{"id":7123,"date":"2022-09-02T09:33:01","date_gmt":"2022-09-02T16:33:01","guid":{"rendered":"https:drivesaversdatarecovery.com\/\/?p=7123"},"modified":"2026-03-05T05:27:53","modified_gmt":"2026-03-05T13:27:53","slug":"ssd-101","status":"publish","type":"post","link":"https:\/\/drivesaversdatarecovery.com\/fr-fr\/blog\/ssd-101\/","title":{"rendered":"SSD 101 : Guide des disques durs \u00e0 semi-conducteurs"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><div class=\"vc_section wpex-relative\"><div class=\"vc_row wpb_row vc_row-fluid vc_custom_1662569792245 vc_rtl-columns-reverse vc_row-o-content-middle vc_row-flex 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 style=\"color:#222222;\" class=\"wpb_text_column has-custom-color wpex-child-inherit-color wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p>Les disques durs \u00e0 \u00e9tat solide (SSD) constituent l'une des solutions les plus populaires, les plus rapides et les plus efficaces sur le plan \u00e9nerg\u00e9tique pour le stockage et le partage d'informations. Toute personne ayant affaire \u00e0 la technologie SSD doit conna\u00eetre quelques d\u00e9tails sur le fonctionnement de ces appareils uniques. Les ing\u00e9nieurs en r\u00e9cup\u00e9ration de donn\u00e9es de DriveSavers ont pr\u00e9par\u00e9 l'aide-m\u00e9moire suivant pour vous aider \u00e0 comprendre la technologie derri\u00e8re ces machines de stockage de donn\u00e9es avanc\u00e9es.<\/p>\n<p>Contrairement \u00e0 un lecteur \u00e9lectrom\u00e9canique traditionnel, un lecteur \u00e0 semi-conducteurs ne comporte pas de pi\u00e8ces mobiles. Le SSD utilise des puces de m\u00e9moire flash NAND pour stocker les donn\u00e9es. En outre, au lieu d'\u00e9crire les donn\u00e9es sur des plateaux en rotation (HDD ou disque dur), un SSD stocke les donn\u00e9es sur un r\u00e9seau de ces puces de m\u00e9moire.<\/p>\n<p>Les premiers disques SSD avaient une capacit\u00e9 bien inf\u00e9rieure \u00e0 celle d'un disque dur moyen et co\u00fbtaient beaucoup plus cher. Aujourd'hui, un disque SSD typique stocke 1 \u00e0 2 To de donn\u00e9es, et il existe des disques SSD d'entreprise qui peuvent stocker jusqu'\u00e0 100 To. En outre, \u00e0 mesure que la capacit\u00e9 de stockage augmente d'ann\u00e9e en ann\u00e9e, les diff\u00e9rences de co\u00fbt se r\u00e9duisent.<\/p>\n<p>La technologie d'empilement de couches de cellules 3D - comme la V-NAND de Samsung et la 3D NAND de Toshiba et SanDisk - est en plein essor, car les fabricants tentent de faire entrer davantage d'informations dans des espaces de plus en plus r\u00e9duits.<\/p>\n<p>Avec les technologies 3D NAND, les cellules de m\u00e9moire sont empil\u00e9es verticalement en couches afin d'obtenir des densit\u00e9s plus \u00e9lev\u00e9es, ce qui permet \u00e9galement de r\u00e9duire les co\u00fbts de fabrication.<\/p>\n<p>Au niveau de l'entreprise, des fabricants comme PURE Storage et SolidFire\/NetApp fabriquent des syst\u00e8mes RAID qui relient plusieurs disques SSD de grande taille afin de fournir une capacit\u00e9 de stockage encore plus importante.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div><div class=\"vc_row wpb_row vc_row-fluid vc_custom_1661794759383 vc_row-o-content-middle vc_row-flex wpex-vc-full-width-row wpex-vc-full-width-row--centered wpex-relative wpex-vc_row-has-fill wpex-vc-reset-negative-margin\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_separator wpb_content_element vc_separator_align_center vc_sep_width_100 vc_sep_dashed vc_sep_border_width_3 vc_sep_pos_align_center vc_separator_no_text vc_sep_color_white wpb_content_element  wpb_content_element\" ><span class=\"vc_sep_holder vc_sep_holder_l\"><span class=\"vc_sep_line\"><\/span><\/span><span class=\"vc_sep_holder vc_sep_holder_r\"><span class=\"vc_sep_line\"><\/span><\/span>\n<\/div><\/div><\/div><\/div><\/div><div class=\"vc_row wpb_row vc_row-fluid vc_column-gap-10 vc_row-o-equal-height vc_row-o-content-middle vc_row-flex