Dell Unity XT vs IBM FlashSystem comparison

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Executive Summary

We performed a comparison between Dell Unity XT and IBM FlashSystem based on real PeerSpot user reviews.

Find out in this report how the two All-Flash Storage solutions compare in terms of features, pricing, service and support, easy of deployment, and ROI.
To learn more, read our detailed Dell Unity XT vs. IBM FlashSystem Report (Updated: March 2024).
767,847 professionals have used our research since 2012.
Q&A Highlights
Question: When it comes to performance and pricing, what is the biggest difference between Dell EMC Unity and IBM FlashSystem?
Answer: EMC's Unity is not comparable to the performance of an IBM FlashSystem option, but it is fairly close in performance profile to the just released Storewize V5100 model 424. If you provide the initial amount of storage you are going to purchase and your expected capacity growth rate, plus any workoad/performance info you have on hand, and we will give you a very quick TCO and performance comparison.i
Featured Review
Quotes From Members
We asked business professionals to review the solutions they use.
Here are some excerpts of what they said:
Pros
"It is all-flash. This makes it a lot faster than the rest of what we have, as it is able to drive high I/O loads, which is big for us.""We're getting good performance, and the compression ratio is also very good in Pure Storage FlashArray.""The GUI is very easy to use and intuitive.""Pure Storage is extremely reliable — it's never failed.""The job of support for the storage engineers dramatically changed. We know more quickly the automation of the provisioning. We can now focus on things that bring more value to the company than just managing storage.""Access speed and power consumption are most valuable.""Lone segmentation is simpler and more agile. It's improved the velocity in overall provisioning from project to operation.""The solution is easy to scale. I'm running two environments right now, so I need to scale. I'm running a part technology. I've got an A-side and a B-side."

More Pure Storage FlashArray Pros →

"Compared to older generations of arrays there is quite an improvement, compared to the older VNXs, for example. It depends on you use it, but for our purposes, we find Unity simple to use.""It has reduced the latency in application and database reads and writes... All-flash, it's fast. We have the 650 model which is all-flash, upgraded from VNX. It just flies.""The most valuable feature of Dell Unity XT is data duplication. Additionally, the management interface is simple, and is not a hassle using it. You don't need too much to learn or to be familiarized with it.""It has the same operating system for both file and block, and it actually simplifies everything. And it's much smaller compared to VNX.""The performance combined with the gig-per-dollar value is a combination that is superior to other storage options.""The most valuable features are its performance and simplicity.""It's unified, it does block and file, so that is pretty important to my customers who might have file servers around their environment. I can roll them all up into a single array, as well as provide block storage for them on one array.""I like the ease of configuration, the quick setup and the fact that it seems to be hardened. We haven't had any issues with them. In terms of simplicity of ownership, once they're running you don't have to touch them. They're also simple to manage. We came from the VNXe 3200s so it's very similar."

More Dell Unity XT Pros →

"Data deduplication is one of the most valuable features of this solution.""I like most of the features. Its speed, performance, and availability are valuable. We are implementing the data reduction technology the most.""The GUI is very easy and performance is also good.""The most valuable features are flexibility and performance.""High availability and enhanced security; Proven dependability; Data compression with hardware acceleration; Advanced copy services features are all in this product.""When it comes to the interface of the solution we did not encounter any challenges. Additionally, the solution has good documentation.""We are a 100% satisfied with the stability of the solution.""IBM FlashSystem is a stable solution."

More IBM FlashSystem Pros →

Cons
"I would like to see them develop the ability to integrate with more AWS services. There are increasingly more and more services coming out from AWS but there are also certain constraints where we can't move everything over to a cloud as well. We would like for things that are on-premise to be easily integrated with AWS.""FlashArray's capacity for forecasting should be improved because it needs to be a bit more current. I think it's bundled with the deduplication and other compression factors. We need more user interfaces for forecasting in this software and more interfaces need to be integrated with this array management tool.""Going forward, don't complicate things for the customers.""Pure Storage FlashArray could improve the recent file storage capabilities because it is lacking a lot of features.""The product should improve its response time. I have also encountered issues with its configuration.""It needs to improve its price.""They have a product, FlashBlade, which is their object storage integration, and that's something that we haven't integrated with yet. This might be an area for additional focus as it would play into scalability, because the very nature of object storage is that it's infinitely scalable.""I had to contact customer support when a drive failed as I was doing a couple of OS upgrades."

