{"id":6391,"date":"2026-11-01T11:01:12","date_gmt":"2026-11-01T09:01:12","guid":{"rendered":"https:\/\/vtkkperinne.fi\/?page_id=6391"},"modified":"2026-11-01T11:07:08","modified_gmt":"2026-11-01T09:07:08","slug":"storagetek-4400-automated-cartridge-system","status":"publish","type":"page","link":"https:\/\/vtkkperinne.fi\/?page_id=6391","title":{"rendered":"StorageTek 4400 Automated Cartridge System"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">StorageTek 4400 Automated Cartridge System<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Mik\u00e4 ACS 4400 oli?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">StorageTek 4400 Automated Cartridge System oli automatisoitu kasettikirjasto eli k\u00e4yt\u00e4nn\u00f6ss\u00e4 <strong>kasettirobotti<\/strong>, jossa robotiikka haki halutun magneettinauhakasetin varastosta ja toimitti sen nauha-asemalle. StorageTekin alkuper\u00e4isen tuote-esitteen mukaan robotti haki ja toimitti kasetin keskim\u00e4\u00e4rin noin <strong>11 sekunnissa<\/strong>. <\/p>\n\n\n\n<p class=\"wp-block-paragraph\">J\u00e4rjestelm\u00e4 k\u00e4ytti 3480\/3490-tyyppiseen nauhateknologiaan perustuvia kasetteja. NASA:n vuonna 1993 julkaistun tutkimuksen mukaan suurimmassa kokoonpanossa yksi ACS 4400 saattoi sis\u00e4lt\u00e4\u00e4 noin <strong>6 000 kasettia ja 16 nauha-asemaa<\/strong>. 3480-kaseteilla suurimmaksi tallennuskapasiteetiksi ilmoitettiin noin <strong>1,2 teratavua<\/strong> ja kokonais-I\/O-nopeudeksi noin <strong>24 MB\/s<\/strong>. <a href=\"https:\/\/ntrs.nasa.gov\/archive\/nasa\/casi.ntrs.nasa.gov\/19940029305.pdf\">[ntrs.nasa.gov]<\/a>, <a href=\"https:\/\/ntrs.nasa.gov\/citations\/19940029305\">[ntrs.nasa.gov]<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Oleellinen k\u00e4site oli <strong>Nearline<\/strong>. Data ei ollut levyj\u00e4rjestelm\u00e4n tapaan v\u00e4litt\u00f6m\u00e4sti k\u00e4ytett\u00e4viss\u00e4, mutta k\u00e4ytt\u00e4j\u00e4n tai operaattorin ei my\u00f6sk\u00e4\u00e4n tarvinnut k\u00e4yd\u00e4 fyysisesti hakemassa nauhaa. Automaatio haki oikean kasetin nauha-asemalle. StorageTek markkinoi t\u00e4t\u00e4 nimenomaan online- ja offline-tallennuksen v\u00e4liin sijoittuvana ratkaisuna. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Verkkoviitteet<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>1. Paras tekninen\/historiallinen l\u00e4hde<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">NASA Technical Reports Server: Performance measurements and operational characteristics of the Storage Tek ACS 4400 tape library with the Cray Y-MP EL, 1993. Tutkimuksessa testattiin noin <strong>5 200 kasetin ja kahdeksan 3480-nauha-aseman<\/strong> ACS 4400 -j\u00e4rjestelm\u00e4\u00e4. Testeiss\u00e4 ajettiin yli 40 000 nauhaty\u00f6t\u00e4. <a href=\"https:\/\/ntrs.nasa.gov\/archive\/nasa\/casi.ntrs.nasa.gov\/19940029305.pdf\">[ntrs.nasa.gov]<\/a>, <a href=\"https:\/\/ntrs.nasa.gov\/citations\/19940029305\">[ntrs.nasa.gov]<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/ntrs.nasa.gov\/citations\/19940029305\">NASA:n ACS 4400 -tutkimus<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>2. StorageTekin alkuper\u00e4inen tuote-esite<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">StorageTek 4400 Automated Cartridge System \u2013 General Information kuvaa j\u00e4rjestelm\u00e4n rakenteen, robotiikan, Nearline-ajattelun sek\u00e4 4480-nauha-alij\u00e4rjestelm\u00e4n. <a href=\"https:\/\/www.1000bit.it\/ad\/bro\/stotec\/Storagetek4400ACS.pdf\">[1000bit.it]<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.1000bit.it\/ad\/bro\/stotec\/Storagetek4400ACS.pdf\">StorageTek 4400 ACS -tuote-esite PDF<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>3. Oracle\/Sun StorageTek -dokumentaatio<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Sun