wpex-vc-full-width-row wpex-vc-full-width-row--centered wpex-relative no-bottom-margins tablet-fullwidth-columns\"><div class=\"wpb_column vc_column_container vc_col-sm-3 vc_hidden-md vc_hidden-sm vc_hidden-xs\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><figure class=\"vcex-image vcex-module\"><div class=\"vcex-image-inner wpex-relative wpex-inline-block\"><img width=\"800\" height=\"800\" src=\"https:\/\/drivesaversdatarecovery.com\/wp-content\/uploads\/2022\/09\/Clean_Room_Guide.png\" class=\"vcex-image-img wpex-align-middle\" alt=\"\" decoding=\"async\" srcset=\"https:\/\/drivesaversdatarecovery.com\/wp-content\/uploads\/2022\/09\/Clean_Room_Guide.png 800w, https:\/\/drivesaversdatarecovery.com\/wp-content\/uploads\/2022\/09\/Clean_Room_Guide-300x300.png 300w, https:\/\/drivesaversdatarecovery.com\/wp-content\/uploads\/2022\/09\/Clean_Room_Guide-150x150.png 150w, https:\/\/drivesaversdatarecovery.com\/wp-content\/uploads\/2022\/09\/Clean_Room_Guide-768x768.png 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/div><\/figure><\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-9\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><style>.vcex-animated-text.vcex_69de6a2f3da33{text-align:start;color:#1c1c1c;font-size:3.7em;}@media (max-width:1024px){.vcex-animated-text.vcex_69de6a2f3da33{font-size:2em;}}@media (max-width:959px){.vcex-animated-text.vcex_69de6a2f3da33{font-size:2em;}}@media (max-width:767px){.vcex-animated-text.vcex_69de6a2f3da33{font-size:2em;}}@media (max-width:479px){.vcex-animated-text.vcex_69de6a2f3da33{font-size:2em;}}<\/style><h2 class=\"vcex-animated-text vcex-module wpex-m-0 wpex-text-xl wpex-text-1 wpex-font-semibold wpex-leading-none vcex-typed-text-wrap wpex-text-left vc_custom_1662159132352 vcex_69de6a2f3da33\"><span class=\"vcex-animated-text__before vcex-typed-text-before vcex-before\">Liste des principaux termes techniques relatifs aux disques durs \u00e0 semi-conducteurs<\/span> <span class=\"vcex-animated-text__inner vcex-typed-text-inner vcex-typed-text-css wpex-inline-block wpex-max-w-100\"><span class=\"screen-reader-text\"><\/span><span class=\"vcex-animated-text__placeholder vcex-ph wpex-inline-block wpex-invisible\"><\/span><span class=\"vcex-animated-text__content vcex-typed-text\" aria-hidden=\"true\" data-settings=\"{&quot;loop&quot;:false,&quot;showCursor&quot;:false,&quot;typeSpeed&quot;:40,&quot;backDelay&quot;:500,&quot;backSpeed&quot;:0,&quot;startDelay&quot;:2000}\" data-strings=\"[]\"><\/span><\/span><\/h2><\/div><\/div><\/div><\/div><div class=\"vc_row wpb_row vc_row-fluid vc_column-gap-25 wpex-vc-full-width-row wpex-vc-full-width-row--centered wpex-relative\"><div class=\"wpb_column vc_column_container vc_col-sm-12 vc_hidden-md vc_hidden-sm vc_hidden-xs\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><style>.vcex-heading.vcex_69de6a2f3ebd4{font-size:2em;font-weight:600;line-height:1.2;}@media (max-width:959px){.vcex-heading.vcex_69de6a2f3ebd4{font-size:1.5em;}}@media (max-width:767px){.vcex-heading.vcex_69de6a2f3ebd4{font-size:1.5em;}}@media (max-width:479px){.vcex-heading.vcex_69de6a2f3ebd4{font-size:1.5em;}}<\/style><h3 class=\"vcex-heading vcex-heading-plain vcex-module wpex-heading wpex-text-2xl wpex-h3 vc_custom_1718649270420 vcex_69de6a2f3ebd4\"><span class=\"vcex-heading-inner wpex-inline-block\">NVM Express<\/span><\/h3>\n\t<div style=\"color:#222222;\" class=\"wpb_text_column has-custom-color wpex-child-inherit-color wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p>L'interface de contr\u00f4leur logique par laquelle le dispositif \u00e0 semi-conducteurs communique avec un ordinateur via une connexion physique entre le M.2 ou le U.2 du SSD et l'emplacement PCI Express de la carte m\u00e8re de l'ordinateur est NVM Express.