{"id":361,"date":"2020-07-30T16:06:10","date_gmt":"2020-07-30T15:06:10","guid":{"rendered":"http:\/\/thomas-kopton.de\/vblog\/?p=361"},"modified":"2020-07-30T16:06:10","modified_gmt":"2020-07-30T15:06:10","slug":"esxi-cluster-non-hci-rightsizing-using-vrealize-operations","status":"publish","type":"post","link":"https:\/\/thomas-kopton.de\/vblog\/?p=361","title":{"rendered":"ESXi Cluster (non-HCI) Rightsizing using vRealize Operations"},"content":{"rendered":"\n<p><strong>vRealize Operations<\/strong> with its four main pillars:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Optimize Performance<\/li><li>Optimize Capacity<\/li><li>Troubleshoot<\/li><li>Manage Configuration<\/li><\/ul>\n\n\n\n<p>provides a perfect solution to manage complex SDDC environments.<\/p>\n\n\n\n<p>The <strong>\u201cOptimize Performance\u201d<\/strong> part of vRealize Operations provides a wide range of features like <strong>workload optimization<\/strong> to ensure consistent performance in your datacenters or <strong>VM rightsizing<\/strong> to reduce bottlenecks and ensure best possible performance of your workloads.<\/p>\n\n\n\n<p>The vROps capability to identify <strong>over- and undersized VMs<\/strong> and conduct the required operations to adjust the configuration of VMs is one of the well-known features, accessible directly form the UI.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized is-style-default\"><a href=\"https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-01.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-01-1024x531.png\" alt=\"\" class=\"wp-image-365\" width=\"768\" height=\"398\" srcset=\"https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-01-1024x531.png 1024w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-01-300x156.png 300w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-01-768x398.png 768w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-01-1536x797.png 1536w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-01-2048x1063.png 2048w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><figcaption>Figure 1: VM Rightsizing<\/figcaption><\/figure>\n\n\n\n<p>But what if you would like to <strong>rightsize your ESXi Clusters<\/strong>? What information and features is vRealize Operations providing in this area?<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">What-If Analysis for Clusters<\/h2>\n\n\n\n<p>The <strong>What-If Analysis<\/strong> feature in the \u201cOptimize Capacity\u201d area is a quick and simple way to check the impact additional workloads or removing of workloads will have in the capacity of an ESXi traditional or HCI cluster.<\/p>\n\n\n\n<p>You can also run <strong>infrastructure centric scenarios<\/strong>, like removing or adding hosts from\/to clusters.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized is-style-default\"><a href=\"https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-02.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-02-1024x487.png\" alt=\"\" class=\"wp-image-367\" width=\"768\" height=\"365\" srcset=\"https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-02-1024x487.png 1024w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-02-300x143.png 300w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-02-768x365.png 768w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-02-1536x730.png 1536w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-02-2048x973.png 2048w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><figcaption>Figure 2: What-If Scenarios<\/figcaption><\/figure>\n\n\n\n<p>These are all great features supporting proper capacity and performance management.<\/p>\n\n\n\n<p>But how can you determine if your clusters are configured correctly from the available capacity point of view? What if you have a significant number of clusters? You probably do not want to run the scenarios for every and each cluster over and over again to get updated information.<\/p>\n\n\n\n<p>vRealize Operations is providing all needed information to have a quick and up-to-date insight into your environment allowing you take all necessary actions to adjust the sizing of your ESXi clusters and optimize your SDDC.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Recommended CPU, Memory and Disk Space Metrics<\/h2>\n\n\n\n<p>vRealize Operations is constantly calculating <strong>recommended values<\/strong> for CPU, Memory and Disk Space based on the configured capacity models, <strong>Demand<\/strong> and <strong>Allocation<\/strong> if activated. The recommended capacity calculation takes into account vROps <strong>Buffers<\/strong>, allocation ratios and <strong>Admission Control<\/strong> settings giving you a fairly reliable indication on how to size your clusters.