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The Isilon OneFS operating system provides the intelligence behind all Isilon scale-out storage solutions. As part of a storage solution designed for exceptional ease of use, the OneFS operating system can help you accelerate processes and workflows while providing the highest levels of data protection and scaling easily to handle massive growth.
The following figure shows the components of the OneFS operating system:
The OneFS operating system works with the Isilon scale-out NAS nodes, which are referred to as a “cluster.” A single Isilon cluster consists of multiple nodes, storage media, and rack-mountable enterprise appliances containing memory, CPU, networking, Ethernet or low-latency InfiniBand interconnects, and disk controllers. Each node in the distributed cluster has compute and storage or capacity capabilities.
With the Isilon F800 storage system, a single chassis of four nodes in a 4U form factor is required to create a cluster, which currently scales up to 144 nodes. Each node or chassis that is added to a cluster increases aggregate disk, cache, CPU, and network capacity. OneFS uses each of the hardware building blocks so that the whole becomes greater than the sum of the parts. The RAM is grouped into a single coherent cache, enabling I/O on any part of the cluster to benefit from data cached anywhere. A file system journal ensures that writes are safe across power failures. Spindles and CPU are combined to increase throughput, capacity, and IOPS as the cluster grows for access to one file or to multiple files.