More Pure Storage FlashArray Cons →

"We have only used this solution for less than one year so I don't have any improvements suggestions yet.""We've got massive issues at the moment with IBM AIX. It's not stable. We have a lot of disk errors, production crashes sometimes.""I would like to see better compression, better dedupe. It's not nearly as good as what is built into the XtremIO. I understand why that is the case, but if they can take some of that technology and leverage that a little bit better in the Unity array, that would be great.""It should be lighter. It takes up a ton of rack space. It would be nice to have a smaller footprint.""The support team is well-versed in the AMG solution, having received comprehensive training. They also boast strong partnerships in both VNAM and Korea. The system's user-friendliness is a primary consideration in their choice of solution, emphasizing the importance of service. They place a strong emphasis on service, occasionally requiring approvals. However, with full installations, they have achieved almost uniformity. Their storage approach differs from a consolidated business-based model; instead, it is application-centric. Their investment in solutions is geared towards specific needs, such as the banking or information system, acquiring smaller storage units individually.""I would like to see more integration with other products.""We integrated it with vSphere but that integration was "iffy". It was okay but we had a few challenges with it.""A customer had to buy VMX because Unity didn't have WORM."

More Dell Unity XT Cons →

"This solution could be improved by offering greater amounts of storage.""I know they have a flashcopy manager, but it is extra software, an additional license, and some customers don't like to add addition costs to their infrastructure. If IBM could create, or include snapshot management within the GUI, that would really be helpful.""Events/log analysis tools.""We use some open-source tools for monitoring, such as Grafana and it should be bundled along with IBM FlashSystem.""The pricing needs to be more competitive.""If you want to expand, you cannot expand the disc enclosure. You have to buy a total individual node. Sometimes, this is difficult because we are just looking for capacity and not a node.""They can include Amazon file system S3 protocol in the upcoming releases. It is a cloud file system. IBM FlashSystem doesn't have this feature in the box for high-end or mid-range. We have got requests for this from customers because we need to use S3 for EDI application storage. At the beginning of every year, IBM releases firmware. When I find any bugs in the firmware during the year, I am unable to find any information from IBM regarding the bug. I need to open a ticket, and the IBM engineering team makes a patch only for me. This patch is not public. By creating a customized patch for a client, they don't really solve the issue for everyone. If multiple users have the same bug, IBM should upload the patch on the official website so that we can download it. IBM FlashSystem has a monitoring tool in the box, but it is not advanced. I need a more advanced tool for more advanced equations and monitoring. All top three storage vendors, that is, EMC, IBM, and Pure Storage, don't have a powerful monitoring tool. To monitor our box to show the statistics for I/Os and latency, I need to pay for extra software. The built-in monitoring storage is not mature enough to handle all requests and generate all reports that I need. They can include the functionality to stretch a cluster natively without using any additional boxes. In addition, there are some features that EMC has integrated with the box. These features are not available in IBM FlashSystem.""A big area for improvement is that the data reduction pool feature is not recommended for use in a production environment because it has stability and performance issues."

More IBM FlashSystem Cons →

Pricing and Cost Advice
  • "We feel that the pricing is fair and the licensing process was easy for both."
  • "There is always room for negotiation."
  • "The price was slightly higher than others, but competitive, if you consider all the other features that you get from it."
  • "It is a more expensive solution, but it is worth it. You are getting what you paid for."
  • "For pricing, you have to take into account their performance on deduplication and compression in a $/GB comparison."
  • "We have seen a reduction in total cost of ownership (TCO)."
  • "It is a cheaper solution."
  • "Pure Storage is all-flash, so this sometimes tends to make it a bit more expensive in the beginning."
  • More Pure Storage FlashArray Pricing and Cost Advice →

  • "The price is good for commercial grade storage arrays."
  • "This unit is one of the cheapest storage all-flash arrays in the market and it does well for what it is intended. It can be combined for both file and block storage."
  • "Licensing is easy since all the software is included."
  • "This product is cheaper than the EMC VNX solution. It is good for small businesses."
  • "It is shipped with all licensed, included for this product range, no need to buy additional licenses"
  • "The only improvement would be a lower cost per unit/disks, however on the whole we are very pleased with this product."
  • "For costing, you have to have a budget in mind because SANs can be fairly expensive and EMC offers a wide range of products."
  • "The pricing was quite okay compared to others. We probably got it cheaper because we were the first ones out of the gate, but I would say that it's good value for the money."
  • More Dell Unity XT Pricing and Cost Advice →

