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In this paper we present a new storage architecture for clusters that creates a shared memory of disk storage that is uniformly accessible to all cluster clients, scales to large capacity, and provides very high performance and connectivity. The cluster structure resembles a symmetric multiprocessor (SMP) in that clients (processors) can access disk data(More)
Advancements in storage technology along with the fast deployment of high-speed networks has allowed the storage, transmission and manipulation of multimedia information such as text, graphics, still images, video and audio to be feasible. Our study focused on the performance of the mass storage system for a large-scale video-on-demand server. Different(More)
* Quality of Service (QoS) is crucial for certain applications such as multimedia. As the Object-based Storage Device (OSD) protocol emerges as the next generation storage technology, QoS provisioning for OSD-based systems has also received a great deal of attention. In this paper, we propose a QoS framework for OSD-based storage system that integrates both(More)
Obtaining consistent bandwidth with predictable la-tency from disk-based storage systems has proven difficult due to the storage system's inability to understand Quality of Service (QoS) requirements. In this paper, we present a feasibility study of QoS with the Object-based Storage Device (OSD) specification. We look at OSD's ability to provide QoS(More)
Ever since online digital storage devices were first introduced in the late 1950's and early 1960's, the various functions key to storing data on these devices have been slowly migrating into the devices themselves. Early disk drives would send analog signals from the read/write head to a physically separate box that would deserialize and frame data into(More)
The bandwidth performance of a Fibre Channel Arbitrated Loop (FCAL) is roughly defined to be 100 MegaBytes (10 6 bytes) per second. Furthermore, FCAL is capable of a theoretical peak of 40,000 I/O operations (transactions) per second., These performance levels, however, are largely not realized by the applications that use Fibre Channel as an interface to(More)
—In this paper we look at the performance characteristics of three tools used to move large data sets over dedicated long distance networking infrastructure. Although performance studies of wide area networks have been a frequent topic of interest, performance analyses have tended to focus on network latency characteristics and peak throughput using network(More)
The InTENsity PowerWall is a display system used for high-resolution visualization of very large volumetric data sets. The display is linked to two separate computing environments consisting of more than a dozen computer systems. Linking these systems is a common shared storage subsystem that allows a great deal of flexibility in the way visualization data(More)
—In this project we look at the performance characteristics of three tools used to move large data sets over dedicated long distance networking infrastructure. Although performance studies of wide area networks have been a frequent topic of interest, performance analyses have tended to focus on network latency characteristics and peak throughput using(More)