{"id":2296,"date":"2025-12-11T05:49:23","date_gmt":"2025-12-11T04:49:23","guid":{"rendered":"https:\/\/www.syredis.fr\/?page_id=2296"},"modified":"2026-05-14T10:47:28","modified_gmt":"2026-05-14T08:47:28","slug":"2296-2","status":"publish","type":"page","link":"https:\/\/www.syredis.fr\/?page_id=2296","title":{"rendered":"DRP_BCP_Fra"},"content":{"rendered":"

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Pourquoi mettre en place un PCA\/PRA ?<\/span><\/h4>\n\t\t\t\t\t\t

Maintenir les services citoyens (\u00e9tat civil, restauration scolaire, aide sociale, eau, d\u00e9chets, urbanisme\u2026)
\u2714 Continuit\u00e9 des services aux citoyens
<\/strong>\u00c9tat civil, scolaire, social, eau, d\u00e9chets\u2026 m\u00eame en cas de crise.<\/p>\n

\u2714 R\u00e9duction des impacts<\/strong>
Moins de pertes financi\u00e8res, juridiques et d\u2019image.<\/p>\n

\u2714 Protection face aux risques majeurs<\/strong>
Cyberattaques, pannes, al\u00e9as climatiques, erreurs humaines.<\/p>\n

\u2714 Conformit\u00e9 & bonnes pratiques<\/strong>
Alignement ANSSI, RGPD et normes de r\u00e9silience.<\/p><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<\/div>

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D\u00e9marche en 6 \u00e9tapes<\/span><\/h4>\n\t\t\t\t\t\t

\u2705 Gouvernance & p\u00e9rim\u00e8tre \u2014 Sponsor, pilotes m\u00e9tiers, DPO, RSSI, DSI.
\u2705 BIA (Business Impact Analysis) \u2014 MTPD, d\u00e9pendances, priorit\u00e9s de reprise.
\u2705 Strat\u00e9gie PCA, organisation, sites de repli, t\u00e9l\u00e9travail de crise, proc\u00e9dures.
\u2705 Strat\u00e9gie PRA, cibles RPO\/RTO, niveaux de service, architecture.
\u2705 Mise en \u0153uvre, sauvegardes immuables, r\u00e9plication, automatisation, runbooks.
\u2705 Test & am\u00e9lioration continue \u2014 exercices, retours d\u2019exp\u00e9rience, KPI.<\/p><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>

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D\u00e9finir RPO & RTO<\/span><\/h4>\n\t\t\t\t\t\t

RPO : perte de donn\u00e9es maximale acceptable.
RTO : d\u00e9lai de r\u00e9tablissement maximal.<\/p>\n

Fixer des cibles r\u00e9alistes par niveau de criticit\u00e9, valid\u00e9es par les m\u00e9tiers.<\/p>\n

    \n
  • \n
      \n
    • Aligner avec la MTPD (Maximum Tolerable Period of Disruption)<\/li>\n
    • Mesurer r\u00e9guli\u00e8rement les RPO\/RTO r\u00e9els lors des tests<\/li>\n
    • Arbitrer co\u00fbts vs. niveaux de service<\/li>\n<\/ul>\n<\/li>\n<\/ul><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<\/div>
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      Calcul rapide du budget d\u2019arr\u00eat<\/span><\/h4>\n\t\t\t\t\t\t

      Une interruption de service peut repr\u00e9senter bien plus qu\u2019un simple arr\u00eat technique :<\/p>\n

