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 108 of 204 S2-PDGS-DC-040 The PDGS/DC function shall be able to retrieve autonomously data from all input electronic interfaces according to a well-defined configuration. S2-PDGS-DC-045 The PDGS/DC function shall be able to deliver autonomously data to all output electronic interfaces according to a well-defined configuration. S2-PDGS-DC-050 The PDGS/DC shall operate autonomously in a data-driven manner based on the detection of new data made available by other systems at the configured interface for circulation to another system's interface. S2-PDGS-DC-055 The PDGS/DC function shall allow the operator to interactively add / modify / delete the configuration of electronic input or output interfaces within or external to the PDGS via a HMI. S2-PDGS-DC-060 The PDGS/DC function shall allow associating access methods, protocols, polling frequencies, etc to each electronic interface by configuration. S2-PDGS-DC-065 The PDGS/DC function shall allow the operator to interactively add / modify / delete the configuration of circulation rules between electronic input and output interfaces via an HMI. S2-PDGS-DC-070 The PDGS/DC function shall be able by configuration to prevent the circulation of the same data twice between the same interfaces. Accordingly the DC function shall keep track of all the circulation operations performed. S2-PDGS-DC-075 The PDGS/DC function shall process autonomously the data from/to media interfaces limiting operator intervention to the sole initial media preparation (e.g. tape loading, disk connection, etc), media disposal (unloading, disconnection, etc) and shipment activities. S2-PDGS-DC-080 The PDGS/DC function shall be able to perform several media interface circulation operations on different media in parallel. 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 109 of 204 S2-PDGS-DC-085 Peer to peer media-circulation operations between PDGS/DC functions hosted at different sites shall be coordinated such that lost or partially/completely unreadable media can be automatically identified and requested back electronically between receiver and sender. S2-PDGS-DC-090 The PDGS/DC shall keep track of all files delivered to a given media interface volume to allow recovery circulations on contingency of the nominal circulations. S2-PDGS-DC-095 The PDGS/DC function shall make use of standard protocols such as SFTP, FTP, FTPS, SMTP, POP, HTTP, HTTPS, etc to perform data circulation operations according to the required interface mechanisms. S2-PDGS-DC-100 Electronic circulations shall make use of password-less authentication techniques, likely via encryption keys, when supported by the protocol. S2-PDGS-DC-105 The PDGS/DC function as part of the data circulation activities, shall allow on-the-fly simple file conversion/edition activities (e.g. renaming, textual transformation, compression, decompression, format conversion, etc). 5.9.2 PERFORMANCE REQUIREMENTS S2-PDGS-DC-110 The PDGS/DC function time lag for the start of the files circulation operations shall not exceed 1 minute from the sources availability. S2-PDGS-DC-115 The PDGS/DC function shall make effective use of the available network resources for its operations. S2-PDGS-DC-120 The PDGS/DC function shall introduce only negligible time overhead on the data circulation operations to media interfaces ensuring the available writing rate according to the device specifications. S2-PDGS-DC-125 The PDGS/DC function shall be able to support an overall average sustained electronic circulation throughput of 200 Mbps between geographically distributed sites plus 200 Mbps of internal traffic. 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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GSC Sentinel-2 PDGS SRD - emits - ESA

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