As the size and performance requirements of storage systems have increased, file system designers have looked to new architectures to facilitate system scalability. Ceph is a fully open source distributed object store, network block device, and file system designed for reliability, performance, and scalability from terabytes to exabytes. Fault tolerance is a key challenge for both system design and operations. Ceph is designed to be both highly available and elastic. In large clusters, disk, host, and even network failures are the norm rather than the exception, hardware is heterogeneous and incrementally deployed or deprovisioned, and availability must be continuous. This talk will describe the Ceph architecture and the impact it has on system operations, including failure management, monitoring, and provisioning.
Sage Weil designed Ceph as part of his Ph.D. research in Storage Systems at the University of California, Santa Cruz. Since graduating, he has continued to refine the system with the goal of providing a stable next generation distributed file system for Linux. Prior to his graduate work, he co-founded New Dream Network, the company behind DreamHost.com, a Los Angeles-based Web hosting company.
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