The dCache project provides open source storage software deployed internationally to satisfy ever more demanding scientific storage requirements. Its multifaceted approach provides an integrated way of supporting different use cases with the same storage, from high throughput data ingest, through wide access and easy integration with existing systems. In supporting new communities, such as photon science and microbiology, dCache is evolving to provide new features and access to new technologies. In this paper, we describe some of these recent features that facilitate the use of storage to maximise the gain from stored data, including quality-of-service management, support for distributed and federated systems, and improvements with support for parallel NFS (pNFS).

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The dCache project provides open-source storage software deployed internationally to satisfy ever more demanding scientific storage requirements. Its multifaceted approach provides an integrated way of supporting different use-cases with the same storage, from high throughput data ingest, through wide access and easy integration with existing systems. In this paper, we describe some of the recent features that facilitate the use of storage to maximise the gain from stored data, including quality-of-service management, heterogeneous systems-both through integrated tertiary storage support and geographical locality-the parallel NFS (pNFS) extension, and innovative delegated authorisation schemes.

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