{"id":49536,"date":"2024-07-01T00:00:00","date_gmt":"2024-06-30T22:00:00","guid":{"rendered":"https:\/\/jotelulu.com\/blog\/diferencas-entre-failover-por-dns-ou-ip-para-o-disaster-recovery-dr\/"},"modified":"2024-07-01T00:00:00","modified_gmt":"2024-06-30T22:00:00","slug":"failover-dns-ip-disaster-recovery","status":"publish","type":"post","link":"https:\/\/jotelulu.com\/pt-pt\/blog\/failover-dns-ip-disaster-recovery\/","title":{"rendered":"Diferen\u00e7as entre failover por DNS ou IP para o Disaster Recovery (DR)"},"content":{"rendered":"<p>Junte-se a n&oacute;s neste artigo onde vamos falar sobre as <strong>diferen&ccedil;as entre um procedimento de <em>failover<\/em> por DNS ou por IP para o Disaster Recovery (DR)<\/strong> da Jotelulu.<\/p>\n<p>O servi&ccedil;o de Disaster Recovery (DR) que oferecemos na Jotelulu permite aos nossos clientes ter a garantia de que as suas subscri&ccedil;&otilde;es de Servidores e Desktop Remoto estar&atilde;o seguras, mesmo nos casos em que o CPD onde os servi&ccedil;os est&atilde;o originalmente localizados esteja comprometido.<\/p>\n<p>J&aacute; escrevemos sobre o seu funcionamento no artigo &laquo;<a href=\"https:\/\/jotelulu.com\/pt-pt\/blog\/servico-disaster-recovery-jotelulu-explicado\/\" target=\"_blank\" rel=\"noopener\" class=\"broken_link\">O servi&ccedil;o Disaster Recovery da Jotelulu, explicado<\/a>&laquo;, que pode consultar se quiser saber como funciona. Mas h&aacute; uma coisa que n&atilde;o coment&aacute;mos nesse artigo, e &eacute; a diferen&ccedil;a que podemos encontrar entre um&nbsp;<em>failover<\/em> por DNS ou&nbsp;por IP.<\/p>\n<p>A primeira coisa que devemos saber &eacute; que a sele&ccedil;&atilde;o do modelo <em>failover<\/em> &eacute; feita durante a implementa&ccedil;&atilde;o do servi&ccedil;o DR e que isto pode ser configurado novamente durante o <a href=\"https:\/\/jotelulu.com\/pt-pt\/suporte\/tutoriais\/how-to-reconfigure-your-dr-replication-policy\/\" target=\"_blank\" rel=\"noopener\">processo de reconfigura&ccedil;&atilde;o da r&eacute;plica do DR,<\/a> tendo em ambos os casos um aspeto semelhante ao que se verifica na imagem abaixo.<\/p>\n<p>Para continuar, vamos explicar como funciona cada op&ccedil;&atilde;o e destacaremos as diferen&ccedil;as.<\/p>\n<p>No caso do <strong><em>failover<\/em> por DNS<\/strong>, <strong>a assinatura de origem tem um IP espec&iacute;fico<\/strong>, por exemplo 10.10.10.10, enquanto a assinatura para a qual s&atilde;o feitas as r&eacute;plicas, ou seja, <strong>a assinatura secund&aacute;ria ou de destino, tem outro IP<\/strong>, por exemplo 20.20.20.20. Al&eacute;m disso, existe um <strong>URL com um nome DNS<\/strong> que poderia ser &ldquo;omeuservi&ccedil;o.exemplo.com&rdquo;.<\/p>\n<p>Enquanto a assinatura prim&aacute;ria estiver operacional, o DNS ter&aacute; o endere&ccedil;o &ldquo;omeuservi&ccedil;o.exemplo.com&rdquo; a apontar para o IP 10.10.10.10, enquanto se aplicarmos o procedimento de evacua&ccedil;&atilde;o para o <em>backup<\/em>, o que vai acontecer &eacute; que <strong>o registo DNS<\/strong> do &ldquo;omeuservi&ccedil;o.exemplo.com&rdquo; <strong>apontar&aacute; para o IP de assinatura secund&aacute;ria<\/strong> 20.20.20.20.<\/p>\n<p><figure id=\"attachment_42026\" aria-describedby=\"caption-attachment-42026\" style=\"width: 1440px\" class=\"wp-caption alignnone\"><img decoding=\"async\" data-recalc-dims=\"1\" loading=\"lazy\" class=\"wp-image-42026 size-full\" src=\"https:\/\/i0.wp.com\/jotelulu.com\/wp-content\/uploads\/2024\/07\/Imagen.