{"id":68305,"date":"2022-10-11T17:20:55","date_gmt":"2022-10-11T17:20:55","guid":{"rendered":"https:\/\/www.techrepublic.com\/?p=4000438"},"modified":"2022-10-11T17:20:55","modified_gmt":"2022-10-11T17:20:55","slug":"9-things-you-shouldnt-virtualize","status":"publish","type":"post","link":"https:\/\/cloudnewshub.com\/?p=68305","title":{"rendered":"9 things you shouldn\u2019t virtualize"},"content":{"rendered":"<div id>\n<p> Virtualization can be a good way to make your servers more efficient. However, it isn\u2019t right for every organization or every use case. <\/p>\n<\/div>\n<div id>\n<figure id=\"attachment_4000443\" aria-describedby=\"caption-attachment-4000443\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"size-article wp-image-4000443\" src=\"http:\/\/cloudnewshub.com\/wp-content\/uploads\/2022\/10\/9-things-you-shouldnt-virtualize.jpg\" alt=\"Servers with green lights in a data center.\" width=\"770\" height=\"433\"><figcaption id=\"caption-attachment-4000443\" class=\"wp-caption-text\">Image: railwayfx\/Adobe Stock<\/figcaption><\/figure>\n<p>Virtualization has changed a lot in the past decade. It goes hand-in-hand with buzzwords like <a href=\"https:\/\/www.techrepublic.com\/article\/top-5-cloud-computing-use-cases\/\">cloud computing<\/a>, but virtualization has been the technology behind shared servers for a long time. Virtualized machines are private \u2014 unlike a public, shared cloud. Today, they are often used for server consolidation or application testing. This allows for <a href=\"https:\/\/www.redhat.com\/en\/topics\/virtualization\/what-is-virtualization\" target=\"_blank\" rel=\"nofollow noopener sponsored noreferrer\">enterprises to both<\/a> continue to use legacy apps across multiple system types and partition their servers.<\/p>\n<p><strong>SEE: <a href=\"https:\/\/www.techrepublic.com\/resource-library\/whitepapers\/hiring-kit-cloud-engineer\/\">Hiring Kit: Cloud Engineer<\/a> (TechRepublic Premium)<\/strong><\/p>\n<p>When should you use virtualization? It has many benefits, including potentially saving space and money on physical hardware and offering better consistency and reliability. Virtualization today is often done using containerization, in which operating system libraries and applications dependencies are packaged in a container which can run on any infrastructure. It\u2019s \u201c<a href=\"https:\/\/www.ibm.com\/cloud\/learn\/containerization\" target=\"_blank\" rel=\"nofollow noopener sponsored noreferrer\">portable<\/a>,\u201d cutting down on the time it takes to create, configure and deploy.<\/p>\n<p>However, there are some things that are better served by a physical environment. Knowing these will help decide how to split your setup between physical and digital realms.<\/p>\n<h2>Top 9 things you shouldn\u2019t virtualize<\/h2>\n<h3>Projects with small IT teams<\/h3>\n<p>Just as it\u2019s possible to have too many cooks in a kitchen, it\u2019s possible to have too many kitchens and too few cooks. Take careful stock of your existing people and resources before making the decision to virtualize.<\/p>\n<p>John Livesay, vice president and chief sales officer of InfraNet Technologies Group, said businesses that have \u201cless IT staff and fewer security concerns\u201d might be better served by a cloud provider than by handling virtualization on their own. Creating a virtual machine won\u2019t iron out struggles the team may already be facing due to stretching too far.<\/p>\n<h3>Highest-performance systems<\/h3>\n<aside class=\"pinbox right\">\n<h3 class=\"heading\">Cloud: Must-read coverage<\/h3>\n<\/aside>\n<p>Although virtualization has kept up to date with the ability to handle streaming and other relatively high-performance processes, some memory-intensive projects aren\u2019t a good fit. Not having enough memory or overcommitting the memory you do have can lead to performance issues. Server virtualization may make it easier for you to save physical space, but it still requires a lot of memory.<\/p>\n<h3>Anything too new to have good redundancy<\/h3>\n<p>When it comes to power sources, it\u2019s best practice to always have a backup. The same is true of virtualizing servers. Don\u2019t go out on a limb with virtualizing something and end up removing the redundancy the original had. Make sure you\u2019ve tested that the virtualized server and its backup work well before you make any changes you can\u2019t reverse.<\/p>\n<h3>Keystones of your physical environment<\/h3>\n<p>What if the VM you\u2019re trying to repair also controls the retinal scanner that is supposed to let you into the building? Now you have a second problem. Software on VMs shouldn\u2019t be the only way to access physical controls, especially if they\u2019re mission critical or could cause problems for the people working on the servers themselves. Also consider whether high performance could cause any physical jittering on older servers.