        \n
      • \n
          \n
        • Co\u00fbt\/heure \u00d7 RTO cible<\/li>\n
        • Co\u00fbt de re-saisie \u00d7 nombre de dossiers<\/li>\n
        • Valeur des donn\u00e9es non recouvrables (RPO)<\/li>\n<\/ul>\n<\/li>\n<\/ul><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>
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          Obligations & r\u00e9f\u00e9rentiels<\/span><\/h4>\n\t\t\t\t\t\t
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            \n
          • \n
              \n
            • Code g\u00e9n\u00e9ral des collectivit\u00e9s, continuit\u00e9 du service public.<\/li>\n
            • RGPD, disponibilit\u00e9 et int\u00e9grit\u00e9 des donn\u00e9es personnelles.<\/li>\n
            • RGS \/ PSSI-E \/ ANSSI, bonnes pratiques de s\u00e9curit\u00e9 du SI.<\/li>\n
            • Sch\u00e9ma Directeur \/ PCA communal,\u00a0 articulation avec la gestion de crise.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<\/div>
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              Livrables attendus<\/span><\/h4>\n\t\t\t\t\t\t
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              • \n
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                • Cartographie des processus et priorisation (MTPD)<\/li>\n
                • Analyse d\u2019impact (BIA) & Analyse de risques<\/li>\n
                • Strat\u00e9gie de continuit\u00e9 & sc\u00e9narios de sinistre<\/li>\n
                • Plan d\u2019actions, proc\u00e9dures, fiches r\u00e9flexes et annuaires<\/li>\n
                • Rapports de tests & mise \u00e0 jour annuelle<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>
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                  Plan de tests<\/span><\/h4>\n\t\t\t\t\t\t
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                  • \n
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                    • Test documentaire (revue des proc\u00e9dures)<\/li>\n
                    • Test technique (restauration, bascule applicative)<\/li>\n
                    • Exercice de crise (PC de crise, communication)<\/li>\n
                    • Chaos engineering (fen\u00eatre contr\u00f4l\u00e9e)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<\/div>
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                      Fr\u00e9quence conseill\u00e9e<\/span><\/h4>\n\t\t\t\t\t\t
                      \n
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                      • \n
                          \n
                        • Niveau 1 : trimestriel<\/li>\n
                        • Niveau 2 : semestriel<\/li>\n
                        • Niveau 3 : annuel<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>
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                          Architecture de reprise<\/p><\/div>\n\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>

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                          Composants<\/span><\/h4>\n\t\t\t\t\t\t
                            \n
                          • \n
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                            • R\u00e9plication des VM\/bases (synchrones\/asynchrones)<\/li>\n
                            • Sauvegardes immuables et chiffr\u00e9es (WORM)<\/li>\n
                            • Stockage objet \u00ab air\u2011gap \u00bb \/ cloud public<\/li>\n
                            • Site de secours (cloud, datacenter interco, autre collectivit\u00e9)<\/li>\n
                            • Services r\u00e9seau intelligents<\/li>\n
                            • DNS dynamique, load balancer, bastion d\u2019admin<\/li>\n
                            • Scripts\/runbooks d\u2019orchestration de bascule<\/li>\n
                            • Tests de bascule programm\u00e9s et non perturbants<\/li>\n<\/ul>\n<\/li>\n<\/ul><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<\/div>
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                              Niveaux de service<\/h2>\n
                              \n
                              Catégorie
                              <\/div><\/div>\n
                              Niveau 1 Critique
                              <\/div><\/div>\n
                              Niveau 2 Important
                              <\/div><\/div>\n
                              Niveau 3 Standard<\/div><\/div>\n<\/div>\n <\/div>
                              \n
                              Exemples
                              <\/div><\/div>\n
                              État civil, paie, secours
                              <\/div><\/div>\n
                              Affaires scolaires, cantine
                              <\/div><\/div>\n
                              Intranet, GED<\/div><\/div>\n<\/div>\n <\/div>
                              \n
                              <\/div><\/div>\n
                              <\/div><\/div>\n
                              <\/div><\/div>\n
                              <\/div><\/div>\n<\/div>\n <\/div>
                              \n
                              <\/div><\/div>\n
                              <\/div><\/div>\n
                              <\/div><\/div>\n
                              <\/div><\/div>\n<\/div>\n <\/div>\n <\/div>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-2296","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.syredis.fr\/index.php?rest_route=\/wp\/v2\/pages\/2296","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.syredis.fr\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.syredis.fr\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.syredis.fr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.syredis.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2296"}],"version-history":[{"count":21,"href":"https:\/\/www.syredis.fr\/index.php?rest_route=\/wp\/v2\/pages\/2296\/revisions"}],"predecessor-version":[{"id":3097,"href":"https:\/\/www.syredis.fr\/index.php?rest_route=\/wp\/v2\/pages\/2296\/revisions\/3097"}],"wp:attachment":[{"href":"https:\/\/www.syredis.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2296"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}