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Dell Unity XT vs VNX [EOL] comparison

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Comparison Buyer's Guide

Executive Summary

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
Average Rating
9.0
Reviews Sentiment
7.6
Number of Reviews
35
Ranking in other categories
All-Flash Storage (15th), NVMe All-Flash Storage Arrays (6th)
Dell Unity XT
Average Rating
8.4
Reviews Sentiment
7.1
Number of Reviews
194
Ranking in other categories
All-Flash Storage (4th)
VNX [EOL]
Average Rating
8.0
Number of Reviews
36
Ranking in other categories
No ranking in other categories
 

Q&A Highlights

it_user752949 - PeerSpot reviewer
Dec 03, 2017
 

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.
RS
​The VNX 5700 provides a large number of features including the ability to work for both file and block as a unified array.
Once you establish a replication job, when the file system is synchronizing its data to the target file system, it tends to create a balloon effect where it creates a file system that grows as the new data is synchronizing. It would be very helpful if the replication job could incorporate a self-cleaning job after the synchronization job completes to reduce the size of the file system in the target automatically. Very often, we have to run a script called “SavVolReclaim” to clean up space consumed while the replication is in progress. If the replication job hits its maximum capacity of 16TB while synchronizing, it stops the replication job. By adding this reclaim process natively, it would eliminate additional unnecessary work for the storage administrators. It would be very helpful to get an automated report that shows you the size of the checkpoints and get warnings when a checkpoint is reaching either maximum capacity per a file system or hitting the ceiling on the SavVol pool consumption.

Quotes from Members

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

Pros

"The duplication algorithm allows us to get a lot more use out of less storage. We're running a five terabyte array right now and we're running probably about 30 terabytes on it. So the duplication rate is pretty phenomenal, without a cost to performance. It still runs pretty smoothly."
"It has good, reliable, fast storage."
"Overall stability is very good. It is a very stable solution."
"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."
"Offers excellent features like efficient data reduction, a reliable SafeMode, and a great support model for continuous assistance and updates."
"The database workloads are pretty fast because I frequently move data from here to there."
"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."
"The initial setup was extremely simple and straightforward."
"Unity's are more easily administrated, so we need fewer people to do the administration. We have less overhead because of that."
"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."
"Scalability is good."
"I like the easy management with the new Unisphere management and the HTML5 interface."
"Dell Unity XT is a unified box, and it is integrated with VVOL, our software-defined storage."
"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."
"Provides good provisioning, allowing us to save space."
"I like that when you log in it gives you a dashboard of what your storage looks like."
"The implementation of both block and file system storage in a single GUI provides is better situated than most other storages."
"It is very stable, even during multiple power failures."
"The most valuable feature is the auto-tiering, which helps in the speed of data access."
"One of the best features of the VNX is the ability to combine drives of different types into a virtual Storage Pool. By combining small but fast flash drives, SAS drives, and high-capacity but slower NL-SAS drives, the VNX can intelligently move data to the different tiers of storage based on usage."
"Integration with VMware"
"FAST (auto-tiering): Doesn't require configuration and is managed by the array itself."
"I really value deduplication and compression to save space."
"From my point of view, the configuration that I can sell is restricted to the EMC best practices. It is hard to make a mistake in a solution. It means the configuration has good performance and scalability options."
 

