{"id":6675,"date":"2017-06-05T15:45:11","date_gmt":"2017-06-05T15:45:11","guid":{"rendered":"https:\/\/www.apen.es\/?page_id=6675"},"modified":"2025-07-14T10:57:13","modified_gmt":"2025-07-14T10:57:13","slug":"disc-ssd","status":"publish","type":"page","link":"https:\/\/www.apen.es\/ca\/glosario-de-informatica\/disco-ssd\/","title":{"rendered":"Disc SSD"},"content":{"rendered":"

QU\u00c8 \u00c9S UN DISC SSD?<\/h2>\n\n\n
\n
\"\"<\/figure>\n<\/div>\n\n\n

El Disc SSD \u00e9s el que anomenem Unitat d'estat s\u00f2lid (Solid-State Drive) \u00e9s un dispositiu d'emmagatzematge de dades, que utilitza una mem\u00f2ria no vol\u00e0til, com la mem\u00f2ria flaix, en lloc dels discos magn\u00e8tics de les unitats de discs durs HDD.<\/p>\n\n\n\n

Les unitats d\u201festat s\u00f2lid o SSD s\u00f3n menys sensibles als cops, ja que no disposen de parts m\u00f2bils. Tenen menys temps d'acc\u00e9s i de lat\u00e8ncia, i aix\u00f2 representa una millora en el rendiment exponencial, quant als temps de c\u00e0rrega dels sistemes operatius.<\/p>\n\n\n\n

Tenen un nombre limitat de cicles d'escriptura i la seva vida \u00fatil \u00e9s for\u00e7a limitada, i es pot produir una p\u00e8rdua de totes les dades de manera inesperada i irrecuperable.<\/p>\n\n\n\n

La interf\u00edcie que utilitzen les SSD s'anomena SATA i \u00e9s la mateixa que la dels discs durs. Es poden intercanviar, sense haver de rec\u00f3rrer a adaptadors o targetes dexpansi\u00f3, per compatibilitzar-la amb lequip.<\/p>\n\n\n\n

Des de l'any 2010, la majoria dels SSD utilitzen la mem\u00f2ria flaix, que est\u00e0 basada en portes NAND i \u00e9s capa\u00e7 de retenir les dades sense cap tipus d'alimentaci\u00f3 el\u00e8ctrica.<\/p>\n\n\n\n

El disc SSD s'utilitza per anomenar la nova generaci\u00f3 de dispositius d'emmagatzematge per a ordinadors. Els SSD poden superar molts dels problemes que ens trob\u00e0vem amb els discos durs convencionals.<\/p>\n\n\n\n

Avantatges dels SSD<\/strong><\/p>\n\n\n\n

La rapidesa<\/strong> \u00e9s un dels grans avantatges, pel que fa a la cerca de dades ia les lectures. El temps despera per obtenir el flux de dades sempre \u00e9s el mateix i no cal desfragmentar perqu\u00e8 estiguin o no contig\u00fces les dades, les unitats funcionen igual de b\u00e9.<\/p>\n\n\n\n

Compta amb una major resist\u00e8ncia<\/strong>, perqu\u00e8 no disposa de components m\u00f2bils i respon millor a les vibracions i als cops.<\/p>\n\n\n\n

El consum \u00e9s menor<\/strong>, perqu\u00e8 no necessita tanta pot\u00e8ncia per funcionar. Es desgasta menys degut a la calor i per aix\u00f2 la seva vida \u00fatil augmenta.<\/p>\n\n\n\n

Tamb\u00e9 fa menys soroll <\/strong>i aix\u00f2 suposa un gran avantatge per al consumidor.<\/p>\n\n\n\n

Tipus de SSD<\/strong><\/p>\n\n\n\n

Hi ha diferents tipus de SSD, depenent de la seva connexi\u00f3 al PC:<\/p>\n\n\n\n

PCle SS<\/strong>: La unitat es connecta a un port PCI Express, com si fos una targeta interna addicional. D'aquesta manera poden funcionar molt m\u00e9s r\u00e0pidament i no estar limitat per l'est\u00e0ndard SATA.<\/p>\n\n\n\n

Sata SSD<\/strong>: Usa el mateix connector que un disc dur normal. Es converteix en l\u00fanica opci\u00f3 per afegir un SSD o un port\u00e0til.<\/p>\n\n\n\n

SLC:<\/strong> Acr\u00f2nim de Single Level Cell. \u00c9s la primera que es va utilitzar i actualment les podem observar en entorns de servits, a causa del seu cost alt.<\/p>\n\n\n\n

MLC<\/strong>: Permeten dos bits per cel\u00b7la i s\u00f3n capa\u00e7os d'emmagatzemar quatre estats<\/p>\n\n\n\n

TLC<\/strong>: En aquest cas s\u00f3n tres bits per cel\u00b7la i es poden emmagatzemar quatre estats<\/p>","protected":false},"excerpt":{"rendered":"

QU\u00c8 \u00c9S UN DISC SSD? El Disc SSD \u00e9s el que anomenem Unitat d'estat s\u00f2lid (Solid-State Drive) \u00e9s un dispositiu d'emmagatzematge de dades, que utilitza una mem\u00f2ria no vol\u00e0til, com la mem\u00f2ria flaix, en lloc dels discos magn\u00e8tics de les unitats de discs durs HDD. Les unitats d'estat s\u00f2lid o SSD\u2026<\/p>","protected":false},"author":4,"featured_media":0,"parent":6185,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-landing-glosario.php","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":"","footnotes":""},"class_list":["post-6675","page","type-page","status-publish","hentry"],"acf":[],"yoast_head":"\nDisco SSD - Apen Inform\u00e1tica<\/title>\n<meta name=\"description\" content=\"\u00bfQue es un disco SSD? Un disco SSD es un dispositivo de almacenamiento de datos, que usa una memoria no vol\u00e1til, como la memoria flash. 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