Dell Technologies presents Dell PowerScale (replacing EMC Isilon) as a scale-out NAS solution and server technology that provides the flexibility of a software-defined architecture with accelerated hardware innovations to harness the value of data.
Isilon Systems was acquired by EMC in 2010; some EMC Isilon NAS appliances are still available and supported under the PowerScale brand.
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QNAP NAS
Score 9.1 out of 10
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QNAP offers a wide array of network-attached storage units for SMBs, home, and enterprise.
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.
I've been using QNAP NAS for a while now, and it's been great for my home setup. The interface is pretty user-friendly, even for someone who's not super techy, but there are plenty of advanced features to dig into if you need them. Setup was straightforward, and I love how easy it is to access my files remotely. The apps work well, and I've had no major issues with performance. It's been reliable, and I feel like my data is secure. Overall, it's just a solid piece of gear that does exactly what I need. Highly recommend! 10/10 from me!
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.
QNAP NAS's usability is excellent, making it accessible to both beginners and more experienced users. The setup process is straightforward, with clear instructions that guide you through everything. The user interface is intuitive, allowing you to navigate easily between settings, apps, and features. Even with its powerful functionality, such as remote access and advanced file management, it doesn’t feel overwhelming. The mobile apps make it convenient to access files on the go, and everything integrates smoothly. Whether you need basic storage or more advanced features, QNAP balances ease of use with powerful capabilities, making it a highly user-friendly NAS option.
Customer support is effective once communication is established. A technical support person is required on both sides. The support is extremely knowledgeable and provides detailed support and explanation to any issues, as well as some will provide recommendations to the business needs as there are many different technologies or methods depending on what the business is trying to achieve.
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.
