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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Qumulo Core
Score 7.6 out of 10
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Qumulo Core Hybrid Cloud File Storage delivers real-time visibility, scale and control of data across on-prem and cloud. Qumulo customers can manage storage at a granular level, programmatically configuring and managing usage, capacity and performance.
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.
Qumulo is great for media and entertainment companies, that need simple and easy management of a NAS. The product can also scale and be sized to larger shops too. The support that comes with it also can act as an extension of internal IT. Their support is always watching the box when it phones home with hardware errors or if it would go offline. Qumulo is not initially set up well-running virtual workloads, while Vmware supports NFS, some settings need to be adjusted on Qumulo to allow for upgrades to happen while virtual machines are running
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.
Their Slack-based support is like nothing I have experienced. They are fast, helpful, and willing to go the extra mile, even when an issue is not clearly their's to solve. They are committed to your success. The engineers on the Slack channel are oftentimes the engineers that programmed the very same feature you are asking questions about or having issues with.
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.
Qumulo was not the least expensive but we were blown away by support offered and pre-sales support to ensure questions were answered. Our main challenges were mixed end-user platforms and a diverse set of use cases on those end-user computers. Having the dual access to volumes, over NFS and SMB, helps us greatly in this area.
