{"id":3470,"date":"2015-10-15T08:01:00","date_gmt":"2015-10-15T06:01:00","guid":{"rendered":"https:\/\/www.derdack.com\/making-enterprise-alert-highly-available\/"},"modified":"2016-12-19T11:10:37","modified_gmt":"2016-12-19T10:10:37","slug":"making-enterprise-alert-highly-available","status":"publish","type":"post","link":"https:\/\/www.derdack.com\/de\/making-enterprise-alert-highly-available\/","title":{"rendered":"Making Enterprise Alert Highly Available"},"content":{"rendered":"<div><span lang=\"EN-US\">Enterprise Alert is a crucial part of the corporate infrastructure. People rely on critical alerts in order to take according action or in order to prevent disasters.<\/span><\/div>\n<div><span lang=\"EN-US\">Therefore, it is essential that Enterprise Alert is highly available and thus able to send out alerts even if other systems are not working properly anymore. One customer called it \u201cthe last system standing\u201d.<\/span><\/div>\n<div><span lang=\"EN-US\">This blog article describes some standard installation scenarios and how high availability, redundancy and fail-over can be achieved. The list is certainly not complete and intended to give a first overview. The actual setup very much depends on your specific scenario.<\/span><\/div>\n<div><span lang=\"EN-US\">\u00a0<\/span><\/div>\n<div><b><span lang=\"EN-US\">One Enterprise Alert Instance<\/span><\/b><\/div>\n<div><span lang=\"EN-US\">This is the most basic setup where only one instance of Enterprise Alert connects to one SQL Server database.<\/span><\/div>\n<div><\/div>\n<div><span lang=\"EN-US\">Obviously this is no redundant setup, however, you can still use redundant communication channels. For example you can use an SMSC connection for sending SMS text messages and a GSM modem as an independent fail-over link.<\/span><\/div>\n<div><span lang=\"EN-US\">\u00a0<\/span><\/div>\n<div style=\"clear: both; text-align: center;\"><a style=\"margin-left: 1em; margin-right: 1em;\" href=\"https:\/\/www.derdack.com\/wp-content\/uploads\/sites\/5\/2015\/10\/a1-1.png\"><img loading=\"lazy\" style=\"background-color: #ffffff;\" src=\"https:\/\/www.derdack.com\/wp-content\/uploads\/sites\/5\/2015\/10\/a1-1-300x142.png\" width=\"320\" height=\"151\" border=\"0\" \/><\/a><\/div>\n<p>&nbsp;<\/p>\n<div style=\"clear: both; text-align: center;\"><\/div>\n<div><b><span lang=\"EN-US\">Two Instances of Enterprise Alert connect to a SQL Server Cluster<\/span><\/b><\/div>\n<p><span lang=\"EN-US\">Two instances of Enterprise Alert, installed on two different servers, connect to one SQL Server Cluster. The two instances can work in an Active \/ Active or Active \/ Passive mode.<\/span><\/p>\n<div style=\"clear: both; text-align: center;\"><\/div>\n<div><\/div>\n<div style=\"background-color: white; clear: both; text-align: center;\"><a style=\"margin-left: 1em; margin-right: 1em;\" href=\"https:\/\/www.derdack.com\/wp-content\/uploads\/sites\/5\/2015\/10\/a2.png\"><img loading=\"lazy\" style=\"background-color: #ffffff;\" src=\"https:\/\/www.derdack.com\/wp-content\/uploads\/sites\/5\/2015\/10\/a2-300x226.png\" width=\"320\" height=\"241\" border=\"0\" \/><\/a><\/div>\n<div><\/div>\n<div><b><span lang=\"EN-US\">Redundant Sites<\/span><\/b><\/div>\n<div><span lang=\"EN-US\">One set of two redundant Enterprise Alert instances is set up in one data center as described above. A second set of two redundant Enterprise Alert instances is configured in a second data center on a separate site.<\/span><\/div>\n<div><span lang=\"EN-US\">Both SQL Server database Clusters are connected via Always-On. If one site goes down completely, the second site takes over.<\/span><\/div>\n<div><span lang=\"EN-US\">\u00a0<\/span><\/div>\n<div style=\"clear: both; text-align: center;\"><a style=\"margin-left: 1em; margin-right: 1em;\" href=\"https:\/\/www.derdack.com\/wp-content\/uploads\/sites\/5\/2015\/10\/a3.png\"><img loading=\"lazy\" style=\"background-color: #ffffff;\" src=\"https:\/\/www.derdack.com\/wp-content\/uploads\/sites\/5\/2015\/10\/a3-300x126.png\" width=\"320\" height=\"133\" border=\"0\" \/><\/a><\/div>\n<div><span lang=\"EN-US\">\u00a0<\/span><\/div>\n<div><span lang=\"EN-US\">If you should have any questions about how high availability can be set up best in your specific scenario, please, do not hesitate to contact your Derdack Consulting and Support team.<\/span><\/div>\n<div><\/div>\n<div><\/div>\n<div class=\"clearfix\"><\/div>","protected":false},"excerpt":{"rendered":"<p>Enterprise Alert is a crucial part of the corporate infrastructure. People rely on critical alerts in order to take according action or in order to prevent disasters. Therefore, it is essential that Enterprise Alert is highly available and thus able to send out alerts even if other systems are not working properly anymore. One customer<\/p>\n<p class=\"cv-read-more-button\"><a class=\"cv-button button is-standard color-accent has-icon icon-after\" href=\"https:\/\/www.derdack.com\/de\/making-enterprise-alert-highly-available\/\">Continue Reading<i class=\"button-icon icon-right-open-big\"><\/i><\/a><\/p>\n","protected":false},"author":11,"featured_media":3650,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[276],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Making Enterprise Alert Highly Available<\/title>\n<meta name=\"description\" content=\"Enterprise Alert is a crucial part of the corporate infrastructure. 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