{"id":942,"date":"2009-05-06T14:34:23","date_gmt":"2009-05-06T14:34:23","guid":{"rendered":"https:\/\/www.galsys.co.uk\/news\/?p=942"},"modified":"2018-05-09T10:10:13","modified_gmt":"2018-05-09T10:10:13","slug":"increased-accuracy-of-dual-ntp-server-systems","status":"publish","type":"post","link":"https:\/\/www.galsys.co.uk\/news\/increased-accuracy-of-dual-ntp-server-systems\/","title":{"rendered":"Increased Accuracy of Dual NTP Server Systems"},"content":{"rendered":"<p>The <a href=\"https:\/\/www.ntp-time-server.com\">NTP time server<\/a> has revolutionised the synchronisation of computer networks over the last twenty years. <a href=\"https:\/\/www.ntp.org\">NTP<\/a> (Network Time Protocol) is the software\u00a0 that\u00a0 is responsible for distributing time from the time server to the entire network, adjusting machines for drift and assuring accuracy.<\/p>\n<p>NTP can reliable maintain system clocks to within a few millimetres of <a href=\"https:\/\/en.wikipedia.org\/wiki\/Coordinated_Universal_Time\">UTC<\/a> (Coordinated Universal Time) or whatever timescale it is fed with.<\/p>\n<p>However NTP can only be as reliable as the time source that it receives and as UTC\u00a0 is the global civil timescale it depends on where the UTC source comes from.<\/p>\n<p>National time and frequency transmissions from physics labs like <a href=\"https:\/\/www.nist.gov\">NIST<\/a> in the USA or <a href=\"https:\/\/www.npl.co.uk\">NPL<\/a> in the UK are extremely reliable sources of UTC and <a href=\"https:\/\/www.galsys.co.uk\/time-server\/ntp-time-server.html\">NTP time servers<\/a> are designed specifically for them. However, the time signals are not guaranteed, they can drop off throughout the day and are susceptible to interference; they are also regularly turned of for maintenance.<\/p>\n<p>For most applications a few hours of your network relying on crystal oscillators will probably not cause too much problems in synchronisation. However, <a href=\"https:\/\/en.wikipedia.org\/wiki\/Global_Positioning_System\">GPS<\/a> (Global Positioning System) is far more reliable source for UTC time in that a GPS satellite is always overhead. They do require a line-of-sight reception which means an antenna has to go on the roof or outside an open window.<\/p>\n<p>For applications where accuracy and reliability are essential the safest solution is to invest in a dual system <a href=\"https:\/\/www.atomic-clock.galleon.eu.com\/\">NTP time server<\/a>, these device can receive both the radio transmissions such\u00a0 as MSF, DCF-77 or WWVB and the GPS signal.<\/p>\n<p>On a dual system <a href=\"https:\/\/www.galsys.co.uk\/categories\/ntp-server.html\">NTP server<\/a>, NTP will take both time sources and to synchronise a network to ensuring increased accuracy and reliability.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The NTP time server has revolutionised the synchronisation of computer networks over the last twenty years. NTP (Network Time Protocol) is the software\u00a0 that\u00a0 is responsible for distributing time from the time server to the entire network, adjusting machines for drift and assuring accuracy. NTP can reliable maintain system clocks to within a few millimetres&hellip;<\/p>\n<p><a class=\"btn btn-primary\" href=\"https:\/\/www.galsys.co.uk\/news\/increased-accuracy-of-dual-ntp-server-systems\/\">Continue reading <i class=\"fas fa-arrow-right\"><\/i><\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,4,5,8,9],"tags":[126,25,28,29,30,205],"class_list":["post-942","post","type-post","status-publish","format-standard","hentry","category-advanced-ntp","category-atomic-clocks","category-chronology","category-ntp-configuration","category-ntp-server-2","tag-linu","tag-network-time-server","tag-ntp-gps-time-server","tag-ntp-servers","tag-ntp-time-server","tag-time-server"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Increased Accuracy of Dual NTP Server Systems - Galleon Systems<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.galsys.co.uk\/news\/increased-accuracy-of-dual-ntp-server-systems\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Increased Accuracy of Dual NTP Server Systems - Galleon Systems\" \/>\n<meta property=\"og:description\" content=\"The NTP time server has revolutionised the synchronisation of computer networks over the last twenty years. NTP (Network Time Protocol) is the software\u00a0 that\u00a0 is responsible for distributing time from the time server to the entire network, adjusting machines for drift and assuring accuracy. 