Cons

"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."
"There is room for improvement in catering to midrange storage needs, especially for customers seeking Enterprise-class features."
"I'd like to see the product implement active replication for vehicles such as VMware."
"I would like to see some AI features that would allow arrays to intelligently identify threats or unusual behavior in the data pattern and give an alert."
"We've seen that when we create a POD in synchronous mode, it increases the latency."
"There is room for improvement in the pricing of the product."
"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."
"Our use cases require more multi-tenant capabilities and additional VLAN interfaces for separating different customers. We currently use it to provide storage, sometimes shared storage, to different customers, but it is less flexible in comparison to a dedicated solution."
"Currently, the protocol SNMP is not implemented. That's a problem, as we follow this protocol and I can't check the integrity of this equipment."
"It needs more functionality and the ability to move across more landscapes."
"We've also encountered an issue when it comes to migrating to compressed LANs on the Unity, and during the Storage vMotion. It appears that the compression algorithm is overwhelmed, and when it becomes overwhelmed it just stops compressing and writes the raw data to the destination. We later copied internally another Storage vMotion to another compressed LAN and achieved much higher compressions on that internal copy. It would be really nice if there was a way to automatically throttle, as a part of a Storage vMotion, to say, "I want to gain the maximum benefits from the compression algorithm, so throttle back the Storage vMotion to implement 100 percent compression.""
"I would like it to be a little bit easier to contact support. We can contact support, but we have to go through a phone tree. We get routed to different places. I might call support to say that I need a drive replaced and get transferred to three different groups before I get to the group I actually need."
"It could always use native replication. Then I could get rid of RecoverPoint."
"Ordering is easy, but the processing site and working with those companies was difficult."
"There is room for improvement in manufacturing."
"There are some features in VNX that I wish were in the Unity. For example, Storage Groups for isolating LANs and hosts. That is a big issue."
"Based on our workloads, we see repeatedly in performance reports that the built-in controller (SP) cache of our VNX model is not sufficiently large, resulting in forced cache flushing."
"VNX can improve by offering flexible upgrade options. It's not possible to add a single HDD to a current array and there are fixed rules to make upgrades."
"The administrative console (Navisphere/Unisphere) needs some improvement, especially on their Java-based GUI. The updated version of Java is not compatible."
"EMC VNX needs to support bigger SSD and the Next Generation EMC Unity does this."
"Poor connection to FC."
"It would be very helpful to get an automated report that shows you the size of the checkpoints and get warnings when a checkpoint is reaching either maximum capacity per a file system or hitting the ceiling on the SavVol pool consumption."
"If the VNX had embedded encryption, that would be great."
"There is an easy replication process between distinct data centers via VPLEX and/or RPA. But I hope in the future that EMC/Dell could replicate this with other types of storage."
 

Pricing and Cost Advice

"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."
"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."
"The licensing is on a yearly basis."
"As far as the licensing costs, everything is included in the license."
"The tool is an investment that we've budgeted for. While the prices may be higher than those of other vendors, we see it as a market leader with benefits. We don't regret purchasing it."
"Our licensing fees are $500,000+ USD."
"Given its price, Pure is not the first option."
"It was easy to order. We are a big Dell shop, so it was easy to purchase and get it in place, then up and running."
"The flexibility is important. We still have a lot of customers that have a use case for non-flash, yet you can also build the flash version as well."
"From an ROI perspective, I'll put it this way: When we've tried to buy other SANs, the Unity ROI makes it impossible to buy them. So usually, the only time we buy another SAN is when the ROI isn't a factor, because Unity can't do the job. From an ROI perspective, it's great because it beats everything else out. We've tried to look at other options but, at the end of the day, when you price it out, the Unity wins."
"It scales, but then you have to buy additional stuff."
"The price of the solution should be less expensive. However, at some point, you need to pay for facility and performance."
"Licensing is easy since all the software is included."
"The solution is extremely functional for the price that we pay for it. It is worth the investment."
"The support you're getting with it is probably an underestimated value that comes with the box you're buying."
"​Reducing dependency on JavaServer Pages​ (JSP) could improve the administrative overhead.​"
"Over time, VNX has become pricier than its competitors, and we have turned enthusiastically to Unity."
"The initial pricing and licensing are reasonable, the yearly EMC is more expensive"
"Pricing is somewhat higher, especially in Zambia, perhaps due to the low sales volume."
"Make sure you understand how the licensing works and that you are getting the right set of licenses if you need array-to-array replication."
"The initial pricing and licensing are reasonable. Yearly EMC is more expensive."
"While EMC tends to be on the expensive side, the stability and support of their products are top-notch and I feel are worth the cost."
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Answers from the Community

it_user752949 - PeerSpot reviewer
Dec 3, 2017
Dec 3, 2017
Unity series is re-engineered VNX, so the Unity is newer … it makes better use of flash, active – active , dual controller mode; better price point , configurations solid upgrade from the VNX
2 out of 21 answers
CT
Oct 31, 2017
The VNX range is older and is being phased out. I think you mean VNX 5200? That said the Unity 400 is the better investment as it is newer, cheaper to support, faster, and with higher capacity and bigger supported file system size.
it_user281856 - PeerSpot reviewer
Oct 31, 2017
Hope this helps: http://virtualgeek.typepad.com/virtual_geek/2016/05/emc-world-2016-unity-the-story-behind-the-story.html
 

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%
No data available
 

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...
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Also Known As

Pure FlashArray//X NVMe, Pure FlashArray//X, FlashArray//X
EMC Unity, Dell EMC Unity
VNX
 

Overview

 

Sample Customers

Fremont Bank, Judson ISD, The Nielsen Company
Draper, Rio Grande Pacific, Royal Victoria Regional Health Centre
Samsonite, Comanche County Memorial Hospital, Kindred Healthcare
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