GSC Sentinel-2 PDGS SRD - emits - ESA

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GSC Sentinel-2 PDGS SRD Issue 1 Revision 2 (draft) - 25.07.2010 GMES-GSEG-EOPG-RD-09-0028 page 120 of 204 S2-PDGS-DAX-090 The PDGS/DAX function shall minimize total backups size making use of incremental backup strategies. S2-PDGS-DAX-095 The PDGS/DAX function shall be able to backup, export and restore incremental data indexes without interruptions of its nominal operations. S2-PDGS-DAX-100 The PDGS/DAX function shall provide the necessary functionality to carry out nominal operations from a master instance seconded by a second geographically distributed instance operated in hot-redundancy to the master instance for location query processing and data supply autonomous operations towards other PDGS functions and external interfaces. S2-PDGS-DAX-105 The PDGX/DAX function shall be able to systematically ingest unavailability reports provided by any AI function instance stating the temporary unavailability or return to operations of its data access capabilities. S2-PDGS-DAX-110 The PDGS/DAX function shall consistently report an error in response to data location queries for unavailable items. S2-PDGS-DAX-115 The PDGX/DAX function shall allow the operator to manually change the temporary availability status of any archive of the federated PDGS. S2-PDGS-DAX-120 The PDGS/DAX function shall ignore the master index records corresponding to data held in archive instances temporarily unavailable when processing data location queries. In case a queried item is held in unavailable archives only, the PDGS/DAX function shall report an error stating the temporary unavailability of the data. S2-PDGS-DAX-125 The PDGS/DAX function shall allow the operator to set any federated PDGS archive from a temporary unavailability status to a permanent unavailability status. Consequently it shall mirror the unavailability of all its previous contents in the master index and trigger as relevant the catalogue updates to the MMUS and OLIB functions. ESA UNCLASSIFIED – For Official Use © ESA The copyright of this document is the property of ESA. It is supplied in confidence and shall not be reproduced, copied or communicated to any third party without written permission from ESA.
GSC Sentinel-2 PDGS SRD Issue 1 Revision 2 (draft) - 25.07.2010 GMES-GSEG-EOPG-RD-09-0028 page 121 of 204 5.12.2 PERFORMANCE REQUIREMENTS S2-PDGS-DAX-130 The PDGS/DAX function shall be able to perform the ingestion of archive reports for new MSI product granules and the generation of the corresponding catalogue updates and CDS coverage reports at a sustained rate of no less than four granules per second in average. S2-PDGS-DAX-135 The PDGS/DAX function shall complete every product location query within less than half a second. S2-PDGS-DAX-140 The PDGS/DAX function shall support product location queries at a rate of one Level-1B or Level-1C square product per second, considering a square product coverage of about 300km x 300km. S2-PDGS-DAX-145 The PDGS/DAX function shall be able to complete in less than 10 seconds the parallel processing of 10 simultaneous data location requests corresponding to all Level-1C products of the Sentinel-2 constellation covering Europe during one month. S2-PDGS-DAX-150 The number of simultaneous data location requests which can be supported in parallel with the defined performance shall be linearly scalable with hardware. 5.12.3 OPERATIONAL REQUIREMENTS S2-PDGS-DAX-155 The PDGS/DAX function shall be deployed and operated locally in the PDMC and in one PAC as hot-redundant backup. S2-PDGS-DAX-160 The PDGS/DAX function shall supply status information over all its processes and resources (i.e. log information, disk volumes usage, alarms, etc.) in real-time via the M&C function. S2-PDGS-DAX-165 The PDGS/DAX function shall systematically ingest all archive update reports provided by all geographically distributed AI function instances in a data-driven manner. ESA UNCLASSIFIED – For Official Use © ESA The copyright of this document is the property of ESA. It is supplied in confidence and shall not be reproduced, copied or communicated to any third party without written permission from ESA.
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