  • "Pricing can be considered as per market competition."
  • "The total storage capacity vs price is still quite high for the IBM Flash Array."
  • "It pays to go back and get the best price you can from your supplier. The first offer is not always at the best discount."
  • "Regarding licensing make sure you add at least three years software maintenance from IBM at the beginning, because you will not be able to download firmware updates or any fixes/patches without this."
  • "IBM V7000 has a new license and price structure which provides intuitive licensing based on the functions customers wish to enable and use the most."
  • "The pricing has been very competitive for the last few years. IBM got to the point where they changed the pricing model and we feel very comfortable with the pricing. It's very competitive. Over the last two years, IBM has been coming up with all kinds of interesting promos, especially for the SMB systems. That makes it very competitive price-wise and in terms of performance..."
  • "For a yearly license, it is about $100,000. There are no additional costs. The entire system is included."
  • "The integration is already included in the license cost of IBM FlashSystem. The integration is very easy. You get the IBM storage core with all software, firmware, and upgrades. EMC provides the features in the box, but they are not free for customers. There is a licensing cost for features. We have yearly licensing, but IBM has also provided a new option where you pay as you go. They provide a big box, and I pay, for example, for 10 terabytes. If I exceed 10 terabytes, IBM will charge for the new storage after 10 terabytes. It is a good opportunity in the market for using the storage as a cloud and paying as you go."
  • More IBM FlashSystem Pricing and Cost Advice →

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    Answers from the Community
    Miriam Tover
    BobWhitcombe - PeerSpot reviewerBobWhitcombe
    MSP

    As with any engineered solution, it depends on your needs.  


    However, the bottom line is that for their target markets Dell EMC Unity will generally have a better price at parity performance over IBM's FlashSystem.  


    Both are focused on All-Flash arrays and Dell EMC Unity is where I start with VMWare. If I have a dedicated IBM DB2 application, I would lean toward the IBM FlashSystem. 


    The problem in the VMWare environment is that IBM has done a poor job prioritizing this area and has several I/O bottlenecks and interface driver issues. I expect future resolution, but does that happen before current platforms evolve?

    reviewer1243038 - PeerSpot reviewerreviewer1243038 (CEO/co-founder at a tech services company with 1-10 employees)
    Real User

    Depends what you're expecting. Full compatibility with VMware environment - DellEMC only, IBM FS has problems with iSCSI connections to vsphere 7.02 - it's not supported (FS5200 and vsphere 7.02 server with Intel cards - doesn't work fast (10Gbe - 300MB/s instead of 1,1-1,2 GB/s), no solution for now from IBM and VMware (08/2021). Integration - DellEMC and VMware are one company - everything goes smoothly. Space reclamation didn't work well on IBM systems when connected to vsphere (vsphere 6.5 and V7000 models). When using Microsoft virtualization - no difference - it's more complex to start system but when properly configured - it runs well (fast). But of both of them I would choose HPE systems,:-) (Nimble or Primera):-)

    Questions from the Community
    Top Answer:Both are great platforms, but if you are considering all flash solutions, I would recommend you to consider Pure… more »
    Top Answer:We consume less physical storage because of the solution’s deduplication and compression.
    Top Answer:We have customers who use a three-year or five-year license. We also have customers who use Evergreen.
    Top Answer:I saw that you have doubts about what you chose. I have a lot of experience with the constructor, honestly I can… more »
    Top Answer:They’re both great solutions and I’ve used both EMC is being VERY aggressive on pricing which may be the undoing of… more »
    Top Answer:First of all the decision should be taken looking at similar products in terms of capacity and performance I will show… more »
    Top Answer:The most valuable feature of the solution is SCM (Storage Class Memory), which has the lowest latency value in the… more »
    Top Answer:The solution's infrastructure technology level could be PCI Express 5 instead of PCI Express 4 for the next version. In… more »
    Comparisons
    Also Known As
    EMC Unity, Dell EMC Unity
    IBM Storwize
    Learn More
    Overview

    Pure Storage FlashArray is the world’s first enterprise-class storage array that runs exclusively on the nonvolatile memory express (NVMe) protocol for memory access and storage. It represents a totally state-of-the-art type of storage technology. It offers users shared accelerated storage that delivers cutting-edge features in the realms of performance, simplicity, and consolidation. Pure Storage is fresh and modern today and will be for the next decade. Without forklift upgrades or planned downtime, Pure Storage takes the work out of storage ownership and delivers unprecedented customer satisfaction.

