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Data Management Services

SRM Storage Resource Manager A high-level interface to a storage system.
RLS Replica Location Service The distributed service providing the mappings between GUIDs and SURLs. An RLS has two components: Local Replica Catalogs and Replica Location Indexes.
LRC Local Replica Catalog The catalog storing GUID to SURL mappings, along with SURL attributes for a given site, or a single Storage Resource Manager at a site. It only stores GUID to SURL mappings for SURLs that are actually located in the given site or SRM.
RLI Replica Location Index The catalog storing information about which Local Replica Catalogs have GUID to SURL mappings for a particular GUID. It thus provides the link between different LRCs, allowing for distributed indexing and querying of the Catalogs.
RMC Replica Metadata Catalog The catalog storing LFN aliases for GUID, as well as attributes on GUIDs and LFNs.
ROS Replica Optimization Service A service providing information to guide selection between replicas located at different sites. This is based on network information collected from available network monitors.


next up previous contents
Next: Data Naming Up: Glossary Previous: Glossary   Contents
2005-02-04