We performed a comparison between Dell EMC PowerStore and Dell EMC Unity XT based on our users’ reviews in four categories. After reading all of the collected data, you can find our conclusion below.
Comparison Results: The two products received similar reviews in most categories. According to reviews, Dell EMC PowerStore appears to be a bit more robust and therefore more appropriate for larger environments.
"Pure has signature security technology, which cannot be deleted, even if you are an administrator."
"The most valuable features of Pure FlashArray X NVMe are its superior performance compared to other flash tiers, as well as its ease of use, with an intuitive user interface that is simple to deploy and use."
"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."
"What I really like about this program, is that it is easy to use and easy to configurate."
"The solution is very straightforward to set up."
"The latency is good."
"Technical support has been helpful and responsive."
"Pure FlashArray X NVMe helps to improve our processing speed. It is user-friendly and easy to use."
"Dell PowerStore is an easy and fast tool to work through our company's data."
"The supportability of SCME drives for faster data access from the PowerStore and is the most valuable feature."
"It has its own file formatting protocol, which saves a lot of space."
"Has a great mapping feature."
"The simplicity and ease of use have been very valuable features. I have a very small team, and only half of the team is well versed in the HP product. Whereas if I bring PowerStore in, everyone can learn it because it will be new on the floor."
"The solution is stable."
"The solution is easy to use and has good performance."
"The most valuable feature of Dell PowerStore is the all-NVMe flash storage. This is the most powerful feature of this series. It supports compression and duplication leads."
"The most valuable feature is that the solution is a hybrid system, so you can do both block and file storage."
"Key features are ease of use, ease of management, ease of deployment, and the GUI is very user-friendly."
"The fact that it's hybrid is the most valuable feature. We have the SSD so we put our SharePoint on there and some of the stuff that requires a little more speed. For SharePoint, we want the pages to respond a little more quickly. And it's nice to be able to use the slower storage for stuff that we don't need as quickly, like file servers."
"The ease of management and “user-friendly” management environment (GUI)."
"We've never had an issue with storage."
"The Snapshot feature is key."
"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."
"Its main advantage over vSAN was the rebuild, the intelligence of the restoration in the event of a hardware drive failure and, of course, the all-flash solution."
"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 catering to midrange storage needs, especially for customers seeking Enterprise-class features."
"The software layer has to improve."
"In terms of what needs improvement, the dashboard and management could be simplified."
"We've seen that when we create a POD in synchronous mode, it increases the latency."
"I'd like to see the product implement active replication for vehicles such as VMware."
"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."
"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."
"I do not like having to use VPLEX for synchronous replication, as opposed to having the store software built-in."
"The NAS part is very poor. It's very basic. Even Dell EMC has said that to us. We are waiting for version 3 of PowerStore for that. This must be improved and it is in the roadmap."
"While using Dell PowerStore's interface in our organization, we sometimes miss out on some information."
"The cost of technical support is high."
"The support team doesn't always provide adequate assistance. So, there is room for improvement in the support."
"During the installation phase, the licensing part was not straightforward. It was very difficult for the technicians, who are not trained Dell EMC technicians, to do the licensing because the information on their website is not straightforward... Eventually, I had to pass this task to our business partner and they did it for us."
"More demonstration and training options are needed."
"We are happy with the service in general. The only thing would be the price of the platform."
"The Host LUN ID is sequential by access in the hosts. When one LUN needs access by many hosts (for cluster purposes), in some cases the Host LUN ID remains different on each host."
"The initial installation is straightforward and took approximately one hour. However, the full process was not as simple as IBM."
"I have a problem because between the Unity XT and the PowerMax, sometimes we need another product between these two products. There could be better integrated and the capacity of the size could be larger."
"Dell could improve Unity XT by adding support for NVMe."
"The upgrade process needs improvement. I should be able to swap it out, with zero downtime, with another array, down the road. I don't think Dell EMC has anything in the roadmap for this product line. I just don't want to have to deal with that anymore and all of our customers are pretty much the same."
"We would like to see more advanced integration capability added to this solution."
"It should be lighter. It takes up a ton of rack space. It would be nice to have a smaller footprint."
"What I'd like to see is a little more detail on the networking side. I can go into where it's showing me the replication, but when I go into the network it just gives me broad-based information. I don't know which replication job is actually feeding it. I have to go in and rely on other apps."
Dell PowerStore is ranked 1st in All-Flash Storage with 47 reviews while Dell Unity XT is ranked 4th in All-Flash Storage with 189 reviews. Dell PowerStore is rated 8.6, while Dell Unity XT is rated 8.4. The top reviewer of Dell PowerStore writes "It has a very strong NAS that can support a lot of big, heavy environments". On the other hand, the top reviewer of Dell Unity XT writes "Easy to set up with good data compression technology and useful deduplication". Dell PowerStore is most compared with IBM FlashSystem, Pure Storage FlashArray, NetApp AFF, Dell PowerMax NVMe and Huawei OceanStor Dorado, whereas Dell Unity XT is most compared with NetApp AFF, HPE Nimble Storage, Pure Storage FlashArray, IBM FlashSystem and HPE 3PAR StoreServ. See our Dell PowerStore vs. Dell Unity XT report.
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Hello Yasin,
The best solution depends upon your host environment. In general, PowerStore is more powerful than Unity but Unity is also a very good Storage solution.
The Unity 400 is a rather old, a much less powerfull solution and at its best holds ssd flashdrives if at all. Currently you have the Unity 8xx model, which has more CPU punch and therefore maxes out less fast on CPU utilisation. What this means is that you can add more shelves and disks and workloads to it before you hit the roof.
The powerstore 1200 is an nvme storage, is 60% more powerfull (compared to FC/SCSI-SSD on Unity) in our case, and has higher datareduction rates. If the unity reaches out to a datareduction rate of 1.5 or 2, the Powerstore T1200 is capable of 3 to 3.5 datareduction, probably due to half its blocksize. The price of the device is pretty much dependant on the price of its media, and therefore the Powerstore T1200 is the absolute winner.
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Another aspect is that the Powerstore can be used to build a cluster of arrays compared to the sync/asynch replication only feature of the Unity series, rendering the mirrored volumes unuseable unless one fails over to it, like in a disaster recovery scenario.
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The Powerstore also allows true A/A volumes on both sides . What this means is that one can build stretched vSphere clusters and the loss of your array in one site will still allow writing to the alternate protected disk, transparently ! You can have site local writes to your volumes and remain in sync without a need to cross site write.
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There is not much of a reason to settle for the Unity anymore, though some still prefer the Unity for NAS compared to Powerstore, but honestly speaking I won't recommend to use any of both for that purpose unless for limitted useage. Unity allocates RAM ressources dynamically when used for FC/SCSI AND NAS , whereas the Powerstore is initialized in a kind of split off of RAM ressources between NAS/FC SCSI at installation time. The ressource allocation is fixed and can't be altered lateron. Thats a hard call. So I'd favour the Unity only if you use it for low/moderate NAS needs in combination with FC/SCSI or block data and you don't have the budget nor the size to use a NAS optimised array on top.