    Pure Storage FlashArray is built with simplicity and reliability in mind. The solution can be implemented and optimized in hours, as opposed to other similar solutions that can take days. It has no moving parts, which removes areas where it could potentially be vulnerable to suffering errors. It is highly stable and gives users the ability to manage system shutdowns in a way that  prevents data loss.

    Benefits of Pure Storage FlashArray

    Some of the benefits of using Pure Storage FlashArray include:

    • A much higher level of speed than similar pieces of technology. Pure Storage FlashArray maximizes the speed at which data can be transferred while at the same time minimizing system latencies that might slow the transfer down. Additionally, it offers users quick memory read and data access speeds.

    • A higher bang for your buck in terms of the storage capabilities you get for the money you pay. They are smaller in size than more standard storage technologies, but they offer flash memory, which enables users to store larger amounts of data than the current standard.

    Reviews from Real Users

    Pure Storage FlashArray is a highly effective piece of storage technology which stands out among its competitors for a number of reasons. Two major ones are its overall robustness and the value that it offers by way of its reliability and ease of use. It provides users with many valuable features that allow them to maximize what they can do with this solution. Pure Storage FlashArray’s reliability and ease of use make it a highly valuable solution. 

    PeerSpot user Prabakaran K., a technical consultant at Injazat Data Systems, notes the robustness of this solution when he writes, "FlashArray has many valuable features. It's very user-friendly and it has high availability, so there is comparatively less downtime. During maintenance, there is no shutdown procedure, so you can directly power off the Array and manage the shutdown process without any data loss, which is a unique feature. Managing replication and data migration is also very easy."

    PeerSpot user Jason D., a cloud solutions architect at a tech services company, notes three features that make this solution valuable when he writes, "We've had different types of storage, and three things of this solution are valuable. The first one is its outstanding performance. The second one is its stability. In the about three years that we've had it, we've had component failures, but we never had a service interruption or any data loss. The third one, which is really critical, is that it is super easy to use in terms of provisioning, storage, and managing the arrays. I'm able to maintain a multi-site environment with a couple of dozen arrays with a single mid-level storage admin."

    Dell EMC Unity XT is one of the best all-flash storage arrays on the market today. Dell EMC Unity XT arrays are designed for performance, optimized for efficiency, and built for a multi-cloud world. In addition, they support digital transformation, enabling businesses to reach the full potential of their data capital quickly and easily. Dell EMC Unity’s All-Flash and Hybrid Flash storage platforms provide the performance, efficiency, enterprise-class software, and virtualization integrations required for running a wide range of virtualized applications.

    Dell EMC Unity XT Features

    Dell EMC Unity XT has many valuable key features, including:

    • Unified storage flexibility: With Dell EMC Unity XT you can consolidate separate storage platforms into a single Unity XT unified storage system via a simple and intuitive (HTML5) management GUI that also connects you to CloudIQ.

    • All-inclusive data protection: Dell EMC Unity XT offers a reliable way to protect application data with all-inclusive data protection services, including snapshots, data-at-rest drive encryption, replication, thin clones, and dynamic pools.

    • Software-defined solutions: Dell EMC Unity XT provides software-defined storage and HA for on-prem and in the cloud solutions.

    • Multi-cloud alignment: With Dell EMC Unity XT you have the ability to build and manage an effective data-first multi-cloud strategy. It allows you to consolidate public and private cloud resources that align with your business goals.

    • Metro node: This feature enables automated business continuity with zero RPO and RTO. It also provides greater flexibility through multi-platform support and replication to any array and has zero performance impact on the storage array.

    • Scalable file system: Dell EMC Unity XT is built with a robust 256TBu file system. The UFS64 file system includes up to 256 independent VMDK clones, 16 thin clones, space efficient snapshots with a simple space reclaim and low IO impact, file system shrink that can reclaim free blocks, simplified Quotas for User, and much more.

    • DevOps integrations: Dell EMC Unity XT supports the Container Storage Interface (CSI) plugin to run Kubernetes workloads.

    Dell EMC Unity XT Benefits

    Some of the benefits of using Dell EMC Unity XT include:

    • High-speed data access
    • Low latency
    • Dual-active controller architecture
    • Multi-cloud
    • Intuitive user interface
    • Cost efficient
    • Solid performance

    Reviews from Real Users

    Below are some reviews and helpful feedback written by Dell EMC Unity XT users.

    A Systems Engineering Manager at a manufacturing company says, "It is definitely one of the most robust, solid, well-performing products that I have dealt with. It is set it and forget it, which is pretty amazing." He also mentions, “We can do both block and file storage on one unit without purchasing a separate device.”