<\/p>\n<p>NVM Express est similaire au connecteur USB de la plupart des disques durs portables. Elle a \u00e9t\u00e9 con\u00e7ue pour maximiser la bande passante et les performances des dispositifs de stockage \u00e0 semi-conducteurs. Cette interface permet aux niveaux de parall\u00e9lisme trouv\u00e9s dans les SSD modernes d'\u00eatre pleinement utilis\u00e9s par le mat\u00e9riel et le logiciel h\u00f4te. En cons\u00e9quence, NVM Express r\u00e9duit les frais g\u00e9n\u00e9raux d'E\/S et apporte diverses am\u00e9liorations de performance par rapport aux interfaces de p\u00e9riph\u00e9riques logiques pr\u00e9c\u00e9dentes, notamment de longues files d'attente de commandes multiples et une latence r\u00e9duite.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div><div class=\"vc_row wpb_row vc_row-fluid vc_column-gap-25 wpex-vc-full-width-row wpex-vc-full-width-row--centered wpex-relative\"><div class=\"wpb_column vc_column_container vc_col-sm-12 vc_hidden-md vc_hidden-sm vc_hidden-xs\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><style>.vcex-heading.vcex_69de6a2f4005e{font-size:2em;font-weight:600;line-height:1.2;}@media (max-width:959px){.vcex-heading.vcex_69de6a2f4005e{font-size:1.5em;}}@media (max-width:767px){.vcex-heading.vcex_69de6a2f4005e{font-size:1.5em;}}@media (max-width:479px){.vcex-heading.vcex_69de6a2f4005e{font-size:1.5em;}}<\/style><h3 class=\"vcex-heading vcex-heading-plain vcex-module wpex-heading wpex-text-2xl wpex-h3 vc_custom_1718649412634 vcex_69de6a2f4005e\"><span class=\"vcex-heading-inner wpex-inline-block\">PCI Express (PCIE)<\/span><\/h3>\n\t<div style=\"color:#222222;\" class=\"wpb_text_column has-custom-color wpex-child-inherit-color wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p>PCI Express (PCIe) est une connexion s\u00e9rie \u00e0 grande vitesse sur un ordinateur qui fonctionne plus comme un r\u00e9seau que comme un bus traditionnel. Un bus est un syst\u00e8me de communication qui transf\u00e8re des donn\u00e9es entre les composants d'un ordinateur ou entre diff\u00e9rents ordinateurs. Au lieu d'un bus qui g\u00e8re des donn\u00e9es provenant de sources multiples, PCI Express (PCIe) utilise un commutateur qui contr\u00f4le plusieurs connexions s\u00e9rie point \u00e0 point. Ces connexions m\u00e8nent aux dispositifs o\u00f9 les donn\u00e9es sont n\u00e9cessaires. Chaque appareil a sa propre connexion, il n'y a donc pas de partage de la bande passante comme c'est le cas sur un bus normal. Le PCe pr\u00e9sente d'autres avantages par rapport aux anciennes normes, notamment un d\u00e9bit plus \u00e9lev\u00e9, une taille physique plus petite, des m\u00e9canismes de d\u00e9tection et de signalement des erreurs plus d\u00e9taill\u00e9s, ainsi qu'une meilleure prise en charge de la virtualisation des entr\u00e9es\/sorties.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div><div class=\"vc_row wpb_row vc_row-fluid vc_column-gap-25 wpex-vc-full-width-row wpex-vc-full-width-row--centered wpex-relative\"><div class=\"wpb_column vc_column_container vc_col-sm-6 vc_hidden-md vc_hidden-sm vc_hidden-xs\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><style>.vcex-heading.vcex_69de6a2f414d7{font-size:2em;font-weight:600;line-height:1.2;}@media (max-width:959px){.vcex-heading.vcex_69de6a2f414d7{font-size:1.5em;}}@media (max-width:767px){.vcex-heading.vcex_69de6a2f414d7{font-size:1.5em;}}@media (max-width:479px){.vcex-heading.vcex_69de6a2f414d7{font-size:1.5em;}}<\/style><h3 class=\"vcex-heading vcex-heading-plain vcex-module wpex-heading wpex-text-2xl wpex-h3 vc_custom_1718649473989 vcex_69de6a2f414d7\"><span class=\"vcex-heading-inner wpex-inline-block\">SLC, MLC, TLC et QLC<\/span><\/h3>\n\t<div style=\"color:#222222;\" class=\"wpb_text_column has-custom-color wpex-child-inherit-color wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p>La diff\u00e9rence entre ces termes est assez explicite. Avec une cellule \u00e0 niveau unique (SLC), une seule information (un bit) est contenue dans une cellule de stockage. Les cellules multiniveaux (MLC) peuvent contenir deux \u00e9l\u00e9ments d'information (bits), les cellules triple niveau (TLC) peuvent contenir trois bits d'information par cellule et les cellules quadruple niveau (QLC) peuvent stocker quatre bits par cellule.