{"id":51342,"date":"2020-04-28T10:11:01","date_gmt":"2020-04-28T17:11:01","guid":{"rendered":"https:drivesaversdatarecovery.com\/\/?p=51342"},"modified":"2024-01-19T01:20:29","modified_gmt":"2024-01-19T09:20:29","slug":"quest-ce-quune-carte-sd","status":"publish","type":"post","link":"https:\/\/drivesaversdatarecovery.com\/fr-fr\/blog\/what-is-an-sd-card-anyway\/","title":{"rendered":"Qu'est-ce qu'une carte SD ?"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><div class=\"vc_row wpb_row vc_row-fluid wpex-relative\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\">\n\t<div class=\"wpb_text_column wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<div class=\"vc_row wpb_row vc_row-fluid wpex-relative\"><\/div><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><\/div><\/div><\/div>\n\t<div class=\"wpb_text_column wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t\n\t\t<\/div>\n\t<\/div>\nDepuis les d\u00e9buts de l'informatique il y a plusieurs d\u00e9cennies, les utilisateurs ont cherch\u00e9 des moyens de d\u00e9placer facilement leurs donn\u00e9es d'un appareil \u00e0 l'autre. Au fil des ans, le stockage mobile s'est pr\u00e9sent\u00e9 sous de nombreuses formes, certaines avec un peu plus de finesse que d'autres.<\/p>\n<p>Cela peut surprendre, mais la premi\u00e8re forme de stockage amovible \u00e9tait en fait une carte perfor\u00e9e. Cette carte a \u00e9t\u00e9 con\u00e7ue dans les ann\u00e9es 1950 pour enregistrer divers types de donn\u00e9es qui \u00e9taient ensuite introduites dans un ordinateur. La machine lisait les perforations et interpr\u00e9tait les donn\u00e9es.<\/p>\n<p>C'est \u00e0 partir de l\u00e0 que la bande magn\u00e9tique s'est d\u00e9velopp\u00e9e. Cette innovation a domin\u00e9 l'informatique dans les ann\u00e9es 1960 et 1970, mais a finalement \u00e9t\u00e9 remplac\u00e9e par les disquettes et les CD-ROM dans les ann\u00e9es 1980 et 1990. Mais d\u00e8s le d\u00e9but du nouveau mill\u00e9naire, les utilisateurs et leurs appareils ont exig\u00e9 un nouveau type de stockage : la m\u00e9moire flash.<\/p>\n<p>La m\u00e9moire flash se pr\u00e9sente sous de nombreuses formes. Ce type de stockage est le plus souvent associ\u00e9 aux cl\u00e9s USB, mais la technologie flash est \u00e9galement utilis\u00e9e sur les cartes SD.<\/p>\n<h2>Qu'est-ce qu'une carte SD ?<\/h2>\n<p>Les cartes SD (Secure Digital) sont une petite forme de m\u00e9moire flash qui s'est popularis\u00e9e avec l'essor des appareils photo num\u00e9riques et des smartphones. La plupart de ces appareils ont besoin d'une carte SD pour enregistrer leurs donn\u00e9es. La carte, souvent de la taille d'une pi\u00e8ce de 25 cents ou moins, peut \u00eatre extraite d'un appareil et ins\u00e9r\u00e9e dans un autre pour transf\u00e9rer rapidement et facilement des donn\u00e9es.<\/p>\n<p>Ces dispositifs offrent une puissance et un espace de stockage consid\u00e9rables pour leur taille. Compar\u00e9es aux cartes perfor\u00e9es et aux bandes magn\u00e9tiques des d\u00e9cennies pr\u00e9c\u00e9dentes, les cartes SD permettent de mesurer \u00e0 quel point l'informatique a \u00e9volu\u00e9 au fil du temps.<\/p>\n<p>Mais qu'est-ce qui caract\u00e9rise les cartes SD ? Existe-t-il diff\u00e9rents types de cartes SD ? Que doit faire un utilisateur en cas de d\u00e9faillance de sa carte SD ? Lisez la suite pour en savoir plus.<\/p>\n<h2>Comment fonctionne une carte SD ?<\/h2>\n<p>Comme indiqu\u00e9 pr\u00e9c\u00e9demment, SD est l'abr\u00e9viation de \"secure digital\" (num\u00e9rique s\u00e9curis\u00e9), mais qu'est-ce qu'une carte SD ? Pour comprendre les cartes SD et leur fonctionnement, il faut d'abord comprendre ce qu'est la m\u00e9moire flash.<\/p>\n<p>Les lecteurs flash sont des dispositifs de stockage \u00e0 l'\u00e9tat solide, c'est-\u00e0-dire qu'ils ne comportent aucune pi\u00e8ce m\u00e9canique mobile. Ces dispositifs sont 100 % \u00e9lectroniques et permettent d'\u00e9crire, d'effacer et de r\u00e9\u00e9crire des donn\u00e9es. Ce qui distingue le stockage flash, c'est sa capacit\u00e9 \u00e0 faire tout cela dans un espace limit\u00e9, car le stockage flash est connu pour \u00eatre petit et extr\u00eamement portable.