I frequently receive questions from clients about what downtime to expect during a migration. This question reveals that some still consider the Big Bang, the sudden switch from one solution to another, as the only migration option. In fact, the Big Bang is no longer considered best practice.<\/p>\n\n\n\n
The Big Bang<\/strong> in IT means that on Friday, the last work is done with Solution A, and on Monday, Solution B is operational. This method can only work in small teams that can fully support the IT during the transition. The entire process must be extremely well-prepared, as there is no error tolerance and no time buffer available. For the actual migration of data, a short downtime is typically required, which can span a weekend; for large data volumes, more time may also be needed.<\/p>\n\n\n\n A key disadvantage of the Big Bang is that it is difficult to control. In large organizations where many departments and processes are involved, this approach is not viable. The risks are too high, and the handovers are often too complex.<\/p>\n\n\n\n Large organizations tend to prefer a Step-by-Step Migration<\/strong>, where departments or modules are transitioned one by one. While this method takes longer, it offers significant advantages in terms of control and planning. Learnings from the first department can be directly incorporated into the next migration. If something goes wrong with the first department, the team can make adjustments to ensure smoother next steps.<\/p>\n\n\n\n Another advantage is that the data can also be migrated step by step. This eliminates the need for complete downtime, as not all data has to be switched at once. This reduces the risk of outages and helps ensure that business operations continue as smoothly as possible.<\/p>\n\n\n\n For such a Step-by-Step Migration<\/strong>, a parallel operation of the solutions is necessary. This means that both the old and the new solution are operated concurrently for a time, which requires additional planning.<\/p>\n\n\n\n To keep migration costs in check, it is essential to create a detailed project plan before the migration. The economic feasibility of a migration is another important topic that should be carefully considered.<\/p>\n\n\n\n In conclusion, the question of downtime in migrations is often misleading. Instead of focusing on downtime, companies should consider the entire migration process. The choice between Big Bang and Step-by-Step Migration can be crucial for the success of the transition. While the Big Bang is only feasible for smaller teams, the Step-by-Step Migration offers better control, flexibility, and a lower risk to ongoing operations. A well-thought-out project plan ensures the migration is economical and efficient, which is essential for long-term success.<\/p>","protected":false},"excerpt":{"rendered":" Immer wieder bekomme ich von Kunden die Frage gestellt, mit welcher Downtime sie bei einer Migration zu rechnen haben. Diese Frage offenbart, dass einige noch den Big Bang, die pl\u00f6tzliche Umstellung von einer L\u00f6sung auf die andere, als einzige Umstellungsm\u00f6glichkeit betrachten. Tats\u00e4chlich ist der Big Bang aber nicht mehr Best Practice. Der Big Bang im… Read More »Downtime during migrations? Why that's the wrong question.<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":19771,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-19770","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-allgemein"],"_links":{"self":[{"href":"https:\/\/ericfischer.eu\/en\/wp-json\/wp\/v2\/posts\/19770","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ericfischer.eu\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ericfischer.eu\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ericfischer.eu\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ericfischer.eu\/en\/wp-json\/wp\/v2\/comments?post=19770"}],"version-history":[{"count":1,"href":"https:\/\/ericfischer.eu\/en\/wp-json\/wp\/v2\/posts\/19770\/revisions"}],"predecessor-version":[{"id":19772,"href":"https:\/\/ericfischer.eu\/en\/wp-json\/wp\/v2\/posts\/19770\/revisions\/19772"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ericfischer.eu\/en\/wp-json\/wp\/v2\/media\/19771"}],"wp:attachment":[{"href":"https:\/\/ericfischer.eu\/en\/wp-json\/wp\/v2\/media?parent=19770"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ericfischer.eu\/en\/wp-json\/wp\/v2\/categories?post=19770"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ericfischer.eu\/en\/wp-json\/wp\/v2\/tags?post=19770"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Step-by-Step Migration: The better approach<\/h3>\n\n\n\n
Conclusion<\/h3>\n\n\n\n