{"id":5884,"date":"2014-10-22T08:00:24","date_gmt":"2014-10-22T07:00:24","guid":{"rendered":"http:\/\/www.solucominsight.fr\/?p=5884"},"modified":"2015-01-21T09:50:58","modified_gmt":"2015-01-21T08:50:58","slug":"infrastructures-convergees-1er-pas-vers-cloud-ready","status":"publish","type":"post","link":"https:\/\/www.riskinsight-wavestone.com\/en\/2014\/10\/infrastructures-convergees-1er-pas-vers-cloud-ready\/","title":{"rendered":"Infrastructures converg\u00e9es : un 1er pas vers un SI Cloud-Ready ?"},"content":{"rendered":"

Dans un pr\u00e9c\u00e9dent article<\/a>, nous expliquions les tenants et aboutissants des infrastructures converg\u00e9es. Mais les infrastructures converg\u00e9es sont-elles \u00a0une r\u00e9elle innovation ou un effet de mode visant \u00e0 renforcer un discours commercial ? Un constat s\u2019impose\u00a0: de plus en plus de constructeurs proposent ce type de solutions. VCE propose \u00a0aujourd\u2019hui l\u2019offre la plus mature, ce qui n\u2019emp\u00eachent pas se concurrents d\u2019enrichir \u00e9galement \u00a0leur offre\u00a0: on peut notamment citerIBM et ses Flex System, HP et ses Converged System… On observe \u00e9galement l\u2019apparition de nouveaux acteurs (Nutanix, SimpliVity) proposant des solutions d\u2019infrastructures d\u00eetes \u00ab\u00a0Hyperconverg\u00e9s\u00a0\u00bb. Quels sont les gains que l\u2019on peut en attendre ? Existe-t-il des cas d\u2019usages pertinents justifiant ces nouveaux investissements ?<\/span><\/p>\n

Un changement de mod\u00e8le d\u2019exploitation pour industrialiser et s\u00e9curiser le SI<\/h2>\n

Les infrastructures converg\u00e9es permettent-elles de gagner de l\u2019argent\u00a0? La r\u00e9ponse n\u2019est pas \u00e9vidente. Bien souvent le prix de ce nouveau bloc d\u2019infrastructure est plus \u00e9lev\u00e9 que la somme de chaque \u00e9l\u00e9ment qui le compose. Mais alors comment faire des \u00e9conomies avec un produit qui co\u00fbte plus cher\u00a0? Tout simplement parce que le gain promis par les fournisseurs d\u2019infrastructures converg\u00e9es ne s\u2019appliquent pas aux d\u00e9penses d\u2019investissement (CAPEX) mais aux d\u00e9penses d\u2019exploitation (OPEX).<\/p>\n

La mani\u00e8re d\u2019op\u00e9rer ces infrastructures est diff\u00e9rente et facilite leur administration et leur exploitation dans le temps.<\/b> En effet, la matrice de compatibilit\u00e9 des composants garantie par le fournisseur et le processus de validation en usine permettent de s\u00e9curiser et de faciliter les projets de mise \u00e0 jour et d\u2019int\u00e9gration des \u00e9quipements. Cela favorise naturellement le maintien en conditions op\u00e9rationnelles des infrastructures et permet d\u2019obtenir un gain en co\u00fbts r\u00e9currents.<\/p>\n

