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."Pure FlashArray X NVMe has low latency and high Ops. It is an evergreen model."
"The standout features for us in Pure FlashArray X NVMe are its robust DDoS protection, seamless transparent failover, and failback capabilities ensuring high availability."
"Pure has signature security technology, which cannot be deleted, even if you are an administrator."
"FlashArray has some fresh efficiency features. I've never seen a storage solution with a compression rating this high before. It's at least 4-to-1 on Oracle databases. It's the best flash storage for Oracle."
"The most valuable feature of this solution is its ease of use."
"It's incredibly easy to use and greatly simplified our ability to both deploy and manage our storage subsystems."
"It's helped us because we've changed fundamentally what we talk about. We don't talk about storage and different tiers of storage anymore nor do we talk about servers. We talk now about applications and how applications impact the business and end users."
"Pure FlashArray X NVMe will quickly overcome all the hurdles you face, including network and latency issues."
"We have simplified it down to where we're using one storage pool inside the Unity, whereas on the VNX, we had multiple storage pools. This has simplified that aspect for us. It would depend on each organization. We're heavy into VMware and this ties into it so simply. It's made it a lot easier for us. I create a datastore inside Unity, it just shows up in VMware. I love that tie-in."
"It's easy to use, easy to manage, easy to troubleshoot, and the process support is good."
"We currently have two Dell EMC Unities going. One of them at our primary on-premise DR site. They communicate with each other. If we ever have to failover, it is right there and ready."
"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."
"We just recently started using the Dynamic Pools, so while it's scalable, we actually find it valuable that we can just pop in one or two drives when we need to, instead of having to add a whole RAID set. That has actually been very handy for us."
"Key features are ease of use, ease of management, ease of deployment, and the GUI is very user-friendly."
"Its quick integration with VMware. The ability to stand up a data store in one place, where you don't have to go and rescan for the data store through the vCenter Client, as well as SMB shares. This ended up being a big selling point for us."
"It has made deployment, configuration, and maintenance a lot simpler."
"The compression and deduplication features are the most valuable."
"The FlashSystem 900 consistently delivers performance below 1ms for read/write. This performance is essential for an effective SVC stretch-cluster configuration across two datacenters, and presenting active-active storage to the customer."
"IBM FlashSystem has been stable in our operations."
"The most valuable features are deduplication and compression, which together, enable you to have more space."
"The most valuable feature is that is supports a high IOPS rate."
"IBM FlashSystem has an easy to use GUI, similar to the IBM Storewize family, which make it one of the best flash storage systems in the market."
"The most valuable feature of the solution is compression."
"The most crucial feature of IBM FlashSystem is compression."
"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."
"They could add more support for file storage and different types of storage."
"If the customer only needs 500 terabytes and doesn't care how much data they'll put in the server, IBM is cheaper than Pure."
"It is on the expensive side."
"Many options to check performance, like read, writes, random writes, and random reads, are missing in Pure FlashArray X NVMe."
"There is room for improvement in the pricing of the product."
"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."
"We would like to see more visibility into garbage collection and CPU performance in the GUI."
"Dell EMC Unity is not sexy. It doesn't have all the flash and pizzazz of some of the other storage vendors."
"It would be nice to have been able to easily move off our old VNX system to this system. The process is very manual."
"It isn't easy to find trusted partners for the product. The solution has issues with mid-level storage and does not come with enterprise storage."
"It could always use native replication. Then I could get rid of RecoverPoint."
"Improve the interface and provide more management capability."
"On the data domains - for the Unity product, but specifically for data domain - I would like a much easier interface for managing, for actually going in and having one place where I could get all of the different parts of the overall unit. And I would also like to be able to identify individual disks a lot more easily."
"There are features still to come, like compression and deduplication on hybrid platforms, VDM improvements to be developed for NAS environments, and also improvements in the “self-migration” tools to push or pool information (to assist the migrations to and mostly from third-party arrays)."
"We had one incident with a memory leak that led to controller reboot. Although it had no impact, when such things happens the storage should be more aware of it, send alerts, and propose corrective actions."
"We had issues when attempting to do a flash, we hope to resolve it soon."
"The array level RAID does not seem available."
"IBM FlashSystems is lagging in optimizing storage technologies."
"The solution should improve its pricing and the mechanism in the reduction pool."
"Additional licenses might be added for the fundamental licenses, such as those for copying and flash copies."
"In IBM FlashSystem, data reduction is an area with shortcomings where improvements can be made in the future."
"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."
"I would like to have a larger disk. Right now, you can get 57 terabytes in a shelf. Once they get the larger disk and you get larger capacities, it'll be even better."
Dell Unity XT is ranked 4th in All-Flash Storage with 190 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, Pure Storage FlashArray and HPE 3PAR StoreServ, whereas IBM FlashSystem is most compared with Dell PowerStore, Pure Storage FlashArray, Hitachi Virtual Storage Platform, NetApp AFF and Huawei OceanStor Dorado. See our Dell Unity XT vs. IBM FlashSystem report.
See our list of best All-Flash Storage vendors.
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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?
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):-)