What users are saying about
21 Ratings
<a href='https://www.trustradius.com/static/about-trustradius-scoring' target='_blank' rel='nofollow noopener'>trScore algorithm: Learn more.</a>Score 7.6 out of 100
Based on 21 reviews and ratings
Dell EMC Unity
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Top Rated
37 Ratings
<a href='https://www.trustradius.com/static/about-trustradius-scoring' target='_blank' rel='nofollow noopener'>trScore algorithm: Learn more.</a>Score 9 out of 100
Based on 37 reviews and ratings
Feature Set Ratings
Enterprise Flash Array Storage

Dell EMC PowerScale (EMC Isilon)
Feature Set Not Supported
N/A
9.0
Dell EMC Unity
90%
Dell EMC Unity ranks higher in 6/6 features
Dell EMC Unity ranks higher in 6/6 features
Flash Array Performance

N/A
0 Ratings
9.3
93%
15 Ratings
Flash Array Integration

N/A
0 Ratings
9.3
93%
15 Ratings
Data Compression

N/A
0 Ratings
9.1
91%
14 Ratings
Non-Intrusive Upgrades

N/A
0 Ratings
8.5
85%
17 Ratings
Simplicity

N/A
0 Ratings
8.8
88%
17 Ratings
Power Savings

N/A
0 Ratings
9.1
91%
16 Ratings
Attribute Ratings
- Dell EMC Unity is rated higher in 1 area: Likelihood to Recommend
Likelihood to Recommend

9.0
Dell EMC PowerScale (EMC Isilon)
90%
5 Ratings
9.2
Dell EMC Unity
92%
22 Ratings
Usability

Dell EMC PowerScale (EMC Isilon)
N/A
0 Ratings
7.0
Dell EMC Unity
70%
3 Ratings
Support Rating

Dell EMC PowerScale (EMC Isilon)
N/A
0 Ratings
8.9
Dell EMC Unity
89%
9 Ratings
Likelihood to Recommend
Dell EMC PowerScale (EMC Isilon)
EMC Isilon Scale-Out NAS is well suited for larger files (greater the 128 Kb) and where you need to have everything in one common name space. Where it is less appropriate is for many small files (millions of files less than 128 Kb in size) - this causes the protection level to becoming mirroring, which will cost more space.

Verified User
Employee in Information Technology
Higher Education Company, 1001-5000 employeesDell EMC Unity
Dell EMC Unity is an easy system and very flexible component and very easy to navigate while providing effective services and management of multiple project information management and the data pulling from the supported third-party platform is easy and quick. Excellent reporting features and easy to use and the analytics tools are amazing.
Project Delivery Manager
Very Good SecurityComputer & Network Security, 51-200 employees
Pros
Dell EMC PowerScale (EMC Isilon)
- NAS Storage
- Capacity and Performance details of the array
- Alert and Operations details

Verified User
Engineer in Research & Development
Computer Software Company, 10,001+ employeesDell EMC Unity
- Enables you to create multiple copies of any database.
- Data savings feature with compression.
- Integrity with VMWare, RHEL, Oracle.
- The best option is a midrange unified storage array in a customer environment.
- Some models support NMMe.
- Copy Data Management (iCDM), Data-At-Rest-Encryption (D@RE).
Information Technology Infrastructure Specialist - Storage Management
KyndrylArchitecture & Planning, 10,001+ employees
Cons
Dell EMC PowerScale (EMC Isilon)
- Some upgrades require the entire cluster to be rebooted simultaneously. In this day and age, that should not be necessary. This is my biggest disappointment with Isilon to date.
- When using multiple storage pools you have to be very careful with your capacity management. Filling up one pool can cause an overflow of data to a pool that is less performance driven. Do not underestimate your capacities or you will find yourself in a tight spot.
- Block size is almost always an issue with Isilon. It does not handle all types of data well. In many cases PACS and VNA data is best to be stored on a different storage platform that will utilize the capacity more efficiently that Isilon is capable of.
- Deduplication seems to be less efficient on Isilon than on other platforms for similar types of data.
Storage Engineer
Northeast Georgia Health SystemHospital & Health Care, 5001-10,000 employees
Dell EMC Unity
- Alerting: receiving an alert when an issue occurs. That is good to know. However, if the alert is cleared, or somehow no longer in alarm, no email is received. At times I will receive the email alert on weekends, not knowing if the issue is resolved or not until Monday when I can access the unit. I have learned in most instances, the alert is a false alarm, which could be a problem.
- The alerting itself is sometimes not clear. For example, it tells me the link is down, we reset the connection, the link is still down, a tech was dispatched, he troubleshot, and finally the alarm cleared. This incident took almost a week. It went back into alarm after he left, then suddenly it cleared on its own.

Verified User
Professional in Information Technology
Packaging and Containers Company, 1001-5000 employeesPricing Details
Dell EMC PowerScale (EMC Isilon)
General
Free Trial
—Free/Freemium Version
—Premium Consulting/Integration Services
—Entry-level set up fee?
No
Starting Price
—Dell EMC Unity
General
Free Trial
—Free/Freemium Version
—Premium Consulting/Integration Services
—Entry-level set up fee?
No
Starting Price
—Usability
Dell EMC PowerScale (EMC Isilon)
No score
No answers yet
No answers on this topic
Dell EMC Unity
Dell EMC Unity 7.0
Based on 3 answers
Very cumbersome compared to other vendors in the same marketplace.
Associate Engineer
Secure Meters LimitedUtilities, 1001-5000 employees
Support Rating
Dell EMC PowerScale (EMC Isilon)
No score
No answers yet
No answers on this topic
Dell EMC Unity
Dell EMC Unity 8.9
Based on 9 answers
Not only support for Unity, but for any Dell product, whether for companies or for the end consumer. Support is agile, helpful, and always focused on solving the problem. To date, there has been no problem that Dell's support has failed to resolve and help us with.
Coordenador de Infraestrutura, Redes e Telecomunicações
Câmara Municipal de CampinasGovernment Administration, 501-1000 employees
Alternatives Considered
Dell EMC PowerScale (EMC Isilon)
Raw disk space vs. logical disk space ratio was significantly better on the Isilon. Fast cache using SSD drives for faster searching is available on the Isilon but not available on the Overland solution. Isilon solution included faster backend switching between nodes.

Verified User
Engineer in Information Technology
Computer Software Company, 11-50 employeesDell EMC Unity
I was instructed to buy these arrays, but I was not given the opportunity to evaluate other arrays. We evaluated other products in the market that competed with Unity and found that the younger array built from scratch had far better features, software, and ease of use. The Unity system has a unique way of storing the data when compared with other systems.

Verified User
Executive in Information Technology
Information Technology & Services Company, 10,001+ employeesReturn on Investment
Dell EMC PowerScale (EMC Isilon)
- Isilon provides very high value for money
- Matches the performance and storage requirements of the arrays
- EMC provides very skillful and high response team in case of any issues in isilon
Senior Storage Administrator
Larson and Tourbo InfotechMedia Production, 5001-10,000 employees
Dell EMC Unity
- Less business downtime and reliability is a major business concern. DELL EMC UNITY addresses this concern well and provides robust storage.
- Investing in UNITY system is less expensive than all-flash storage systems.
- Managing and provisioning VMware disks became simpler from a single interface in the Vcenter
IT Project Manager
The George Washington UniversityHigher Education, 5001-10,000 employees