Consid\u00e9rer un bloc d\u2019infrastructures converg\u00e9es comme une brique d\u2019infrastructure \u00e9l\u00e9mentaire permet de faciliter la gestion du datacenter<\/i> et du processus de capacity planning<\/i>.<\/b> De fait, il est important de standardiser une configuration compl\u00e8te de bloc, utilisant l\u2019int\u00e9gralit\u00e9 des emplacements disponibles et d\u00e9finissant l\u2019ensemble des composants. Il est en effet essentiel de favoriser la scalabilit\u00e9 horizontale (scale-out<\/i> par duplication de bloc standard) plut\u00f4t que la scalabilit\u00e9 verticale (scale-up<\/i> par augmentation des ressources internes de chaque bloc). Ainsi, on d\u00e9ploie un bloc pr\u00eat \u00e0 l\u2019emploi disposant d\u2019une certaine quantit\u00e9 de ressources que l\u2019on active et que l\u2019on paye en fonction de ses besoins et usages. Cela est aujourd\u2019hui possible gr\u00e2ce au mod\u00e8le de facturation des fournisseurs. De plus, cela apporte de la flexibilit\u00e9 \u00e0 la DSI pour accueillir des besoins non pr\u00e9vus au portefeuille projets en activant simplement de nouvelles ressources. Par cons\u00e9quent, les d\u00e9lais projets sont r\u00e9duits par la suppression de l\u2019\u00e9tape d\u2019acquisition du mat\u00e9riel. Le processus de capacity planning se voit alors<\/i> pilot\u00e9 efficacement tout en limitant les co\u00fbts \u00e0 la consommation des ressources.<\/p>\n

Les infrastructures converg\u00e9es permettent \u00e9galement de simplifier l\u2019architecture globale du datacenter<\/i> <\/b>en cr\u00e9ant une \u00ab zone franche \u00bb d\u2019infrastructure ind\u00e9pendante et auto-suffisante. Les interactions entre les diff\u00e9rentes couches d\u2019infrastructures sont alors ma\u00eetris\u00e9es, contr\u00f4l\u00e9es et contenues dans des \u00ab\u00a0blocs\u00a0\u00bb qui proposent des ressources informatiques standardis\u00e9es.<\/p>\n

Cette \u00ab\u00a0zone franche\u00a0\u00bb est accessible par un seul point d\u2019entr\u00e9e. Cette interface unique permet d\u2019op\u00e9rer et d\u2019administrer l\u2019ensemble des ressources disponibles par bloc ou sur l\u2019ensemble de la zone. La cr\u00e9ation d\u2019une \u00e9quipe mutualis\u00e9e, multi comp\u00e9tences, enrichie de profils d\u2019architectures transverses permet de s\u2019affranchir du mod\u00e8le historique en silo. Cela permet de renforcer le maintien en condition op\u00e9rationnelle des infrastructures. De plus, les risques d\u2019incidents peuvent \u00eatre limit\u00e9s \u00e0 condition qu\u2019un chantier de convergence et d\u2019industrialisation des processus d\u2019exploitation soit men\u00e9.<\/p>\n

L\u2019apport des infrastructures converg\u00e9es pour impulser une strat\u00e9gie DSI \u00ab\u00a0Cloud Broker<\/i>\u00a0\u00bb<\/h2>\n

Les infrastructures converg\u00e9es repr\u00e9sentent un investissement id\u00e9al pour commencer \u00e0 placer la DSI en tant que fournisseur\u00a0de Cloud<\/i> priv\u00e9<\/b>\u00a0car ces nouvelles infrastructures vont permettre de b\u00e9n\u00e9ficier d\u2019un socle de ressources standardis\u00e9es. Le mode d\u2019administration entra\u00eene \u00e9galement une industrialisation et une consolidation des processus d\u2019exploitation. De plus, l\u2019ensemble des infrastructures sont pilot\u00e9es \u00e0 travers une interface centralis\u00e9e. On rassemble ici certaines qualit\u00e9s propres au Cloud computing<\/i> mais il manque certains \u00e9l\u00e9ments essentiels permettant de tirer toute la puissance des infrastructures converg\u00e9es\u00a0:<\/p>\n

    \n
  • Le design et la d\u00e9finition d\u2019une offre de services \u00e0 proposer aux clients\u00a0;<\/li>\n
  • L\u2019orchestration et l\u2019automatisation des services afin de r\u00e9pondre imm\u00e9diatement \u00e0 la demande\u00a0;<\/li>\n
  • Un portail de gestion et de suivi des demandes.<\/li>\n<\/ul>\n

    Le CMP (pour Cloud Management Platform<\/i>) est l\u2019outil qui va permettre de construire un Cloud<\/i> priv\u00e9 IaaS (Infrastructure-as-a-Services<\/i>) et PaaS (Platform-as-a-Service<\/i>) reposant sur les infrastructures converg\u00e9es.<\/b> La standardisation des infrastructures et la console de gestion centralis\u00e9e va faciliter le projet d\u2019int\u00e9gration avec le CMP. Ce Cloud<\/i> priv\u00e9 constituera les premi\u00e8res offres de services propos\u00e9es par la DSI. Celle-ci se placera en tant que fournisseur de services \u00e0 valeur ajout\u00e9e pour le M\u00e9tier.<\/p>\n