-Representacion-de-Fail-Over-por-DNS.png?resize=800%2C569&amp;ssl=1\" alt=\"Imagem. Representa&ccedil;&atilde;o de failover por DNS no Disaster Recovery (DR)\" width=\"800\" height=\"569\"><figcaption id=\"caption-attachment-42026\" class=\"wp-caption-text\">Imagem. Representa&ccedil;&atilde;o de failover por DNS no Disaster Recovery (DR)<\/figcaption><\/figure>\n<\/p>\n<p>Por outro lado, quando se decide utilizar o <strong><em>failover<\/em> por IP<\/strong>, o importante ser&aacute; <strong>manter o IP a todo o custo. <\/strong>Assim, inicialmente teremos o <strong>IP da assinatura de origem<\/strong> que ser&aacute;, por exemplo, 10.10.10.10, enquanto <strong>na assinatura secund&aacute;ria n&atilde;o estar&aacute; dispon&iacute;vel qualquer IP<\/strong> at&eacute; que o servi&ccedil;o seja equilibrado. Neste caso, se o procedimento de DR for aplicado, o que vai acontecer &eacute; que o <strong>IP da assinatura de origem ter&aacute; de ser evacuado e apontar para a assinatura secund&aacute;ria<\/strong>.<\/p>\n<p><figure id=\"attachment_42027\" aria-describedby=\"caption-attachment-42027\" style=\"width: 1440px\" class=\"wp-caption alignnone\"><img decoding=\"async\" data-recalc-dims=\"1\" loading=\"lazy\" class=\"wp-image-42027 size-full\" src=\"https:\/\/i0.wp.com\/jotelulu.com\/wp-content\/uploads\/2024\/07\/Imagen.-Representacion-de-Fail-Over-por-IP.png?resize=800%2C569&amp;ssl=1\" alt=\"Imagem. Representa&ccedil;&atilde;o de failover por IP no Disaster Recovery (DR)\" width=\"800\" height=\"569\"><figcaption id=\"caption-attachment-42027\" class=\"wp-caption-text\">Imagem. Representa&ccedil;&atilde;o de failover por IP no Disaster Recovery (DR)<\/figcaption><\/figure>\n<\/p>\n<p>O resultado, no fundo, &eacute; o mesmo: a subscri&ccedil;&atilde;o de Servidores ou Desktop Remoto mant&eacute;m-se operacional perante v&aacute;rias eventualidades, permitindo assim a Gest&atilde;o da Continuidade do Neg&oacute;cio sem <em>downtime<\/em>, algo que poderia ser fatal para a empresa.<\/p>\n<p><figure id=\"attachment_41839\" aria-describedby=\"caption-attachment-41839\" style=\"width: 1929px\" class=\"wp-caption alignnone\"><img decoding=\"async\" data-recalc-dims=\"1\" loading=\"lazy\" class=\"wp-image-41839 size-full\" src=\"https:\/\/i0.wp.com\/jotelulu.com\/wp-content\/uploads\/2024\/06\/Imagen.-Plan-de-replicacion-de-un-DR-en-Jotelulu.jpg?resize=800%2C404&amp;ssl=1\" alt=\"Imagem. Plano de replica&ccedil;&atilde;o de um DR na Jotelulu\" width=\"800\" height=\"404\"><figcaption id=\"caption-attachment-41839\" class=\"wp-caption-text\">Imagem. Plano de replica&ccedil;&atilde;o de um DR na Jotelulu<\/figcaption><\/figure>\n<\/p>\n<p>Para concretizar esta opera&ccedil;&atilde;o &eacute; necess&aacute;rio realizar uma s&eacute;rie de opera&ccedil;&otilde;es na infraestrutura que devem ser transparentes para o utilizador. Isto n&atilde;o &eacute; algo trivial, mas todos os esfor&ccedil;os s&atilde;o importantes para garantir a seguran&ccedil;a dos nossos clientes.<\/p>\n<p>NOTA: Lembremo-nos de que ter um plano de recupera&ccedil;&atilde;o de desastres ajuda-nos a proteger a nossa empresa e a cumprir a <a href=\"https:\/\/pt.wikipedia.org\/wiki\/ISO_27001\" target=\"_blank\" rel=\"noopener\">ISO 27001<\/a> ou a <a href=\"https:\/\/www.iso.org\/standard\/75106.html\" target=\"_blank\" rel=\"noopener\">ISO 22301<\/a>.<\/p>\n<h2>Conclus&otilde;es:<\/h2>\n<p>Como viu neste artigo, compreender as <strong>diferen&ccedil;as entre fazer um procedimento de DNS ou IP failover para Disaster Recovery (DR)<\/strong> &eacute; bastante simples, e a opera&ccedil;&atilde;o &eacute; baseada em conceitos b&aacute;sicos.