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized is-style-default\"><a href=\"https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-03.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-03-1024x482.png\" alt=\"\" class=\"wp-image-366\" width=\"768\" height=\"362\" srcset=\"https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-03-1024x482.png 1024w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-03-300x141.png 300w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-03-768x361.png 768w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-03-1536x723.png 1536w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-03-2048x964.png 2048w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><figcaption>Figure 3: Recommended Size Metrics<\/figcaption><\/figure>\n\n\n\n<p>These metrics can be used to calculate the actual number of ESXi host which could be safely removed from the cluster or how many hosts need to be added to cope with the projected demand.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Cluster Rightsizing Dashboard<\/h2>\n\n\n\n<p>The <strong>Dashboard<\/strong> and all required components can be downloaded from <strong>VMware Code<\/strong> page:<\/p>\n\n\n\n<p><a href=\"https:\/\/code.vmware.com\/samples?id=7407#\">https:\/\/code.vmware.com\/samples?id=7407#<\/a><\/p>\n\n\n\n<p>My simple dashboard will give you detailed insights into the utilization and capacity of your clusters.<\/p>\n\n\n\n<p>It will also provide recommendations regarding the optimal size of the cluster, which will help improve the efficiency of your environment.<\/p>\n\n\n\n<p class=\"has-text-color has-vivid-red-color\">This first version of the dashboard is limited to traditional clusters (non-HCI like vSAN clusters).<\/p>\n\n\n\n<p class=\"has-text-color has-vivid-red-color\">Even if it shows all clusters (a filter will be added in the next version), please do not shrink vSAN clusters using information provided by this dashboard.<\/p>\n\n\n\n<p>Only CPU and Memory Demand metrics are processed to conduct the rightsizing.<\/p>\n\n\n\n<p class=\"has-text-color has-luminous-vivid-orange-color\">Before removing ESXi host from a cluster I highly recommend putting them into <strong>maintenance<\/strong> <strong>mode<\/strong> for some period of time and assess performance of the workloads. Additional What-If analysis based on the numbers provided by the dashboard helps get confidence in uncertain situations.<\/p>\n\n\n\n<p>In addition to the metrics provided out-of-the-box we need few <strong>Super Metrics<\/strong> to calculate the actual number of hosts to add\/remove. It is important to note that the calculation is working properly for <strong>uniform clusters<\/strong>. That means same sizing of ESXi host within a cluster, same CPU speed and number of cores, same memory configuration.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized is-style-default\"><a href=\"https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-04.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-04-1024x148.png\" alt=\"\" class=\"wp-image-371\" width=\"768\" height=\"111\" srcset=\"https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-04-1024x148.png 1024w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-04-300x43.png 300w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-04-768x111.png 768w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-04-1536x222.png 1536w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-04-2048x296.png 2048w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><figcaption>Figure 4: Super Metrics<\/figcaption><\/figure>\n\n\n\n<p>The list view used in the dashboard displays all clusters in the selected vSphere Datacenter.<\/p>\n\n\n\n<p>In the last column you will see the number of ESXi host you either should add to the cluster to ensure sufficient capacity or you could potentially remove from the cluster.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized is-style-default\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-05-1024x494.png\" alt=\"\" class=\"wp-image-373\" width=\"776\" height=\"375\" srcset=\"https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-05-1024x494.png 1024w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-05-300x145.png 300w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-05-768x370.png 768w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-05-1536x741.png 1536w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-05-2048x988.png 2048w\" sizes=\"auto, (max-width: 776px) 100vw, 776px\" \/><figcaption>Figure 5: Simple Cluster-Rightsizing Dashboard<\/figcaption><\/figure>\n\n\n\n<p>Before you start removing hosts from clusters, you can also run a What-If scenario to check the remaining capacity and the capacity projection.