{"id":4341,"date":"2020-10-30T20:49:36","date_gmt":"2020-10-30T19:49:36","guid":{"rendered":"https:\/\/webhosting.de\/?p=4341"},"modified":"2020-10-30T20:49:36","modified_gmt":"2020-10-30T19:49:36","slug":"creation-dun-disque-dur-sous-linux","status":"publish","type":"post","link":"https:\/\/webhosting.de\/fr\/erstellen-einer-ramdisk-unter-linux\/","title":{"rendered":"Cr\u00e9er un disque dur sous Linux"},"content":{"rendered":"<p>A <a href=\"https:\/\/webhosting.de\/fr\/ramdisk-zur-beschleunigung-erstellen\/\">ramdisk<\/a> est un minuscule disque virtuel qui fait partie de la m\u00e9moire principale. Ce <a href=\"https:\/\/webhosting.de\/fr\/wie-wichtig-ist-der-arbeitsspeicher-beim-webhosting\/\">M\u00e9moire de travail<\/a> est appel\u00e9e RAM. La m\u00e9moire est utilis\u00e9e de mani\u00e8re dynamique et statique. Ce syst\u00e8me de fichiers est mont\u00e9 et format\u00e9 au pr\u00e9alable. L'espace m\u00e9moire est d\u00e9riv\u00e9 et ne peut pas \u00eatre accessible par le syst\u00e8me.<\/p>\n<h2>La m\u00e9moire volatile - Le ramdisk<\/h2>\n<p>Pour Linux, le disque dur est important pour permettre un processus de lecture et d'\u00e9criture rapide. Il est donc moins affect\u00e9 par l'usure, comme un disque dur normal ou m\u00eame une m\u00e9moire flash. Un processeur occup\u00e9 ou une connexion r\u00e9seau lente peuvent bien s\u00fbr arr\u00eater le disque. Les probl\u00e8mes de suppression sous les syst\u00e8mes de fichiers comme ext3 ou ext4 peuvent m\u00eame \u00eatre \u00e9vit\u00e9s. Les fichiers pr\u00e9caires ne sont pas copi\u00e9s sur le disque dur, mais stock\u00e9s dans le syst\u00e8me de fichiers, c'est-\u00e0-dire le disque dur. Il est \u00e0 noter que les fichiers ne finissent pas sur le disque dur. Certains fichiers se stockent entre les deux sans avoir \u00e9t\u00e9 sollicit\u00e9s. Pour cr\u00e9er un disque dur, diff\u00e9rentes m\u00e9thodes peuvent \u00eatre utilis\u00e9es.<\/p>\n<h3><a href=\"https:\/\/webhosting.de\/wp-content\/uploads\/2017\/01\/ufo.png\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-2023 alignright\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2017\/01\/ufo.png\" alt=\"vitesse ufo\" width=\"255\" height=\"255\" \/><\/a><\/h3>\n<h3>Les diff\u00e9rentes possibilit\u00e9s<\/h3>\n<p>La premi\u00e8re fa\u00e7on serait de cr\u00e9er un disque dur avec un syst\u00e8me de fichiers tmps. Il ne s'agit pas d'un syst\u00e8me de m\u00e9moire vive complet, mais il peut \u00e9galement \u00eatre stock\u00e9 sur le disque dur <a href=\"https:\/\/webhosting.de\/fr\/personenbezogene-daten-sozialen-netzwerken\/\">Donn\u00e9es<\/a> sauver. Cela permet d'\u00e9viter que la m\u00e9moire sur le disque dur ne devienne trop petite. Si le disque est vide, il ne peut utiliser aucun espace sur le disque, et ces partitions peuvent \u00eatre mont\u00e9es au moment du d\u00e9marrage.<br \/>\nLa deuxi\u00e8me fa\u00e7on est de formater le disque dur. De cette fa\u00e7on, une zone peut \u00eatre s\u00e9lectionn\u00e9e comme disque RAM. Une option -m0 devrait garantir qu'aucun espace n'est r\u00e9serv\u00e9 sur l'utilisateur root. Cela prendrait de la place. En effet, les ressources du syst\u00e8me devraient \u00eatre supprim\u00e9es. De cette fa\u00e7on, la m\u00e9moire est plus petite avec les partitions. Le but est d'obtenir un disque dur qui ne peut \u00eatre lu ou \u00e9crit, mais qui comporte des corrections. Il faudra probablement l'accorder. La taille du disque dur peut \u00eatre appel\u00e9e et modifi\u00e9e \u00e0 l'aide de commandes sp\u00e9ciales. \u00c0 chaque red\u00e9marrage, le disque dispara\u00eet \u00e0 nouveau, il faut donc cr\u00e9er un script pour enregistrer les commandes. Ainsi, il n'est pas n\u00e9cessaire de retaper les commandes.<br \/>\nLa troisi\u00e8me fa\u00e7on est de travailler avec le syst\u00e8me de fichiers ramfs. Ce syst\u00e8me diff\u00e8re du syst\u00e8me de fichiers tmpfs en ce sens que les donn\u00e9es sont \u00e9chang\u00e9es. Cela facilite \u00e9galement la cr\u00e9ation. Le disque est redimensionn\u00e9 dynamiquement et la partition est toujours mont\u00e9e au moment du d\u00e9marrage. Cela peut \u00eatre \u00e9vit\u00e9 gr\u00e2ce aux privil\u00e8ges d'\u00e9diteur et de racine.<\/p>\n<h3>La taille des disques RAM<\/h3>\n<p>Chacun des disques Ram cr\u00e9\u00e9s peut \u00eatre conserv\u00e9 \u00e0 une taille diff\u00e9rente. C'est diff\u00e9rent pour chacun. Le syst\u00e8me doit disposer d'une m\u00e9moire vive suffisante et il faut \u00e9galement pouvoir acc\u00e9der \u00e0 la m\u00e9moire d'\u00e9change, ou SWAP. Mais cela ralentirait la vitesse du disque RAM. 1 Go de RAM devrait souvent suffire.<\/p>\n<p>Un guide pour Linux se trouve dans l'article\u00a0<a href=\"https:\/\/webhosting.de\/fr\/ramdisk-to-acceleration-creates\/\">Cr\u00e9ation de Ramdisk pour acc\u00e9l\u00e9rer Amavis sous Linux<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Eine ramdisk ist ein winziges, virtuelles Laufwerk, das ein Teil des Arbeitsspeichers darstellt. Diesen Arbeitsspeicher nennt man RAM. Speicherplatz wird dynamisch und statisch belegt. Dieses Dateisystem wird eingeh\u00e4ngt und vorher formatiert. Der Speicherplatz wird abgezweigt und ist f\u00fcr das System nicht erreichbar. Der fl\u00fcchtige Speicher- Die ramdisk F\u00fcr Linux ist die ramdisk wichtig um einen 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