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-6\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><style>.vcex-heading.vcex_69de6a2f4256c{font-size:2em;font-weight:600;line-height:1.2;}@media (max-width:959px){.vcex-heading.vcex_69de6a2f4256c{font-size:1.5em;}}@media (max-width:767px){.vcex-heading.vcex_69de6a2f4256c{font-size:1.5em;}}@media (max-width:479px){.vcex-heading.vcex_69de6a2f4256c{font-size:1.5em;}}<\/style><h3 class=\"vcex-heading vcex-heading-plain vcex-module wpex-heading wpex-text-2xl wpex-h3 vc_custom_1718649382838 vcex_69de6a2f4256c\"><span class=\"vcex-heading-inner wpex-inline-block\">Contr\u00f4leur<\/span><\/h3>\n\t<div style=\"color:#222222;\" class=\"wpb_text_column has-custom-color wpex-child-inherit-color wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p>Un contr\u00f4leur est un dispositif utilis\u00e9 \u00e0 la fois dans les disques durs et les disques SSD pour communiquer avec le dispositif h\u00f4te et g\u00e9rer le processus de stockage des donn\u00e9es. Le contr\u00f4leur d'un disque dur SSD g\u00e8re \u00e9galement un plus grand nombre d'op\u00e9rations techniques, notamment le nivellement de l'usure et le ramassage des d\u00e9chets (voir les d\u00e9finitions ci-dessus).<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div><div class=\"vc_row wpb_row vc_row-fluid vc_column-gap-25 wpex-vc-full-width-row wpex-vc-full-width-row--centered wpex-relative\"><div class=\"wpb_column vc_column_container vc_col-sm-6 vc_hidden-md vc_hidden-sm vc_hidden-xs\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><style>.vcex-heading.vcex_69de6a2f43bcf{font-size:2em;font-weight:600;line-height:1.2;}@media (max-width:959px){.vcex-heading.vcex_69de6a2f43bcf{font-size:1.5em;}}@media (max-width:767px){.vcex-heading.vcex_69de6a2f43bcf{font-size:1.5em;}}@media (max-width:479px){.vcex-heading.vcex_69de6a2f43bcf{font-size:1.5em;}}<\/style><h3 class=\"vcex-heading vcex-heading-plain vcex-module wpex-heading wpex-text-2xl wpex-h3 vc_custom_1718649459705 vcex_69de6a2f43bcf\"><span class=\"vcex-heading-inner wpex-inline-block\">Collecte des ordures<\/span><\/h3>\n\t<div style=\"color:#222222;\" class=\"wpb_text_column has-custom-color wpex-child-inherit-color wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p>Comme l'indique TechTerms.com, \"NAND n'est pas un acronyme. Il s'agit plut\u00f4t de l'abr\u00e9viation de \"NOT AND\", un op\u00e9rateur bool\u00e9en et une porte logique. L'op\u00e9rateur NAND produit une valeur FAUX uniquement si les deux valeurs de ses deux entr\u00e9es sont VRAIES. On peut l'opposer \u00e0 l'op\u00e9rateur NOR, qui ne produit une valeur VRAIE que si les deux entr\u00e9es sont fausses\".<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-6\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><style>.vcex-heading.vcex_69de6a2f44ae8{font-size:2em;font-weight:600;line-height:1.2;}@media (max-width:959px){.vcex-heading.vcex_69de6a2f44ae8{font-size:1.5em;}}@media (max-width:767px){.vcex-heading.vcex_69de6a2f44ae8{font-size:1.5em;}}@media (max-width:479px){.vcex-heading.vcex_69de6a2f44ae8{font-size:1.5em;}}<\/style><h3 class=\"vcex-heading vcex-heading-plain vcex-module wpex-heading wpex-text-2xl wpex-h3 vc_custom_1718649497933 vcex_69de6a2f44ae8\"><span class=\"vcex-heading-inner wpex-inline-block\">M.2<\/span><\/h3>\n\t<div style=\"color:#222222;\" class=\"wpb_text_column has-custom-color wpex-child-inherit-color wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p>Cette interface physique, anciennement connue sous le nom de Next Generation Form Factor (NGFF), est une sp\u00e9cification pour les cartes d'extension d'ordinateur mont\u00e9es \u00e0 l'int\u00e9rieur et les connecteurs associ\u00e9s. Elle remplace la norme mSATA, qui utilise la disposition physique et les connecteurs de la mini-carte PCI Express.