<\/p>\n<p>Les cartes SD sont un type de m\u00e9moire flash. Elles se pr\u00e9sentent g\u00e9n\u00e9ralement sous la forme d'un timbre-poste ou d'un format similaire et ont une \u00e9paisseur de moins d'un dixi\u00e8me de pouce. Elles utilisent un petit circuit imprim\u00e9 et r\u00e9agissent \u00e0 un courant \u00e9lectrique pour stocker des donn\u00e9es. Cette m\u00eame technologie permet aux donn\u00e9es d'\u00eatre r\u00e9cup\u00e9r\u00e9es par n'importe quel appareil \u00e9quip\u00e9 d'un lecteur de carte SD.<\/p>\n<p>La plupart des cartes SD sont dot\u00e9es du protocole SDHC, qui signifie \"secure data high capacity\" (donn\u00e9es s\u00e9curis\u00e9es \u00e0 haute capacit\u00e9). Ce protocole permet aux cartes SD de contenir jusqu'\u00e0 32 Go de donn\u00e9es. Le protocole SDHC a chang\u00e9 la donne pour les cartes SD, en faisant d'elles le choix privil\u00e9gi\u00e9 de nombreux appareils \u00e9lectroniques grand public en raison de leur rapport stockage\/taille (et prix) \u00e9lev\u00e9.<\/p>\n<p>Cependant, le march\u00e9 pourrait bient\u00f4t proposer des cartes SD encore plus grandes. Un nouveau protocole, appel\u00e9 Secure Data Extended Capacity (SDXC), permet aux cartes SD de contenir jusqu'\u00e0 2 To de donn\u00e9es. Cette technologie est encore en cours de d\u00e9veloppement, mais elle donnera bient\u00f4t naissance \u00e0 des cartes SD dot\u00e9es de capacit\u00e9s de stockage encore plus importantes.<\/p>\n<h2>Quels sont les types de cartes SD ?<\/h2>\n<p>Comme nous l'avons vu, il existe diff\u00e9rents protocoles (SDHC et SDXC) pour les cartes SD, ce qui constitue certainement deux types. Mais il existe \u00e9galement plusieurs tailles diff\u00e9rentes. Les cartes SD existent en format normal, mini et micro.<\/p>\n<p>Lorsque les cartes SD sont apparues sur le march\u00e9, le format normal \u00e9tait tr\u00e8s populaire et g\u00e9n\u00e9ralement consid\u00e9r\u00e9 comme la norme. La taille normale est de 32 x 24 mm, ce qui convient \u00e0 la plupart des ordinateurs et des appareils photo num\u00e9riques. Les consommateurs sont rapidement tomb\u00e9s amoureux de cette solution de stockage compacte, et les cartes SD ont suivi l'\u00e9volution de la taille des appareils.<\/p>\n<p>Les mini-cartes SD ont \u00e9t\u00e9 con\u00e7ues pour \u00eatre int\u00e9gr\u00e9es dans des appareils photo num\u00e9riques plus petits et d'autres supports similaires. Elles mesurent 21,5 x 20 mm. Les appareils ne disposant que d'un port de carte SD normal peuvent facilement utiliser un adaptateur pour brancher les mini-cartes SD sur un port de taille normale. Mais ce type de carte SD est rarement utilis\u00e9 aujourd'hui, car la carte micro SD, beaucoup plus petite que la mini, a envahi le march\u00e9 du stockage flash minuscule.<\/p>\n<p>Les cartes Micro SD sont les cartes les plus petites \u00e0 ce jour, avec une taille de 15 x 11 mm et une \u00e9paisseur d'\u00e0 peine 1 mm. L'\u00e9volution des t\u00e9l\u00e9phones portables vers des appareils plus intelligents et plus petits a n\u00e9cessit\u00e9 une solution de stockage plus petite. Les cartes Micro SD r\u00e9pondent \u00e0 ce besoin et sont souvent utilis\u00e9es pour augmenter les capacit\u00e9s de stockage int\u00e9gr\u00e9es des smartphones et d'autres petits appareils.<\/p>\n<h2>Combien co\u00fbtent les cartes SD ?<\/h2>\n<p>Lorsqu'elles sont apparues sur le march\u00e9, les cartes SD \u00e9taient assez ch\u00e8res. Il y a encore 15 ans, on pouvait facilement d\u00e9penser $100 pour une mini-carte SD de 4 Go. Mais cette \u00e9poque est r\u00e9volue et, comme pour la plupart des supports de stockage, le co\u00fbt des cartes SD a consid\u00e9rablement baiss\u00e9.