We have developed Ceph, a distributed file system that provides excellent performance,
reliability, and scalability. Ceph maximizes the separation between data and metadata …

Data deduplication is an essential and critical component of backup systems. Essential,
because it reduces storage space requirements, and critical, because the performance of …

Emerging large-scale distributed storage systems are faced with the task of distributing
petabytes of data among tens or hundreds of thousands of storage devices. Such systems …

As the world moves to digital storage for archival purposes, there is an increasing demand
for systems that can provide secure data storage in a cost-effective manner. By identifying …

In petabyte-scale distributed file systems that decouple read and write from metadata
operations, behavior of the metadata server cluster will be critical to overall system …

Large archival storage systems experience long periods of idleness broken up by rare data
accesses. In such systems, disks may remain powered off for long periods of time. These …

Deduplication has been widely used in disk-based secondary storage systems to improve
space efficiency. However, there are two challenges facing scalable high-throughput …

System designers have long sought to improve the performance of file systems, which have
proved critical to the overall performance of an exceedingly broad class of applications. The …

Storage clusters consisting of thousands of disk drives are now being used both for their
large capacity and high throughput. However, their reliability is far worse than that of smaller …

Previous approaches to RAID scaling either require a very large amount of data to be
migrated, or cannot tolerate multiple disk additions without resulting in disk imbalance. In …