    Dans un premier temps, ce nouveau catalogue de services s\u2019attachera \u00e0 proposer des offres de la DSI, h\u00e9berg\u00e9es en interne et adapt\u00e9es aux besoins du M\u00e9tier. Ensuite, ce catalogue pourra progressivement \u00eatre \u00e9tendu et enrichi en proposant des services Cloud<\/i> privatif ou public. Ainsi, il sera possible de mettre en place un nouveau mod\u00e8le de refacturation bas\u00e9 sur la consommation de services interne ou externe propos\u00e9s par la DSI (Cloud <\/i>hybride).<\/p>\n

    La mise en place de cette strat\u00e9gie \u00ab Cloud Broker <\/i>\u00bb n\u00e9cessite un programme de transformation \u00e0 part enti\u00e8re<\/b> compos\u00e9 de plusieurs grands projets transverses\u00a0: standardisation du socle technique, normalisation et cr\u00e9ation d\u2019une offre de services, construction d\u2019un Cloud <\/i>priv\u00e9, d\u00e9finition d\u2019une strat\u00e9gie Cloud<\/i>, chantier de refacturation, etc…<\/p>\n

    S\u2019appuyer sur un Cloud<\/i> priv\u00e9 ma\u00eetris\u00e9 et fonctionnel reposant sur des infrastructures converg\u00e9es fournira un acc\u00e9l\u00e9rateur et un levier de transformation pour impulser cette nouvelle strat\u00e9gie au sein de l\u2019entreprise.<\/p>\n

    De nouvelles opportunit\u00e9s sous r\u00e9serve de conduire un programme de transformation<\/h2>\n

    Pour conclure, les infrastructures converg\u00e9es permettent de limiter les risques d\u2019incidents<\/b> synonymes d\u2019indisponibilit\u00e9 et de pertes financi\u00e8res potentielles. Elles diminuent le time-to-market<\/i> et permettent de mettre en place de nouveaux services \u00e0 valeur ajout\u00e9e \u00e0 destination du M\u00e9tier. De plus, la standardisation des infrastructures et des processus repr\u00e9sentent un levier fort pour l\u2019industrialisation du SI et l\u2019am\u00e9lioration de la performance \u00e9conomique de la DSI. Pour autant, cela implique des changements majeurs dans le SI et dans la fa\u00e7on de l\u2019op\u00e9rer. L\u2019ensemble des chantiers de transformation devront n\u00e9anmoins \u00a0\u00eatre pilot\u00e9s de mani\u00e8re transverse par la DSI pour tirer tous les b\u00e9n\u00e9fices des infrastructures converg\u00e9es. \u00cates-vous pr\u00eats \u00e0 sauter le pas\u00a0?<\/p>\n","protected":false},"excerpt":{"rendered":"

    Dans un pr\u00e9c\u00e9dent article, nous expliquions les tenants et aboutissants des infrastructures converg\u00e9es. Mais les infrastructures converg\u00e9es sont-elles \u00a0une r\u00e9elle innovation ou un effet de mode visant \u00e0 renforcer un discours commercial ? Un constat s\u2019impose\u00a0: de plus en plus…<\/p>\n","protected":false},"author":56,"featured_media":4451,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"page-templates\/tmpl-one.php","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[35],"tags":[44,1717],"coauthors":[896,1681],"class_list":["post-5884","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-strategie-projets-it","tag-cloud-computing","tag-infrastructures-convergees"],"acf":[],"yoast_head":"\nInfrastructures converg\u00e9es : un 1er pas vers un SI Cloud-Ready ? - RiskInsight<\/title>\n<meta name=\"description\" content=\"Un constat s\u2019impose : de plus en plus de constructeurs proposent des infrastructures converg\u00e9es. Quels sont les gains que l\u2019on peut en attendre ? 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