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div><div class=\"vc_row wpb_row vc_row-fluid vc_column-gap-25 wpex-vc-full-width-row wpex-vc-full-width-row--centered wpex-relative\"><div class=\"wpb_column vc_column_container vc_col-sm-4 vc_hidden-md vc_hidden-sm vc_hidden-xs\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><style>.vcex-heading.vcex_69de6a2f4575d{font-size:2em;font-weight:600;line-height:1.2;}@media (max-width:959px){.vcex-heading.vcex_69de6a2f4575d{font-size:1.5em;}}@media (max-width:767px){.vcex-heading.vcex_69de6a2f4575d{font-size:1.5em;}}@media (max-width:479px){.vcex-heading.vcex_69de6a2f4575d{font-size:1.5em;}}<\/style><h3 class=\"vcex-heading vcex-heading-plain vcex-module wpex-heading wpex-text-2xl wpex-h3 vc_custom_1718649514190 vcex_69de6a2f4575d\"><span class=\"vcex-heading-inner wpex-inline-block\">BIT<\/span><\/h3>\n\t<div style=\"color:#222222;\" class=\"wpb_text_column has-custom-color wpex-child-inherit-color wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p>Le processus par lequel le contr\u00f4leur \u00e9quilibre l'\u00e9criture et l'effacement des donn\u00e9es sur la zone de stockage d'un disque SSD est le nivellement de l'usure. L'id\u00e9e est similaire \u00e0 la rotation des pneus de votre voiture et \u00e0 l'inclusion de la roue de secours dans la rotation afin de r\u00e9partir l'usure de mani\u00e8re \u00e9gale sur tous les pneus. Dans le cas d'un disque SSD, l'utilisation est r\u00e9partie sur toutes les cellules disponibles afin de prolonger la dur\u00e9e de vie du support.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-4\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><style>.vcex-heading.vcex_69de6a2f46230{font-size:2em;font-weight:600;line-height:1.2;}@media (max-width:959px){.vcex-heading.vcex_69de6a2f46230{font-size:1.5em;}}@media (max-width:767px){.vcex-heading.vcex_69de6a2f46230{font-size:1.5em;}}@media (max-width:479px){.vcex-heading.vcex_69de6a2f46230{font-size:1.5em;}}<\/style><h3 class=\"vcex-heading vcex-heading-plain vcex-module wpex-heading wpex-text-2xl wpex-h3 vc_custom_1718649542985 vcex_69de6a2f46230\"><span class=\"vcex-heading-inner wpex-inline-block\">Nivellement de l'usure<\/span><\/h3>\n\t<div style=\"color:#222222;\" class=\"wpb_text_column has-custom-color wpex-child-inherit-color wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p>Le processus par lequel le contr\u00f4leur \u00e9quilibre l'\u00e9criture et l'effacement des donn\u00e9es sur la zone de stockage d'un disque SSD est le nivellement de l'usure. L'id\u00e9e est similaire \u00e0 la rotation des pneus de votre voiture et \u00e0 l'inclusion de la roue de secours dans la rotation afin de r\u00e9partir l'usure de mani\u00e8re \u00e9gale sur tous les pneus. Dans le cas d'un disque SSD, l'utilisation est r\u00e9partie sur toutes les cellules disponibles afin de prolonger la dur\u00e9e de vie du support.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-4 vc_hidden-md vc_hidden-sm vc_hidden-xs\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><style>.vcex-heading.vcex_69de6a2f46c61{font-size:2em;font-weight:600;line-height:1.2;}@media (max-width:959px){.vcex-heading.vcex_69de6a2f46c61{font-size:1.5em;}}@media (max-width:767px){.vcex-heading.vcex_69de6a2f46c61{font-size:1.5em;}}@media (max-width:479px){.vcex-heading.vcex_69de6a2f46c61{font-size:1.5em;}}<\/style><h3 class=\"vcex-heading vcex-heading-plain vcex-module wpex-heading wpex-text-2xl wpex-h3 vc_custom_1718649556194 vcex_69de6a2f46c61\"><span class=\"vcex-heading-inner wpex-inline-block\">NAND<\/span><\/h3>\n\t<div style=\"color:#222222;\" class=\"wpb_text_column has-custom-color wpex-child-inherit-color wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p>Comme l'indique TechTerms.com, \"NAND n'est pas un acronyme. Il s'agit plut\u00f4t de l'abr\u00e9viation de \"NOT AND\", un op\u00e9rateur bool\u00e9en et une porte logique. L'op\u00e9rateur NAND produit une valeur FAUX uniquement si les deux valeurs de ses deux entr\u00e9es sont VRAIES. On peut l'opposer \u00e0 l'op\u00e9rateur NOR, qui ne produit une valeur VRAIE que si les deux entr\u00e9es sont fausses\".