A project on high performance I/0 subsystems
ACM SIGARCH Computer Architecture News
A high performance multi-structured file system design
SOSP '91 Proceedings of the thirteenth ACM symposium on Operating systems principles
| Hi-index | 0.00 |
Because of the mismatch between I/O and CPU speeds, high performance computers have long been forced to confront the fundamental I/O bottleneck. As processing power and memory size continue to grow rapidly for micro and mini computers, they too will become I/O limited. A number of hardware and software approaches, such as parallel read-out disks, expanded storage (e.g. solid state disks), and disk striping, have been used to increase I/O bandwidth and thus narrow the CPU-I/O performance gap. In addition, new developments driven by advances in small diameter (i.e., 5.25" and 3.5" disk drives, promise very high I/O bandwidth if large numbers of devices can be organized into arrays of disks. In this paper, we shall review the state of the art in disk devices and I/O controllers, and will describe new approaches for very high performance I/O based on redundant arrays of inexpensive disks (RAIDS).