<\/p>\n<p>Voici un aper\u00e7u de ce que vous pouvez vous attendre \u00e0 payer pour une carte SD en 2020 :<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div><div class=\"vc_row wpb_row vc_row-fluid wpex-relative\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\">\n\t<div  class=\"wpb_single_image wpb_content_element vc_align_ wpb_content_element\">\n\t\t\n\t\t<figure class=\"wpb_wrapper vc_figure\">\n\t\t\t<div class=\"vc_single_image-wrapper   vc_box_border_grey\"><img width=\"1890\" height=\"560\" src=\"https:\/\/drivesaversdatarecovery.com\/wp-content\/uploads\/2020\/04\/Screen-Shot-2020-04-27-at-1.03.41-PM.png\" class=\"vc_single_image-img attachment-full\" alt=\"\" title=\"Capture d&#039;\u00e9cran 2020-04-27 \u00e0 1.03.41 PM\" srcset=\"https:\/\/drivesaversdatarecovery.com\/wp-content\/uploads\/2020\/04\/Screen-Shot-2020-04-27-at-1.03.41-PM.png 1890w, https:\/\/drivesaversdatarecovery.com\/wp-content\/uploads\/2020\/04\/Screen-Shot-2020-04-27-at-1.03.41-PM-300x89.png 300w, https:\/\/drivesaversdatarecovery.com\/wp-content\/uploads\/2020\/04\/Screen-Shot-2020-04-27-at-1.03.41-PM-1024x303.png 1024w, https:\/\/drivesaversdatarecovery.com\/wp-content\/uploads\/2020\/04\/Screen-Shot-2020-04-27-at-1.03.41-PM-768x228.png 768w, https:\/\/drivesaversdatarecovery.com\/wp-content\/uploads\/2020\/04\/Screen-Shot-2020-04-27-at-1.03.41-PM-1536x455.png 1536w\" sizes=\"(max-width: 1890px) 100vw, 1890px\" \/><\/div>\n\t\t<\/figure>\n\t<\/div>\n<\/div><\/div><\/div><\/div><div class=\"vc_row wpb_row vc_row-fluid wpex-relative\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\">\n\t<div class=\"wpb_text_column wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p>Comme vous pouvez le constater, les prix sont comparables et, dans certains cas, la carte micro est plus abordable que la carte SD classique. Mais le choix d\u00e9pend en fait du type de port SD de votre appareil. L'achat d'une carte SD est assez simple, il suffit de v\u00e9rifier le type de carte dont votre appareil a besoin.<\/p>\n<h2>Que faire en cas de d\u00e9faillance d'une carte SD ?<\/h2>\n<p>La technologie est formidable jusqu'\u00e0 ce qu'elle tombe en panne. Rien n'est con\u00e7u pour durer \u00e9ternellement, et les cartes SD ne font pas exception \u00e0 la r\u00e8gle. Comme toutes les m\u00e9moires flash, elles ne peuvent \u00e9crire et r\u00e9\u00e9crire des donn\u00e9es qu'un nombre pr\u00e9d\u00e9termin\u00e9 de fois.<\/p>\n<p>Avant que votre appareil ne tombe en panne, assurez-vous de disposer d'une copie de sauvegarde de vos donn\u00e9es sur votre disque dur local, sur une solution de stockage dans le nuage ou sur les deux. Vous vous \u00e9pargnerez ainsi des maux de t\u00eate en cas de d\u00e9faillance de votre carte SD.<\/p>\n<p>Si la carte SD tombe en panne et que vous n'avez pas de sauvegarde, contactez imm\u00e9diatement un sp\u00e9cialiste de la r\u00e9cup\u00e9ration de donn\u00e9es. N'essayez pas de r\u00e9soudre le probl\u00e8me vous-m\u00eame... car vous risquez d'aggraver la situation !<\/p>\n<p>Les sp\u00e9cialistes de la r\u00e9cup\u00e9ration des donn\u00e9es sont hautement qualifi\u00e9s et bien \u00e9quip\u00e9s pour \u00e9valuer et r\u00e9cup\u00e9rer vos informations, quelles que soient les circonstances. Ainsi, les sp\u00e9cialistes de la r\u00e9cup\u00e9ration des donn\u00e9es <a href=\"https:\/\/drivesaversdatarecovery.com\/fr-fr\/contact\/\">Contacter DriveSavers<\/a> la prochaine fois que votre carte SD sera d\u00e9faillante.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"Since computing began several decades ago, users have looked for ways to easily move their data from one device to another. Over the years, moveable storage has come in many forms\u2014some with a bit more finesse than others. This may come as a surprise, but the first form of removable storage was actually a punch&hellip;","protected":false},"author":25,"featured_media":67207,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"om_disable_all_campaigns":false,"inline_featured_image":false,"footnotes":""},"categories":[264],"tags":[],"post_series":[],"class_list":["post-51342","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","entry","has-media"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.9 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>What is an SD card, anyway?