<\/p>\n<p>Se quiser saber mais sobre o Disaster Recovery (DR) pode aceder ao nosso <a href=\"https:\/\/jotelulu.com\/pt-pt\/blog\/\">blog<\/a> para conhecer a parte te&oacute;rica, em artigos como:<\/p>\n<ul>\n<li><a href=\"https:\/\/jotelulu.com\/pt-pt\/blog\/preocupacoes-configurar-disaster-recovery\/\" target=\"_blank\" rel=\"noopener\">As 10 principais preocupa&ccedil;&otilde;es ao configurar o Disaster Recovery<\/a><\/li>\n<li><a href=\"https:\/\/jotelulu.com\/pt-pt\/blog\/disaster-recovery-rpo-rto-wrt-mtd\/\" target=\"_blank\" rel=\"noopener\">Disaster Recovery: o que significam as siglas RPO, RTO, WRT ou MTD e porque &eacute; que s&atilde;o importantes?<\/a><\/li>\n<li><a href=\"https:\/\/jotelulu.com\/pt-pt\/blog\/porque-disaster-recovery-e-complexo\/\" target=\"_blank\" rel=\"noopener\">Porque &eacute; que o Disaster Recovery &eacute; t&atilde;o complexo?<\/a><\/li>\n<li><a href=\"https:\/\/jotelulu.com\/pt-pt\/blog\/o-que-e-disaster-recovery-porque-precisamos-dele\/\" target=\"_blank\" rel=\"noopener\" class=\"broken_link\">Disaster Recovery: o que &eacute; e porque &eacute; que precisamos dele<\/a><\/li>\n<li><a href=\"https:\/\/jotelulu.com\/pt-pt\/blog\/avaliar-riscos-e-ameacas-nas-pme\/\" target=\"_blank\" rel=\"noopener\">Como avaliar riscos e amea&ccedil;as nas PME<\/a><\/li>\n<li><a href=\"https:\/\/jotelulu.com\/pt-pt\/blog\/perda-dados-pme\/\" target=\"_blank\" rel=\"noopener\">As 5 principais causas de perda de dados nas PME<\/a><\/li>\n<li><a href=\"https:\/\/jotelulu.com\/pt-pt\/blog\/custo-real-investir-seguranca\/\" target=\"_blank\" rel=\"noopener\">Qual &eacute; o custo real de n&atilde;o investir em seguran&ccedil;a?<\/a><\/li>\n<li><a href=\"https:\/\/jotelulu.com\/pt-pt\/blog\/etapas-gerir-incidente-seguranca\/\" target=\"_blank\" rel=\"noopener\" class=\"broken_link\">Etapas para gerir um incidente de seguran&ccedil;a da informa&ccedil;&atilde;o nas TI<\/a><\/li>\n<\/ul>\n<p>Ou visite a nossa <a href=\"https:\/\/jotelulu.com\/pt-pt\/suporte\/tutoriais\/2\/\">sec&ccedil;&atilde;o de tutoriais<\/a>, onde pode encontrar conte&uacute;do como este:<\/p>\n<ul>\n<li><a href=\"https:\/\/jotelulu.com\/pt-pt\/suporte\/tutoriais\/how-to-activate-disaster-recovery-on-jotelulu\/\" target=\"_blank\" rel=\"noopener\">Como ativar o Disaster Recovery da Jotelulu<\/a><\/li>\n<li><a href=\"https:\/\/jotelulu.com\/pt-pt\/suporte\/tutoriais\/how-to-reconfigure-your-dr-replication-policy\/\" target=\"_blank\" rel=\"noopener\">Como configurar a pol&iacute;tica de replica&ccedil;&atilde;o no Disaster Recovery da Jotelulu<\/a><\/li>\n<\/ul>\n<p>Fale connosco se tiver qualquer d&uacute;vida sobre os nossos servi&ccedil;os.<\/p>\n<p>Agradecemos o interesse!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Junte-se a n&oacute;s neste artigo onde vamos falar sobre as diferen&ccedil;as entre um procedimento de failover por DNS ou por IP para o Disaster Recovery (DR) da Jotelulu. O servi&ccedil;o de Disaster Recovery (DR) que oferecemos na Jotelulu permite aos nossos clientes ter a garantia de que as suas subscri&ccedil;&otilde;es de Servidores e Desktop Remoto [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":42024,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[112],"tags":[],"class_list":["post-49536","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-comunicaciones-y-seguridad"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Diferen\u00e7as entre failover por DNS ou IP para o Disaster Recovery (DR) - Jotelulu<\/title>\n<meta name=\"description\" content=\"Neste artigo vamos analisar as diferen\u00e7as entre um procedimento de failover por DNS ou por IP para o Disaster Recovery da Jotelulu.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jotelulu.com\/pt-pt\/blog\/failover-dns-ip-disaster-recovery\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Diferen\u00e7as entre failover por DNS ou IP para o Disaster Recovery (DR) - 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