<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div><div class=\"vc_row wpb_row vc_row-fluid vc_column-gap-25 wpex-vc-full-width-row wpex-vc-full-width-row--centered wpex-relative\"><div class=\"wpb_column vc_column_container vc_col-sm-4 vc_hidden-md vc_hidden-sm vc_hidden-xs\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><style>.vcex-heading.vcex_69de6a2f478b3{font-size:2em;font-weight:600;line-height:1.2;}@media (max-width:959px){.vcex-heading.vcex_69de6a2f478b3{font-size:1.5em;}}@media (max-width:767px){.vcex-heading.vcex_69de6a2f478b3{font-size:1.5em;}}@media (max-width:479px){.vcex-heading.vcex_69de6a2f478b3{font-size:1.5em;}}<\/style><h3 class=\"vcex-heading vcex-heading-plain vcex-module wpex-heading wpex-text-2xl wpex-h3 vc_custom_1718649570426 vcex_69de6a2f478b3\"><span class=\"vcex-heading-inner wpex-inline-block\">U.2<\/span><\/h3>\n\t<div style=\"color:#222222;\" class=\"wpb_text_column has-custom-color wpex-child-inherit-color wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p>U.2 est l'interface de c\u00e2ble physique externe am\u00e9lior\u00e9e, anciennement connue sous le nom de Sata Express, pour connecter des p\u00e9riph\u00e9riques de stockage externes au port PCI Express sur le fond de panier de l'ordinateur.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-4\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><style>.vcex-heading.vcex_69de6a2f4830a{font-size:2em;font-weight:600;line-height:1.2;}@media (max-width:959px){.vcex-heading.vcex_69de6a2f4830a{font-size:1.5em;}}@media (max-width:767px){.vcex-heading.vcex_69de6a2f4830a{font-size:1.5em;}}@media (max-width:479px){.vcex-heading.vcex_69de6a2f4830a{font-size:1.5em;}}<\/style><h3 class=\"vcex-heading vcex-heading-plain vcex-module wpex-heading wpex-text-2xl wpex-h3 vc_custom_1718649587068 vcex_69de6a2f4830a\"><span class=\"vcex-heading-inner wpex-inline-block\">TRIM<\/span><\/h3>\n\t<div style=\"color:#222222;\" class=\"wpb_text_column has-custom-color wpex-child-inherit-color wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p>L'action qui identifie les blocs de donn\u00e9es qui ne sont plus n\u00e9cessaires (sur un disque SSD) et qui peuvent \u00eatre effac\u00e9s pour \u00eatre r\u00e9utilis\u00e9s. Ce processus est rapide et, dans la plupart des cas, automatique.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><div class=\"wpb_column vc_column_container vc_col-sm-4 vc_hidden-md vc_hidden-sm vc_hidden-xs\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><style>.vcex-heading.vcex_69de6a2f48cf7{font-size:2em;font-weight:600;line-height:1.2;}@media (max-width:959px){.vcex-heading.vcex_69de6a2f48cf7{font-size:1.5em;}}@media (max-width:767px){.vcex-heading.vcex_69de6a2f48cf7{font-size:1.5em;}}@media (max-width:479px){.vcex-heading.vcex_69de6a2f48cf7{font-size:1.5em;}}<\/style><h3 class=\"vcex-heading vcex-heading-plain vcex-module wpex-heading wpex-text-2xl wpex-h3 vc_custom_1718649600941 vcex_69de6a2f48cf7\"><span class=\"vcex-heading-inner wpex-inline-block\">Cycle P\/E<\/span><\/h3>\n\t<div style=\"color:#222222;\" class=\"wpb_text_column has-custom-color wpex-child-inherit-color wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p>Le cycle P\/E (Program Erase Cycle) permet de mesurer le nombre de fois o\u00f9 les zones de stockage d'un lecteur \u00e0 semi-conducteurs peuvent \u00eatre \u00e9crites, effac\u00e9es, puis r\u00e9utilis\u00e9es.