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.
"What I really like about this program, is that it is easy to use and easy to configurate."
"The solution is scalable."
"The most valuable feature of this solution is its ease of use."
"Offers excellent features like efficient data reduction, a reliable SafeMode, and a great support model for continuous assistance and updates."
"Pure FlashArray X NVMe has low latency and high Ops. It is an evergreen model."
"The solution is very straightforward to set up."
"It has benefited my organization because it has reduced time to insights."
"One of the best features is the support, which is excellent."
"This solution is very useful to us as we use it internally for all of the services that we need. We use it as a lab and we showcase new technology to the customers and how it can help them going forward."
"Pricing is very good. It's very competitive against those of all the others that I looked at in the marketplace, such as Hitachi, IBM, HP, and Pure. Dell is right there in the mix as far as providing the best price point as well as meeting the performance requirements that we have."
"Reliable, with comprehensive features and a well-established support base."
"It is a stable solution."
"Its flexibility is valuable because we have had some moments where we had to adapt, and it has been quite flexible."
"The way you're able to manage all your PowerStores as one solution is very good for us. PowerStore enables you to federate or cluster multiple appliances with automated load balancing. In terms of management, it's helpful that we can do it from a single interface where we're able to manage multiple PowerStores. When you have multiple PowerStores it works intelligently by running the workloads based on the needs of the infrastructure."
"The supportability of SCME drives for faster data access from the PowerStore and is the most valuable feature."
"The solution is easy to use and has good performance."
"The technical support is very professional and provides quick responses."
"I like that the performance is very good."
"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."
"The most valuable feature is the ability to provision storage from the CLI, versus having to go in and use the GUI every time. I can just script it out and it will create what I need. That makes it super-easy to manage. Also, for us, it's a set-and-forget. Once we provisioned it out, we haven't had to mess with it."
"The feature that I have found most valuable is the unified storage. Also, its capabilities for block-access, file access, and the center box."
"It is easy to manage. A lot of the system manages itself."
"It's very reliable. I have not had an issue with Dell EMC Unity."
"It is great because it can work as a SAN and net storage."
"In terms of what needs improvement, the dashboard and management could be simplified."
"There is room for improvement in catering to midrange storage needs, especially for customers seeking Enterprise-class features."
"Many options to check performance, like read, writes, random writes, and random reads, are missing in Pure FlashArray X NVMe."
"Efficiency improvements would always be welcome, but I'm not sure if they could get more efficient."
"We would like to see more visibility into garbage collection and CPU performance in the GUI."
"It is on the expensive side."
"I would like to see replication and DR features in the next release of this solution."
"We would like to see VNC integration or be able to use Pure Storage with VNC."
"The cost of technical support is high."
"It needs more mature code."
"The upgrades themselves are running fine, but after the upgrade is when we have a problem. With the update to 1.4, we had a head crash. They told us, 'This is a known issue. Please upgrade to 2.' We upgraded to 2 and, one week later they told us, 'Yeah, there are some issues in 2.0.0. You can lose data. Please upgrade to 2.0.1.' Overall, they need to make the system stable."
"I do not like having to use VPLEX for synchronous replication, as opposed to having the store software built-in."
"Horizontal scaling has room for improvement."
"Where the system needs to improve is by adding more enterprise features like replication on other sites. We would also like it to be much more aligned with the VMware version. For example, today we have two different versions of VMware ESXi running to keep the PowerStore online. It would be better if the software cycling was faster."
"Could be improved by including a synchronizing feature for the file systems."
"We would consider this solution if the pricing is competitive with other options, as it offers a very good solution. However, the current price is slightly higher than the competition."
"I haven't seen the roadmap for this solution."
"Unity only does compression. It would be nice if there was a deduplication feature as well. At my previous job, we used XtremIO and that was deduplication and not compression, and I think we got more out of it because the more OSs you have that are the same, the fewer copies it needs to keep of all that data. So, the deduplication would be a nice feature to have."
"This product needs to have better integration with enterprise backup solutions and archiving devices."
"In terms of what could be improved, I would say its capacity and its connection."
"The solution should include a free process in the HPE portal that uses serial numbers to verify that hardware is genuine."
"It would be nice to have been able to easily move off our old VNX system to this system. The process is very manual."
"Dell Unity XT could improve the compatibility of some of the features. Some of my customers had some problems. Additionally, it would be beneficial for the solution to have advanced AI and ML features."
"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."
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.