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. |