Dell PowerScale (Isilon) vs Panasas ActiveStor comparison

Dell EMC PowerScale (Isilon) storage solutions are designed to help manage data for enterprises of all types. Dell PowerScale systems are simple to install, manage, and scale to virtually any size and include a choice of all-flash, hybrid, or archive nodes. Dell PowerScale solutions stay flexible and reliable no matter how much storage capacity is added, how much performance is required, or how business needs change in the future.

With Dell PowerScale, your data lake always stays simple to manage, simple to grow, simple to protect, and simple enough to handle the most demanding current and future workloads.

Ideal for companies of any size, from small enterprises to multi-national ones, Dell PowerScale storage provides secure collaboration, modular scalability, flexible consumption models, and easy cloud integrations, all with management tools spanning multiple platforms.

Key Benefits of Dell EMC PowerScale Storage

• Centralized management: Manage your storage infrastructure from a single unified platform.
  
  
• Data protection: Dell PowerScale offers security, data protection and replication tools. Back up and protect your data from cyber-attacks with an integrated ransomware defense system.
  
  
• Artificial intelligence: PowerScale is the foundation for building an integrated and optimized IT infrastructure for AI projects, from concept to production.
  
  
• Cloud support: Store and manage your data on the cloud and move data between your data center and the cloud. Dell PowerScale runs data-intensive cloud workloads with no outbound traffic costs.
  
  
• Long-term storage: Dell PowerScale offers highly efficient and resilient active archive storage or long-term data retention for large-scale data archives. With the proven scalability architecture of PowerScale, you can meet your growing archiving demands. Dell PowerScale has a wide variety of enterprise-grade data protection and security options to keep your archived data safe.

Reviews from Real Users

Dell EMC PowerScale storage stands out among its competitors for a number of reasons. Two major ones are its scalability capabilities and its user-friendly centralized management system.

Rachel B., a chief operations officer & acting CFO at Like a Photon, writes, "PowerScale allows us to manage storage without managing RAID groups or migrating volumes between controllers. It has really simplified things. We're not having to worry about the underlying infrastructure. That takes care of itself. We just worry about the data. It's really easy for deploying and managing storage at the petabyte scale."

Keith B., the director of IT at NatureFresh Farms, writes, "The single pane of glass for both IT and for the end-user is a valuable feature. On the IT side, I can actually control where things are stored, whether something is stored on solid-state drives or spinning drives... The single pane of glass makes it very easy to use and very easy to understand. We started at 100 terabytes, and we moved to 250 and it still feels like the exact same system and we're able to move data as needed."

In our most recent product, the ActiveStor Ultra, Panasas has developed a new approach called Dynamic Data Acceleration Technology. It uses a carefully balanced set of HDDs, SATA SSD, NVMe SSD, NVDIMM, and DRAM to provide a combination of excellent performance and low cost per terabyte.

• HDDs will provide high bandwidth data storage if they are never asked to store anything small and only asked to do large sequential transfers. Therefore, we only store large Component Objects on our low-cost HDDs.

• SATA SSDs provide cost-effective and highbandwidth storage as a result of not having any seek times, so that’s where we keep our small Component Objects.

• NVMe SSDs are built for very low latency accesses, so we store all our metadata in a database and keep that database on an NVMe SSD. Metadata accesses are very sensitive to latency, whether it is POSIX metadata for the files being stored or metadata for the internal operations of the OSD.

• An NVDIMM (a storage class memory device) is the lowest latency type of persistent storage device available, and we use one to store our transaction logs: user data and metadata being written by the application to the OSD, plus our internal metadata. That allows PanFS to provide very low latency commits back to the application.

• We use the DRAM in each OSD as an extremely low latency cache of the most recently read or written data and metadata.

To gain the most benefit from the SATA SSD’s performance, we try to keep the SATA SSD about 80% full. If it falls below that, we will (transparently and in the background) pick the smallest Component Objects in the HDD pool and move them to the SSD until it is about 80% full. If the SSD is too full, we will move the largest Component Objects on the SSD to the HDD pool. Every ActiveStor Ultra Storage Node performs this optimization independently and continuously. It’s easy for an ActiveStor Ultra to pick which Component Objects to move, it just needs to look in its local NVMe-based database.