The Disk Pool Manager (DPM) is a lightweight storage solution for grid sites. It offers a simple way to create a disk-based grid storage element and supports relevant protocols (SRM, gridFTP, RFIO) for file management and access. It focus on manageability (ease of installation, configuration, low effort of maintenance), while providing all required functionality for a grid storage solution (support for multiple disk server nodes, different space types, multiple file replicas in disk pools). It is installed in 185 different sites, with more than 200 instances running as of today .
As an effort to move towards standard protocols that removes the need of special client tools, DPM started offering a WebDAV/HTTP interface, facilitating the access to grid storage via easily available clients as web browsers, or WebDAV clients. However, the current pure HTTP implementation only offers a primitive read-only interface via browsers, which limits the use cases to the mere navigation of directories and download of files. Attracting less technical users from non HEP (High Energy Physics) communities has been an objective for the last years. Precisely this partially triggered the interest on the HTTP protocol, and now follows naturally with a more intuitive, easy to use and user appealing graphic user interface. This project will provide a web interface that will integrate with the rest of the software stack, providing an easy and intuitive tool to both technical and nontechnical users to manage their data from and into the grid. The purpose is not to create a cloud storage system copycat, but to get advantage of the features that DPM grid system already offers (performance, different accessing protocols, data replication, etc.) adding the ease of use of the increasingly widespread cloud storage systems like Dropbox, OneDrive or Google Drive.
As the rest of the software involved in DPM the project will be developed under the Apache License version 2.0 .
 WLCG data management stats gstat-wlcg.cern.ch/apps/gt/dm
 DPM HTTP/WebDAV interface svnweb.cern.ch/trac/lcgdm/wiki/Dpm/WebDAV
 DPM: Future Proof Storage iopscience.iop.org/1742-6596/396/3/032015
 Web enabled data management with DPM & LFC iopscience.iop.org/1742-6596/396/5/052006
 CERN LCG File Catalog indico.cern.ch/event/a052961/contribution/s1t7/material/0/1.pdf
 W3 Consortium HTML specifications w3.org/TR/html51
 W3 Consortium CSS specifications w3.org/TR/css-2010
 Apache License 2.0 apache.org/licenses/LICENSE-2.0.html