A block-level continuous data protection (CDP) system logs every disk block update from an application server (e.g., a file or DBMS server) to a storage system so that any disk u...
Optimistically replicated systems provide highly available data even when communication between data replicas is unreliable or unavailable. The high availability comes at the cost...
In this paper, we propose a modified parallel virtual file system that provides snapshot functionality. Because typical file systems are exposed to various failures, taking a s...
As distributed computing systems grow in size, complexity and variety of application, the problem of protecting sensitive data from unauthorized disclosure and tampering becomes i...
Several recent studies have pointed out that file I/Os can be a major performance bottleneck for some large Web servers. Large I/O buffer caches often do not work effectively for ...