<\/title>\n<meta name=\"description\" content=\"SD cards have been on the portable storage scene for nearly two decades. But what are SD cards, really? Here\u2019s everything you ever needed to know about SD cards\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/drivesaversdatarecovery.com\/fr-fr\/blog\/quest-ce-quune-carte-sd\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is an SD card, anyway?\" \/>\n<meta property=\"og:url\" content=\"https:\/\/drivesaversdatarecovery.com\/fr-fr\/blog\/quest-ce-quune-carte-sd\/\" \/>\n<meta property=\"og:site_name\" content=\"DriveSavers Data Recovery Services\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/DriveSavers\" \/>\n<meta property=\"article:published_time\" content=\"2020-04-28T17:11:01+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-01-19T09:20:29+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/drivesaversdatarecovery.com\/wp-content\/uploads\/2020\/04\/pexels-cottonbro-studio-5474286-scaled-e1700308176894.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2000\" \/>\n\t<meta property=\"og:image:height\" content=\"1046\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Mike Cobb\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@drivesavers\" \/>\n<meta name=\"twitter:site\" content=\"@drivesavers\" \/>\n<meta name=\"twitter:label1\" content=\"\u00c9crit par\" \/>\n\t<meta name=\"twitter:data1\" content=\"Mike Cobb\" \/>\n\t<meta name=\"twitter:label2\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"TechArticle\",\"@id\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/blog\\\/what-is-an-sd-card-anyway\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/blog\\\/what-is-an-sd-card-anyway\\\/\"},\"author\":{\"name\":\"Mike Cobb\",\"@id\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/#\\\/schema\\\/person\\\/71a038c3b180b1f2df821d2b015b8ee6\"},\"headline\":\"What is an SD card, anyway?\",\"datePublished\":\"2020-04-28T17:11:01+00:00\",\"dateModified\":\"2024-01-19T09:20:29+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/blog\\\/what-is-an-sd-card-anyway\\\/\"},\"wordCount\":1083,\"publisher\":{\"@id\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/blog\\\/what-is-an-sd-card-anyway\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/wp-content\\\/uploads\\\/2020\\\/04\\\/pexels-cottonbro-studio-5474286-scaled-e1700308176894.jpg\",\"articleSection\":[\"Blog\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/blog\\\/what-is-an-sd-card-anyway\\\/\",\"url\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/blog\\\/what-is-an-sd-card-anyway\\\/\",\"name\":\"What is an SD card, anyway?\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/blog\\\/what-is-an-sd-card-anyway\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/blog\\\/what-is-an-sd-card-anyway\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/wp-content\\\/uploads\\\/2020\\\/04\\\/pexels-cottonbro-studio-5474286-scaled-e1700308176894.jpg\",\"datePublished\":\"2020-04-28T17:11:01+00:00\",\"dateModified\":\"2024-01-19T09:20:29+00:00\",\"description\":\"SD cards have been on the portable storage scene for nearly two decades. 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He also oversees the R&amp;D efforts for past, present, and future storage technologies. Mike encourages growth and ensures that each of the departments and their engineers continues to gain knowledge in their field. Each DriveSavers engineer has been trained to ensure the successful and complete recovery of data is their top priority. As Chief Information Security Officer (CISO), Mike oversees cybersecurity at DriveSavers, including maintaining and updating security certifications such as SOC 2 Type II compliance, coordinating company security policy, and employee cybersecurity education. 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