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NTP can reliable maintain system clocks to within a few millimetres&hellip;Continue reading","og_url":"https:\/\/www.galsys.co.uk\/news\/increased-accuracy-of-dual-ntp-server-systems\/","og_site_name":"Galleon Systems","article_published_time":"2009-05-06T14:34:23+00:00","article_modified_time":"2018-05-09T10:10:13+00:00","author":"Stuart","twitter_card":"summary_large_image","twitter_creator":"@GalleonSystems","twitter_site":"@GalleonSystems","twitter_misc":{"Written by":"Stuart","Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.galsys.co.uk\/news\/increased-accuracy-of-dual-ntp-server-systems\/#article","isPartOf":{"@id":"https:\/\/www.galsys.co.uk\/news\/increased-accuracy-of-dual-ntp-server-systems\/"},"author":{"name":"Stuart","@id":"https:\/\/www.galsys.co.uk\/news\/#\/schema\/person\/d0bc412239981453c0bcd039a511f32a"},"headline":"Increased Accuracy of Dual NTP Server Systems","datePublished":"2009-05-06T14:34:23+00:00","dateModified":"2018-05-09T10:10:13+00:00","mainEntityOfPage":{"@id":"https:\/\/www.galsys.co.uk\/news\/increased-accuracy-of-dual-ntp-server-systems\/"},"wordCount":291,"keywords":["linu","network time server","ntp gps time server","ntp servers","ntp time server","time server"],"articleSection":["advanced NTP","atomic clocks","chronology","NTP configuration","ntp server"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/www.galsys.co.uk\/news\/increased-accuracy-of-dual-ntp-server-systems\/","url":"https:\/\/www.galsys.co.uk\/news\/increased-accuracy-of-dual-ntp-server-systems\/","name":"Increased Accuracy of Dual NTP Server Systems - Galleon Systems","isPartOf":{"@id":"https:\/\/www.galsys.co.uk\/news\/#website"},"datePublished":"2009-05-06T14:34:23+00:00","dateModified":"2018-05-09T10:10:13+00:00","author":{"@id":"https:\/\/www.galsys.co.uk\/news\/#\/schema\/person\/d0bc412239981453c0bcd039a511f32a"},"breadcrumb":{"@id":"https:\/\/www.galsys.co.uk\/news\/increased-accuracy-of-dual-ntp-server-systems\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.galsys.co.uk\/news\/increased-accuracy-of-dual-ntp-server-systems\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.galsys.co.uk\/news\/increased-accuracy-of-dual-ntp-server-systems\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.galsys.co.uk\/news\/"},{"@type":"ListItem","position":2,"name":"Increased Accuracy of Dual NTP Server Systems"}]},{"@type":"WebSite","@id":"https:\/\/www.galsys.co.uk\/news\/#website","url":"https:\/\/www.galsys.co.uk\/news\/","name":"Galleon Systems","description":"Sales: 0121 608 7230","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.galsys.co.uk\/news\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Person","@id":"https:\/\/www.galsys.co.uk\/news\/#\/schema\/person\/d0bc412239981453c0bcd039a511f32a","name":"Stuart","image":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/secure.gravatar.com\/avatar\/fe4598bc8745112a8106520efd95cbf602b09ebe2ae1081d18f9c529f4707d72?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/fe4598bc8745112a8106520efd95cbf602b09ebe2ae1081d18f9c529f4707d72?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/fe4598bc8745112a8106520efd95cbf602b09ebe2ae1081d18f9c529f4707d72?s=96&d=mm&r=g","caption":"Stuart"},"sameAs":["https:\/\/www.galsys.co.uk"],"url":"https:\/\/www.galsys.co.uk\/news\/author\/stuart\/"}]}},"_links":{"self":[{"href":"https:\/\/www.galsys.co.uk\/news\/wp-json\/wp\/v2\/posts\/942","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.galsys.co.uk\/news\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.galsys.co.uk\/news\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.galsys.co.uk\/news\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.galsys.co.uk\/news\/wp-json\/wp\/v2\/comments?post=942"}],"version-history":[{"count":3,"href":"https:\/\/www.galsys.co.uk\/news\/wp-json\/wp\/v2\/posts\/942\/revisions"}],"predecessor-version":[{"id":2007,"href":"https:\/\/www.galsys.co.uk\/news\/wp-json\/wp\/v2\/posts\/942\/revisions\/2007"}],"wp:attachment":[{"href":"https:\/\/www.galsys.co.uk\/news\/wp-json\/wp\/v2\/media?parent=942"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.galsys.co.uk\/news\/wp-json\/wp\/v2\/categories?post=942"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.galsys.co.uk\/news\/wp-json\/wp\/v2\/tags?post=942"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}