The Ohio Society of CPAs
The demand for scalable I/O continues to grow rapidly as computer clusters keep growing. Much of the research in storage systems has been focused on improving the scale and performance of I/O throughput. Scalable file systems do a good job of scaling large file access bandwidth by striping or sharing I/O resources across many servers or disks. However, the same cannot be said about scaling file metadata operation rates. Most existing parallel filesystems choose to concentrate all the metadata processing load on a single server. This centralized processing can guarantee the correctness, but it severely hampers scalability.