{"id":258,"date":"2015-09-19T22:34:36","date_gmt":"2015-09-19T22:34:36","guid":{"rendered":"http:\/\/wiki.thomasandsofia.com\/?p=258"},"modified":"2015-11-23T19:00:53","modified_gmt":"2015-11-23T19:00:53","slug":"virtualization-concepts","status":"publish","type":"post","link":"https:\/\/wiki.thomasandsofia.com\/?p=258","title":{"rendered":"Components of VMware vSphere (Module 2 Pt.1 Virtualization Concepts)"},"content":{"rendered":"<p>Objectives<\/p>\n<ul>\n<li>Discuss features of VMware vSphere<\/li>\n<li>Provide overview of challenges vSphere is intended to resolve<\/li>\n<\/ul>\n<h4>What is a Virtual Machine<\/h4>\n<p>Virtual machines look and feel like dedicated servers<\/p>\n<p>Hardware is just software:<\/p>\n<ul>\n<ul>\n<li>Allows you to replace and upgrade hardware on the fly<\/li>\n<li>Add new hardware devices without reboots<\/li>\n<\/ul>\n<\/ul>\n<h4>What can a VM do?<\/h4>\n<p>Host any application<\/p>\n<ul>\n<li>File Servers<\/li>\n<li>Database Servers<\/li>\n<li>Email Servers<\/li>\n<li>Any High-Performance Applications Servers<\/li>\n<li>Multiple VMs can be installed on a single physical host<\/li>\n<li>Virtual Machines are easy to move, copy and restore for disaster recovery.<\/li>\n<li>Means to provision new servers quickly &#8211; possible to create new machines in minutes.<\/li>\n<li>Doesn&#8217;t hamper performance, it enhances capibilities<\/li>\n<\/ul>\n<p>Create Snapshots<\/p>\n<ul>\n<li>Provides a &#8220;point-in-time&#8221; rollback<\/li>\n<li>Complete restoration in case of dataloss or upgrade error, etc.<\/li>\n<li>Includes contents of its hard disk to the states of cpu and memory.<\/li>\n<li>Not designed to be used for backups.<\/li>\n<\/ul>\n<p>Backups<\/p>\n<ul>\n<li>Take &#8220;Image Based&#8221; backup while running.<\/li>\n<li>aka: Bare Metal Backup.\u00a0 Restores entire server without need for recovery operating system or file-by-file restore.<\/li>\n<li>Includes ability to perform file by file restore when required.<\/li>\n<li>Hardware independent restore, so not limited by hardware matching.<\/li>\n<\/ul>\n<p>Hot Add of Hardware<\/p>\n<ul>\n<li>Non-disruptive hardware upgrades without requiring restart (if VM&#8217;s OS supports it!)<\/li>\n<li>CPUs<\/li>\n<li>Disk Drives<\/li>\n<li>RAM<\/li>\n<\/ul>\n<p>Disaster Recovery &amp; Consolidation<\/p>\n<ul>\n<li>Can prove DR plan works without affecting production.<\/li>\n<li>* Low &#8220;consolidation&#8221; DC for performance<\/li>\n<li>* Secondary DC with high consolidation, lower performance, but keeps everything running<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Objectives Discuss features of VMware vSphere Provide overview of challenges vSphere is intended to resolve What is a Virtual Machine Virtual machines look and feel like dedicated servers Hardware is just software: Allows you to replace and upgrade hardware on the fly Add new hardware devices without reboots What can a VM do? Host any ..<\/p>\n<div class=\"clear-fix\"><\/div>\n<p><a href=\"https:\/\/wiki.thomasandsofia.com\/?p=258\" title=\"read more...\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[14,13],"tags":[],"class_list":["post-258","post","type-post","status-publish","format-standard","hentry","category-data-center-virtualization","category-vmware"],"_links":{"self":[{"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=\/wp\/v2\/posts\/258","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=258"}],"version-history":[{"count":5,"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=\/wp\/v2\/posts\/258\/revisions"}],"predecessor-version":[{"id":301,"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=\/wp\/v2\/posts\/258\/revisions\/301"}],"wp:attachment":[{"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=258"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=258"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wiki.thomasandsofia.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=258"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}