock-solid."
"It will certainly help us scale bigger. If I look at the footprint, the VNX's was multi-rack. Now, all of a sudden, we're only at a portion of a rack. And, obviously, if we can scale within the same rack - we can certainly see that by the number of hard drives we've had to put in - we can scale a lot more easily."
"Unified block and file storage without the need of control stations and data movers. This simplifies administration and deployment and requires less rack space."
"There has been no downtime. It has built-in redundancy upon redundancy."
"VMware integration: Grants both the Storage and Virtual Administrator the ability to create and mount datastores, or even to check how much space each VM is consuming."
"The Unity XT box is very strong. It doesn't break. The MTBF time is very large so you don't have to worry about faults or outages in your operations."
"It has reduced complexity."
"The FlexClone feature is the solution's most valuable aspect."
"It has been a perfect fit for the workload that our customer is doing."
"The most valuable feature of Lenovo ThinkSystem DM Series is its capability to tier to the cloud, such as Microsoft Azure or Amazon AWS. Additionally, the integration is good and they are user-friendly."
"The price of this solution is good."
"Ability to cluster two storages together with HA availability."
"The value we derive from using it is greater than other alternatives like HPE and Dell."
"One of the most valuable features of Lenovo ThinkSystem DM Series is the snapshot feature."
"We are satisfied with the stability."
 

Cons

"We've seen that when we create a POD in synchronous mode, it increases the latency."
"We have run into a couple of instances recently where we are running out of space. So we have had to buy some more packs for it and they have deployed fine and it has increased smoothly."
"In terms of what needs improvement, the dashboard and management could be simplified."
"In the next release, I would like to see real-time analytics for further insight into consumption models."
"Every time I think of something that needs to improve, they're one step ahead, which I love. The only area I wish to see improve, I believe is coming, is in the FlashBlade product. Blade implementation fell short on a few of the services."
"Adding some functions to the product would be beneficial."
"You cannot tag a LUN with a description, and that should be improved. What I like on the Unity side is that when I expand LUNs or do things, there is an information field on the LUN. This is the Information field that you can tag on your LUNs to let yourself know, "Hey, I've added this much space on this date". Pure lacks that ability. So, you don't have a mechanism that's friendly for tracking your data expansions on the LUN and for adding any additional information. That's a downside for me."
"The UI for this solution needs to be improved."
"Our customers are mostly happy with Unity except for the price. We primarily sell to enterprise companies because small companies cannot afford it."
"I rate the scalability of Dell Unity XT a nine out of ten."
"The one thing that we would look at would be if they were to expand the file level features, just to give us a balance or a tier between it and Isilon options out there, for unstructured data."
"We did encounter a firmware bug which actually caused loss of data. There was some heartburn around that. But in general, it has operated as expected, except for that bug."
"In some countries, spare part availability is an issue for us."
"Licensing costs could be reduced."
"We have had some downtime. Nothing is perfect. Unity’s have had some code-release problems, versions that, from a compatibility perspective, had some glitches which caused an outage. But, given the amount of Unity’s we run, that has been fairly minor and it hasn't happened at scale or across all of our Unity’s."
"It's very frustrating that it's not backward-compatible with the previous platforms, so it's a struggle for a lot of our customers."
"The solution should change the licensing model and allow customers to choose features based on their requirements."
"I would rate the support of Lenovo ThinkSystem DM Series a four out of five."
"I would like Lenovo to add a feature like IBM Easy Tier to DM Series. This is a crucial feature for the customers."
"Lenovo could have a wider variety of storage solutions in the NAS space."
"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."
"The licensing model needs to be revisited. It needs to be simplified."
"There might be improvements needed in drive throughput as disk speed has been a limitation on Windows servers."
"This is an expensive solution."
 

Pricing and Cost Advice

"Our licensing fees are $500,000+ USD."
"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."
"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."
"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 support cost per array is about $20,000 a year for 24/7 support."
"With VMware, we pay $300,000 annually."
"As far as the licensing costs, everything is included in the license."
"The product is expensive."
"Currently, we buy directly from Dell EMC. We've tried going through resellers before, but we've found that if we go directly through Dell EMC, we get a good a price from being with the government."
"The price of Dell Unity XT could improve. However, it is a one-time purchase."
"The Dell EMC Data Protection license covers everything, like a one stop shop. All our options are covered."
"The support you're getting with it is probably an underestimated value that comes with the box you're buying."
"Licensing is a little bit confusing. Going through everything with them, there are a lot of line items to go over. Every single thing is broken down into a line item, and it starts to get really confusing in terms of what we're actually purchasing when it comes to the product."
"Our big return of investment is the ability to scale and not add FTE counts nor extra administration."
"Licensing is fine. We worked with a sales rep to purchase our Unity."
"When you look at what Dell EMC is compared to, like NetApp, they're all priced pretty similarly. I think the pricing of the hybrid model is good."
"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 price of the Lenovo ThinkSystem DM Series is good."
"The solution is highly-priced."
"The solution's pricing is similar to Dell and HPE."
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Top Industries

By visitors reading reviews
Computer Software Company
15%
Financial Services Firm
11%
Manufacturing Company
11%
Government
6%
Educational Organization
72%
Computer Software Company
5%
Manufacturing Company
3%
Government
2%
Computer Software Company
20%
Comms Service Provider
8%
Financial Services Firm
7%
Manufacturing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

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.
What needs improvement with Pure FlashArray X NVMe?
Adding some functions to the product would be beneficial. Storage replication should be essential, and the analytics ...
What is the Biggest Difference Between Dell EMC Unity and NetApp AFF?
I saw that you have doubts about what you chose. I have a lot of experience with the constructor, honestly I can reco...
What is the Biggest Difference Between Dell EMC Unity and NetApp AFF?
They’re both great solutions and I’ve used both. EMC is being VERY aggressive on pricing which may be the undoing of...
What is the Biggest Difference Between Dell EMC Unity and NetApp AFF?
First of all the decision should be taken looking at similar products in terms of capacity and performance. I will sh...
What do you like most about Lenovo ThinkSystem DM Series?
The product’s quality of service guarantees the performance of each workload.
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 ...
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...
 

Also Known As

Pure FlashArray//X NVMe, Pure FlashArray//X, FlashArray//X
EMC Unity, Dell EMC Unity
ThinkSystem DM Series
 

Overview

 

Sample Customers

Fremont Bank, Judson ISD, The Nielsen Company
Draper, Rio Grande Pacific, Royal Victoria Regional Health Centre
Information Not Available
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