    Peter S., Senior Technical Specialist at a healthcare company, states, “The most valuable feature is reliability. At the end of the day, it just runs. This solution is easy to work with and easy to maintain.”

    PeerSpot user Melvin T., Senior Systems Engineer at Prosperity Bank, explains that the solution is “easy to use and we can add LUNs or space without interruption to end-users. We're able to access it from just about anywhere, as long as we have access to a browser. That feature is really neat because sometimes we will go to a different data center or a different site, and if we need to access it to see a LUN or to see any type of storage, we can do that. That's one of the big takeaways with Unity."

    IBM FlashSystem products are enterprise computer data storage systems that store data on flash memory chips. Unlike storage systems that use standard solid-state drives, IBM FlashSystem products incorporate custom hardware based on technology from the 2012 acquisition of Texas Memory Systems. This hardware provides performance, reliability, and efficiency benefits versus competitive offerings.

    Sample Customers
    Nielsen, Lamar Advertising, LinkedIn, Betfair, UT-Dallas
    Draper, Rio Grande Pacific, Royal Victoria Regional Health Centre
    Celero, Friedhelm Loh Group, Clarks, Mingkang Natregro Health Food Group, Sofia, Etisalat Fights Fraud, UF Health Shands Hospital, Generali, Elecon Engineering Company Limited, Ventiv , Technology, CPFL Energia, Royal Caribbean Cruises Ltd., SciQuest, Coca-Cola Bottling Co. Consolidated, Paddy Power, Kelsey-Seybold Clinic, Interconnect Services, Severstal IP-Only AB, PVU Group GmbH
    Top Industries
    REVIEWERS
    Financial Services Firm19%
    Healthcare Company12%
    Manufacturing Company10%
    Computer Software Company8%
    VISITORS READING REVIEWS
    Educational Organization31%
    Computer Software Company12%
    Manufacturing Company8%
    Financial Services Firm8%
    REVIEWERS
    Financial Services Firm17%
    Healthcare Company13%
    Manufacturing Company11%
    Energy/Utilities Company7%
    VISITORS READING REVIEWS
    Educational Organization65%
    Computer Software Company6%
    Manufacturing Company4%
    Government3%
    REVIEWERS
    Financial Services Firm28%
    Computer Software Company12%
    Government8%
    Comms Service Provider8%
    VISITORS READING REVIEWS
    Computer Software Company18%
    Financial Services Firm11%
    Comms Service Provider8%
    Manufacturing Company8%
    Company Size
    REVIEWERS
    Small Business27%
    Midsize Enterprise16%
    Large Enterprise57%
    VISITORS READING REVIEWS
    Small Business17%
    Midsize Enterprise40%
    Large Enterprise42%
    REVIEWERS
    Small Business30%
    Midsize Enterprise24%
    Large Enterprise46%
    VISITORS READING REVIEWS
    Small Business9%
    Midsize Enterprise70%
    Large Enterprise21%
    REVIEWERS
    Small Business38%
    Midsize Enterprise15%
    Large Enterprise48%
    VISITORS READING REVIEWS
    Small Business29%
    Midsize Enterprise16%
    Large Enterprise55%
    Buyer's Guide
    Dell Unity XT vs. IBM FlashSystem
    March 2024
    Find out what your peers are saying about Dell Unity XT vs. IBM FlashSystem and other solutions. Updated: March 2024.
    767,847 professionals have used our research since 2012.

    Dell Unity XT is ranked 4th in All-Flash Storage with 186 reviews while IBM FlashSystem is ranked 6th in All-Flash Storage with 106 reviews. Dell Unity XT is rated 8.4, while IBM FlashSystem is rated 8.2. The top reviewer of Dell Unity XT writes "Easy to set up with good data compression technology and useful deduplication". On the other hand, the top reviewer of IBM FlashSystem writes "An easy GUI and simple provisioning but our model does not support compression". Dell Unity XT is most compared with Dell PowerStore, NetApp AFF, HPE Nimble Storage, HPE 3PAR StoreServ and Dell PowerMax NVMe, whereas IBM FlashSystem is most compared with Dell PowerStore, NetApp AFF, Hitachi Virtual Storage Platform, HPE Nimble Storage and Dell PowerMax NVMe. See our Dell Unity XT vs. IBM FlashSystem report.

    See our list of best All-Flash Storage vendors.

    We monitor all All-Flash Storage reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.