StorageTek 4400 Automated Cartridge System Product Library Documentation sis\u00e4lt\u00e4\u00e4 ACS 4400\/4410 -j\u00e4rjestelmien alkuper\u00e4isi\u00e4 k\u00e4ytt\u00f6- ja yhteensopivuusoppaita. <a href=\"https:\/\/docs.oracle.com\/cd\/E19177-01\/index.html\">[docs.oracle.com]<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/docs.oracle.com\/cd\/E19177-01\/index.html\">Oracle StorageTek 4400 ACS -dokumentaatio<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>4. Computer History Museum -taustal\u00e4hde<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">STK 4400 ACS (Automated Cartridge System) 1987 k\u00e4sittelee j\u00e4rjestelm\u00e4\u00e4 tallennustekniikan historian n\u00e4k\u00f6kulmasta ja ajoittaa STK 4400 ACS:n vuoteen <strong>1987<\/strong>. <a href=\"http:\/\/s3.computerhistory.org\/groups\/stk-4400-20121031.pdf\">[STK 4400_20121031]<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"http:\/\/s3.computerhistory.org\/groups\/stk-4400-20121031.pdf\">Computer History Museumin STK 4400 -aineisto<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><\/h3>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><strong>StorageTek 4400 ACS -kasettirobotti<\/strong><br>StorageTek 4400 ACS (Automated Cartridge System) oli automatisoitu nauhakasettikirjasto, jossa robotti haki tarvittavan magneettinauhakasetin varastosta ja toimitti sen nauha-asemalle. J\u00e4rjestelm\u00e4 edusti niin sanottua <em>nearline<\/em>-tallennusta: suuret tietom\u00e4\u00e4r\u00e4t voitiin s\u00e4ilytt\u00e4\u00e4 nauhalla kustannustehokkaasti, mutta niiden hakeminen ei en\u00e4\u00e4 edellytt\u00e4nyt kasettien manuaalista k\u00e4sittely\u00e4. StorageTekin mukaan robotti pystyi hakemaan ja toimittamaan kasetin keskim\u00e4\u00e4rin noin 11 sekunnissa. Suurimmillaan ACS 4400 -kirjastossa voitiin k\u00e4ytt\u00e4\u00e4 noin 6 000 kasettia ja 16 nauha-asemaa. <a href=\"https:\/\/www.1000bit.it\/ad\/bro\/stotec\/Storagetek4400ACS.pdf\">[1000bit.it]<\/a>, <a href=\"https:\/\/ntrs.nasa.gov\/citations\/19940029305\">[ntrs.nasa.gov]<\/a><\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\"><strong> ACS 4400 havainnollistaa konkreettisesti siirtym\u00e4\u00e4 operaattorien k\u00e4sin hoitamasta nauha-arkistosta automatisoituun suurten tietom\u00e4\u00e4rien massamuistiin.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>T\u00e4rke\u00e4 rajaus:<\/strong>  l\u00e4hteet todentavat ACS 4400:n ominaisuudet ja historian, mutta eiv\u00e4t viel\u00e4 itsess\u00e4\u00e4n todista <strong>VTKK:n oman ACS 4400 -asennuksen tarkkaa kokoonpanoa vuonna 1991<\/strong>. <\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>StorageTek 4400 Automated Cartridge System Mik\u00e4 ACS 4400 oli? StorageTek 4400 Automated Cartridge System oli automatisoitu kasettikirjasto eli k\u00e4yt\u00e4nn\u00f6ss\u00e4 kasettirobotti, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-6391","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vtkkperinne.fi\/index.php?rest_route=\/wp\/v2\/pages\/6391","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vtkkperinne.fi\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/vtkkperinne.fi\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/vtkkperinne.fi\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vtkkperinne.fi\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=6391"}],"version-history":[{"count":3,"href":"https:\/\/vtkkperinne.fi\/index.php?rest_route=\/wp\/v2\/pages\/6391\/revisions"}],"predecessor-version":[{"id":6400,"href":"https:\/\/vtkkperinne.fi\/index.php?rest_route=\/wp\/v2\/pages\/6391\/revisions\/6400"}],"wp:attachment":[{"href":"https:\/\/vtkkperinne.fi\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=6391"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}