<\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div><div class=\"vc_row wpb_row vc_row-fluid vc_custom_1661794759383 vc_row-o-content-middle vc_row-flex wpex-vc-full-width-row wpex-vc-full-width-row--centered wpex-relative wpex-vc_row-has-fill wpex-vc-reset-negative-margin\"><div class=\"wpb_column vc_column_container vc_col-sm-12\"><div class=\"vc_column-inner\"><div class=\"wpb_wrapper\"><div class=\"vc_separator wpb_content_element vc_separator_align_center vc_sep_width_100 vc_sep_dashed vc_sep_border_width_3 vc_sep_pos_align_center vc_separator_no_text vc_sep_color_white wpb_content_element  wpb_content_element\" ><span class=\"vc_sep_holder vc_sep_holder_l\"><span class=\"vc_sep_line\"><\/span><\/span><span class=\"vc_sep_holder vc_sep_holder_r\"><span class=\"vc_sep_line\"><\/span><\/span>\n<\/div><\/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\"><style>.vcex-animated-text.vcex_69de6a2f49d65{text-align:start;color:#1c1c1c;font-size:3.5em;}@media (max-width:1024px){.vcex-animated-text.vcex_69de6a2f49d65{font-size:2em;}}@media (max-width:959px){.vcex-animated-text.vcex_69de6a2f49d65{font-size:2em;}}@media (max-width:767px){.vcex-animated-text.vcex_69de6a2f49d65{font-size:2em;}}@media (max-width:479px){.vcex-animated-text.vcex_69de6a2f49d65{font-size:2em;}}<\/style><h2 class=\"vcex-animated-text vcex-module wpex-m-0 wpex-text-xl wpex-text-1 wpex-font-semibold wpex-leading-none vcex-typed-text-wrap wpex-text-left vc_custom_1718649800967 vcex_69de6a2f49d65\"><span class=\"vcex-animated-text__before vcex-typed-text-before vcex-before\">R\u00e9cup\u00e9ration de donn\u00e9es SSD<\/span> <span class=\"vcex-animated-text__inner vcex-typed-text-inner vcex-typed-text-css wpex-inline-block wpex-max-w-100\"><span class=\"screen-reader-text\"><\/span><span class=\"vcex-animated-text__placeholder vcex-ph wpex-inline-block wpex-invisible\"><\/span><span class=\"vcex-animated-text__content vcex-typed-text\" aria-hidden=\"true\" data-settings=\"{&quot;loop&quot;:false,&quot;showCursor&quot;:false,&quot;typeSpeed&quot;:40,&quot;backDelay&quot;:500,&quot;backSpeed&quot;:0,&quot;startDelay&quot;:2000}\" data-strings=\"[]\"><\/span><\/span><\/h2>\n\t<div style=\"color:#222222;\" class=\"wpb_text_column has-custom-color wpex-child-inherit-color wpb_content_element\" >\n\t\t<div class=\"wpb_wrapper\">\n\t\t\t<p>La r\u00e9cup\u00e9ration des donn\u00e9es des disques SSD est beaucoup plus complexe que celle des disques durs.<\/p>\n<p>Les contr\u00f4leurs de disques durs \u00e0 semi-conducteurs de la g\u00e9n\u00e9ration actuelle sont dot\u00e9s de technologies en constante \u00e9volution, telles que la compression, la d\u00e9duplication et les protocoles de cryptage de haut niveau. Ils prot\u00e8gent la s\u00e9curit\u00e9 des donn\u00e9es stock\u00e9es et offrent une protection des donn\u00e9es jusqu'\u00e0 100 fois sup\u00e9rieure \u00e0 celle des principaux disques durs d'entreprise.<\/p>\n<p>Cependant, ces caract\u00e9ristiques complexes et hautement exclusives peuvent cr\u00e9er des d\u00e9fis de r\u00e9cup\u00e9ration de donn\u00e9es lorsqu'une d\u00e9faillance inattendue se produit. Pour surmonter l'obstacle du cryptage, les ing\u00e9nieurs de r\u00e9cup\u00e9ration de donn\u00e9es de DriveSavers sont form\u00e9s et certifi\u00e9s par les principaux fournisseurs de cryptage pour r\u00e9cup\u00e9rer en toute s\u00e9curit\u00e9 les donn\u00e9es crypt\u00e9es au niveau des fichiers et du mat\u00e9riel \u00e0 partir des disques SSD et d'autres p\u00e9riph\u00e9riques de stockage.<\/p>\n<p>Dans certains cas, la r\u00e9cup\u00e9ration des donn\u00e9es d'un disque dur SSD n\u00e9cessite des techniques de microsoudure avanc\u00e9es pour transplanter des micropuces critiques sur un circuit imprim\u00e9 fonctionnel. Les micropuces doivent \u00eatre manipul\u00e9es avec le plus grand soin. Si les composants sont mal manipul\u00e9s, des dommages microscopiques peuvent se produire. En outre, une chaleur ou une force excessive peut causer des dommages permanents aux micropuces, rendant les donn\u00e9es irr\u00e9cup\u00e9rables.<\/p>\n<p>Gr\u00e2ce \u00e0 une recherche et un d\u00e9veloppement diligents et d\u00e9di\u00e9s, les ing\u00e9nieurs de DriveSavers ont d\u00e9termin\u00e9 les techniques optimales pour une r\u00e9cup\u00e9ration s\u00fbre et efficace des donn\u00e9es tout en minimisant le risque de perte de donn\u00e9es. Ces techniques n\u00e9cessitent un \u00e9quipement sp\u00e9cialis\u00e9 et une approche habile.