Speaker
Paul Miller
(dCache.org/DESY)
Description
For more than a decade, dCache now accompanies high energy physics and other communities in their needs of storing, transferring and accessing their ever increasing amount of data. Having started with the focus on large tape archives in front of relatively small disk caches (hence the name) the computing models, the required access protocols as well as the underlying storage and hardware technologies have permanently changed and have been adopted by dCache when needed. Only recently dCache introduced WebDAV as well as the NFS 4.1/pNFS protocols to stay competitive with industry standards and solutions allowing dCache to grow into young scientific communities. But the process continues. dCache is now planing to take advantage of the improved speed of solid state disks, however at the same time realizing that spinning disks will be around for a significant number of years from now, so that both technologies need to coexist in a single storage element with all necessary file movements on demand. Furthermore, with Hadoop FS, easy to maintain backend storage becomes available, which doesn't offer the well known file system semantics, so that the integration into dCache will become a challenge, the dCache developers are currently facing when adding HFS into the dCache supported set of backend storage technologies. This presentation will give a short summary of what dCache is offering in the recently published 1.9.12 Golden Release and what our milestones are for the next 12 months.
