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 62 of 204 5.1.6 RAMS REQUIREMENTS S2-PDGS-SYS-745 The PDGS shall provide functions to support the maintenance and configuration control of all PDGS software and associated documentation over its operational lifetime. S2-PDGS-SYS-750 The PDGS shall be able to deliver all generated Sentinel-2 products according to the expected quality requirements and within the required timeliness categories with a probability better than 0.990 (99.0%) as computed over one month time window and assuming a degradation of such figure for no more than one day over the operational mission life-time. S2-PDGS-SYS-755 The PDGS shall ensure the reliability of all the data transfer operations ensuring that no data is definitively lost in case of temporary communication problems, moreover the data transfer operations are resumed as soon as possible once the communication problems are disappeared. S2-PDGS-SYS-760 The downtime for PDGS non-critical functions due the addition of one Sentinel-2 satellite shall be less than 24 hours. S2-PDGS-SYS-765 The downtime for PDGS critical functions due the addition of one Sentinel-2 satellite shall be less than 100 minutes. S2-PDGS-SYS-770 The PDGS software maintenance shall include the following, as a minimum: the capability to retrieve from configuration control any PDGS SW item the capability to put under configuration control updated SW items compiling, linking, debugging capabilities for all source code and SW libraries S2-PDGS-SYS-775 The PDGS shall support re-start of operational functions after failure in the following modes: resume operations at the step where failure occurred re-start operations from a previously completed step before the failure re-start operations from a configured reset step 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 63 of 204 S2-PDGS-SYS-780 The PDGS operational baseline documentation (including technical and mission documentation) shall be kept under configuration control. S2-PDGS-SYS-785 A failure in one of the PDGS composing element shall not cause failure of an interfacing element. S2-PDGS-SYS-790 No single failure/mistake of PDGS operator shall lead to critical consequences. S2-PDGS-SYS-795 The PDGS unmanned services shall be nominally available twenty-four hours/day, seven days/week. S2-PDGS-SYS-800 It shall be possible for each PDGS element to be maintained once related operations have been started without necessitating a shutdown of the complete element. S2-PDGS-SYS-805 It shall be possible to upgrade the PDGS configuration without affecting the currently ongoing PDGS operations and performance levels. S2-PDGS-SYS-810 It shall be possible to upgrade operational PDGS facilities through configuration and hardware update without any changes to the SW code or code re-compilation and without any PDGS critical operation interruption. 5.1.7 DESIGN & DEVELOPMENT REQUIREMENTS S2-PDGS-SYS-815 The PDGS design shall derive from the PDGS functional and physical models described in the [OCD]. S2-PDGS-SYS-820 The PDGS shall be able to support independent elements and PDGS centre-level tests, end-to-end tests, and integration and verification activities through a dedicated Reference- Platform function. 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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S2-PDGS-NET-065 The DCN shall provi
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GSC Sentinel-2 PDGS SRD - emits - ESA

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