<\/p>\n<h3>High-security information<\/h3>\n<p>A VM is never quite as secure as a physical one. Why? It needs some kind of connectivity to run, and even restricted permissions might enable someone from within the company to open the VM up to a wider pool of people than it was originally intended for.<\/p>\n<p>One possible solution to this is to keep an eye on all security regulations and\/or guidelines and make sure the VM can\u2019t be used to get around them. There isn\u2019t necessarily someone malicious within your organization; loopholes for convenience can arise that can get around permissions as well. A read-only domain controller is also a good idea in cases such as a branch office where something needs to be open to another group of people.<\/p>\n<h3>Anything that could create circular dependency<\/h3>\n<p>VMs need to be carefully looked after in case of circular dependency. You don\u2019t want to find that your VM depends on another virtualized service that may be taken offline unexpectedly and out of your control. Good communication can help with this, but doesn\u2019t account for emergencies. Local log-ons or splitting control between virtual and physical systems can help prevent this. A common theme here is also a general best practice: Try to avoid having a single point of failure.<\/p>\n<h3>Too many applications<\/h3>\n<p><a href=\"https:\/\/learn.microsoft.com\/en-us\/windows-server\/identity\/ad-ds\/get-started\/virtual-dc\/virtualized-domain-controllers-hyper-v\" target=\"_blank\" rel=\"nofollow noopener sponsored noreferrer\">Microsoft<\/a> recommends that, when setting up a Hyper-v server, you avoid adding any other applications. That\u2019s because fewer applications and services running in place means better performance for the main event. It\u2019s also good security practice, falling neatly under the umbrella of reduced attack surface. After all, the fewer applications and services available, the fewer attackers have to take advantage of.<\/p>\n<h3>Hyperthreading<\/h3>\n<p>Particularly in SQL servers, hyperthreading can be a gift and a curse. Looping in virtual cores through hyperthreading can cause performance issues because the threads can compete for space with the SQL server. SQL Server virtualization is resource-intensive already and needs the virtual CPUs it needs, regardless of the presence of hyperthreading.<\/p>\n<h3>Systems at risk of virtual machine sprawl<\/h3>\n<p>Just as with physical systems, it\u2019s important to take inventory of what you actually have already before starting a new project. With different VMs spread out across different software or physical locations, it\u2019s relatively easy to find yourself with VM sprawl, having too many VMs for what you actually need. This can reduce efficiency and cause performance issues if it goes too far.<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Virtualization can be a good way to make your servers more efficient. However, it isn\u2019t right for every organization or every use case. Image: railwayfx\/Adobe Stock Virtualization has changed a lot in the past decade. It goes hand-in-hand with buzzwords like cloud computing, but virtualization has been the technology behind shared servers for a long [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":68306,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[40,783],"tags":[],"class_list":["post-68305","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cloud","category-cloudsync"],"_links":{"self":[{"href":"https:\/\/cloudnewshub.com\/index.php?rest_route=\/wp\/v2\/posts\/68305","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cloudnewshub.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cloudnewshub.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cloudnewshub.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cloudnewshub.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=68305"}],"version-history":[{"count":0,"href":"https:\/\/cloudnewshub.com\/index.php?rest_route=\/wp\/v2\/posts\/68305\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/cloudnewshub.com\/index.php?rest_route=\/wp\/v2\/media\/68306"}],"wp:attachment":[{"href":"https:\/\/cloudnewshub.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=68305"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cloudnewshub.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=68305"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cloudnewshub.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=68305"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}