{"id":17020,"date":"2025-11-26T12:14:26","date_gmt":"2025-11-26T12:14:26","guid":{"rendered":"https:\/\/pqc.es\/a-vueltas-con-los-tier\/"},"modified":"2026-02-23T15:40:09","modified_gmt":"2026-02-23T15:40:09","slug":"a-vueltas-con-los-tier","status":"publish","type":"post","link":"https:\/\/pqc.es\/en\/a-vueltas-con-los-tier\/","title":{"rendered":"A vueltas con los Tier"},"content":{"rendered":"<div class=\"news-content-block\">\n<p>Recordatorio r&aacute;pido sobre los Tier (por si acaso):<\/p>\n<p><strong>Cada cierto tiempo<\/strong> me encuentro con <strong>art&iacute;culos o notas de prensa sobre Data Centers que confunden<\/strong> &mdash;y a veces <strong>mezclan<\/strong> sin pudor&mdash; los <strong>conceptos de certificaci&oacute;n Tier <\/strong>del Uptime Institute. Aqu&iacute; va un <strong>peque&ntilde;o recordatorio<\/strong>:<\/p>\n<h3><strong>Tier III:<\/strong><\/h3>\n<p><em>Su gran<\/em><strong><em>&nbsp;<\/em><\/strong>baza es la <strong>mantenibilidad concurrente<\/strong>: cualquier <strong>componente<\/strong> (s&iacute;, cualquiera) se puede <strong>retirar o sustituir<\/strong> de forma planificada <strong>sin que el servicio IT se vea afectado<\/strong>. Y la topolog&iacute;a b&aacute;sica el famoso <strong>&ldquo;N+1&rdquo;.<\/strong><\/p>\n<h3><strong>Tier IV:&nbsp;<\/strong><\/h3>\n<p><strong>A&ntilde;ade tres capas extra <\/strong>sobre el <em>Tier III.<\/em> <strong>Compartimentaci&oacute;n<\/strong>, para que un fallo no afecte a las dos ramas. <strong>Respuesta aut&oacute;noma<\/strong>, porque el sistema se las apa&ntilde;a solo ante cualquier fallo (<strong>sin contar<\/strong> cortes externos de <strong>red, agua o gas<\/strong>, que <strong>no valen como &ldquo;fallo&rdquo;<\/strong>). Y el <strong><em>continuous cooling<\/em><\/strong>, que garantiza la <strong>refrigeraci&oacute;n <\/strong>durante las transiciones entre suministro y respaldo. Y se puede tener un Tier IV con N+1, no necesariamente con 2N, porque adem&aacute;s lo hemos hecho. (<a href=\"https:\/\/uptimeinstitute.com\/clients\/sonda?utm_campaign=Oktopost-Client+Stories&amp;utm_content=Oktopost-linkedin&amp;utm_medium=social&amp;utm_source=linkedin\" target=\"_blank\"><em>Tier IV de Sonda en Chile<\/em><\/a>).<\/p>\n<p>&nbsp;<\/p>\n<p>El <strong>objetivo final<\/strong> de ambos niveles es el mismo: <strong>disponibilidad<\/strong> <strong>total<\/strong> (100%), aunque la pr&aacute;ctica nos presente <strong>cifras<\/strong> <strong>reales de parada anual<\/strong> de unos <strong>27 minutos para un Tier IV<\/strong> <strong>y<\/strong> <strong>una hora y media<\/strong> para un <strong>Tier III<\/strong>.<\/p>\n<p><strong>La estad&iacute;stica es as&iacute;.<\/strong> Si t&uacute; te comes un pollo y yo ninguno, <strong>la media<\/strong> es de medio pollo cada uno y, adem&aacute;s, y por si fuese poco, me he quedado sin comer y adem&aacute;s se me ha ca&iacute;do el Data Center. <em>Y el del pollo tan pichi.<\/em><\/p>\n<p>Y por cierto, <strong>no hay un dise&ntilde;o &ldquo;&uacute;nico&rdquo;<\/strong> para lograr cada nivel. <strong>Cada Data Center puede llegar a esos objetivos por caminos distintos<\/strong>&hellip; aunque no todos lo consigan.<\/p>\n<blockquote>\n<p><strong>Christian Lipperheide<\/strong><\/p>\n<\/blockquote>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Identifiquemos correctamente los conceptos de certificaci\u00f3n<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[73],"tags":[],"class_list":["post-17020","post","type-post","status-publish","format-standard","hentry","category-data-center"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>A vueltas con los Tier | PQC<\/title>\n<meta name=\"description\" content=\"Identifiquemos correctamente los 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