Speaker
Timur Perelmutov
(FERMI NATIONAL ACCELERATOR LABORATORY)
Description
dCache collaboration actively works on the implementation and improvement of the
features and the grid support of dCache storage. It has delivered Storage Resource
Managers (SRM) interface, GridFtp server, Resilient Manager and Interactive Web
Monitoring tools. SRMs are middleware components whose function is to provide dynamic
space allocation and file management of shared storage components on the Grid. SRMs
support protocol negotiation and a reliable replication mechanism. The SRM standard
allows independent institutions to implement their own SRMs, thus allowing for a
uniform access to heterogeneous storage elements. Fermilab has implemented SRM
interface v1.1 for dCache and now actively pursues SRM v2.1 implementation. GridFtp
is a standard grid data transfer protocol, which supports GSI authentication, control
channel encryption, data channel authentication, and extended block mode parallel
transfers. We have implemented and continue to improve the GridFtp server in dCache.
Resilient Manager is a top-level service in dCache, which is used to create a more
reliable and highly available data storage out of the commodity disk nodes, which are
part of dCache. New interactive web-based monitoring tools will dramatically improve
the understanding of a complex distributed system like dCache by both administrators
and users. The monitoring includes a variety of plots and bar diagrams graphically
representing the state and history of the dCache system. I will discuss these
features and the benefits derived from them to Grid Storage Community.
Author
Timur Perelmutov
(FERMI NATIONAL ACCELERATOR LABORATORY)