<\/p>\n<p><a href=\"\/fr-fr\/services-de-recuperation-des-donnees\/appareils-pris-en-charge\/recuperation-de-donnees-sur-disque-dur-ssd\/\">En savoir plus sur la r\u00e9cup\u00e9ration de donn\u00e9es sur les disques d'\u00e9tat solide.<\/a><\/p>\n\n\t\t<\/div>\n\t<\/div>\n<\/div><\/div><\/div><\/div><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"A solid-state drive (SSD) is one of the most popular, fastest, and energy-efficient solutions for storing and sharing information. Anyone dealing with SSD technology should know a few things about how these unique devices work. DriveSavers data recovery engineers have prepared the following \u201ccheat sheet\u201d to help you understand the technology behind these advanced data&hellip;","protected":false},"author":25,"featured_media":61942,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[264],"tags":[284],"post_series":[],"class_list":["post-7123","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-ssd","entry","has-media"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.9 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>SSD 101: Guide to Solid-State Drive<\/title>\n<meta name=\"description\" content=\"A solid-state drive (SSD) is one of the most popular, fastest, and energy-efficient solutions for storing and sharing information. Here\u2019s a \u201ccheat sheet\u201d from DriveSavers to help you understand the technology behind these advanced data storage machines.\" \/>\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\/ssd-101\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SSD 101: Guide to Solid-State Drive\" \/>\n<meta property=\"og:url\" content=\"https:\/\/drivesaversdatarecovery.com\/fr-fr\/blog\/ssd-101\/\" \/>\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=\"2022-09-02T16:33:01+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-05T13:27:53+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/drivesaversdatarecovery.com\/wp-content\/uploads\/2022\/09\/SSD-101.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"627\" \/>\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=\"7 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"TechArticle\",\"@id\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/blog\\\/ssd-101\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/blog\\\/ssd-101\\\/\"},\"author\":{\"name\":\"Mike Cobb\",\"@id\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/#\\\/schema\\\/person\\\/71a038c3b180b1f2df821d2b015b8ee6\"},\"headline\":\"SSD 101: Guide to Solid-State Drive\",\"datePublished\":\"2022-09-02T16:33:01+00:00\",\"dateModified\":\"2026-03-05T13:27:53+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/blog\\\/ssd-101\\\/\"},\"wordCount\":1978,\"publisher\":{\"@id\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/blog\\\/ssd-101\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/wp-content\\\/uploads\\\/2022\\\/09\\\/SSD-101.jpg\",\"keywords\":[\"SSD\"],\"articleSection\":[\"DriveSavers Blog\"],\"inLanguage\":\"fr-FR\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/blog\\\/ssd-101\\\/\",\"url\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/blog\\\/ssd-101\\\/\",\"name\":\"SSD 101: Guide to Solid-State Drive\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/blog\\\/ssd-101\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/blog\\\/ssd-101\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/drivesaversdatarecovery.com\\\/wp-content\\\/uploads\\\/2022\\\/09\\\/SSD-101.jpg\",\"datePublished\":\"2022-09-02T16:33:01+00:00\",\"dateModified\":\"2026-03-05T13:27:53+00:00\",\"description\":\"A solid-state drive (SSD) is one of the most popular, fastest, and energy-efficient solutions for storing and sharing information. 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