<\/p>\n\n\n\n<p>In my example the dashboard is indicating that I could remove one host from the <em>wdcc02<\/em> cluster.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized is-style-default\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-06-1024x925.png\" alt=\"\" class=\"wp-image-374\" width=\"512\" height=\"463\" srcset=\"https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-06-1024x925.png 1024w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-06-300x271.png 300w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-06-768x694.png 768w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-06-1536x1387.png 1536w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-06.png 1880w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><figcaption>Figure 6: What-If scenario settings<\/figcaption><\/figure>\n\n\n\n<p>If we run the scenario, we see that from the demand perspective the cluster is still providing sufficient capacity to run the current workloads.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized is-style-default\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-07-1024x566.png\" alt=\"\" class=\"wp-image-375\" width=\"768\" height=\"425\" srcset=\"https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-07-1024x566.png 1024w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-07-300x166.png 300w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-07-768x425.png 768w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-07-1536x849.png 1536w, https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-07-2048x1132.png 2048w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><figcaption>Figure 7: Scenario results<\/figcaption><\/figure>\n\n\n\n<p class=\"has-text-color has-vivid-cyan-blue-color\"><strong>Happy rightsizing and stay safe.<\/strong><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>Thomas &#8211; <a href=\"https:\/\/twitter.com\/ThomasKopton\">https:\/\/twitter.com\/ThomasKopton<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>vRealize Operations with its four main pillars: Optimize Performance Optimize Capacity Troubleshoot Manage Configuration provides a perfect solution to manage complex SDDC environments. The \u201cOptimize Performance\u201d part of vRealize Operations provides a wide range of features like workload optimization to ensure consistent performance in your datacenters or VM rightsizing to reduce bottlenecks and ensure best &#8230;<\/p>\n","protected":false},"author":1,"featured_media":373,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13,34,2],"tags":[17,3],"class_list":["post-361","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dashboard","category-vrealize-operations","category-vrops","tag-dashboard","tag-vrops"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>ESXi Cluster (non-HCI) Rightsizing using vRealize Operations - TOMsOps<\/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:\/\/thomas-kopton.de\/vblog\/?p=361\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"ESXi Cluster (non-HCI) Rightsizing using vRealize Operations - TOMsOps\" \/>\n<meta property=\"og:description\" content=\"vRealize Operations with its four main pillars: Optimize Performance Optimize Capacity Troubleshoot Manage Configuration provides a perfect solution to manage complex SDDC environments. The \u201cOptimize Performance\u201d part of vRealize Operations provides a wide range of features like workload optimization to ensure consistent performance in your datacenters or VM rightsizing to reduce bottlenecks and ensure best ...\" \/>\n<meta property=\"og:url\" content=\"https:\/\/thomas-kopton.de\/vblog\/?p=361\" \/>\n<meta property=\"og:site_name\" content=\"TOMsOps\" \/>\n<meta property=\"article:published_time\" content=\"2020-07-30T15:06:10+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-05.png\" \/>\n\t<meta property=\"og:image:width\" content=\"4188\" \/>\n\t<meta property=\"og:image:height\" content=\"2020\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Thomas Kopton\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Thomas Kopton\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/thomas-kopton.de\/vblog\/?p=361#article\",\"isPartOf\":{\"@id\":\"https:\/\/thomas-kopton.de\/vblog\/?p=361\"},\"author\":{\"name\":\"Thomas Kopton\",\"@id\":\"https:\/\/thomas-kopton.de\/vblog\/#\/schema\/person\/892d6b96c66b1dd4b75c6e32fdbfea82\"},\"headline\":\"ESXi Cluster (non-HCI) Rightsizing using vRealize Operations\",\"datePublished\":\"2020-07-30T15:06:10+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/thomas-kopton.de\/vblog\/?p=361\"},\"wordCount\":721,\"commentCount\":1,\"image\":{\"@id\":\"https:\/\/thomas-kopton.de\/vblog\/?p=361#primaryimage\"},\"thumbnailUrl\":\"https:\/\/thomas-kopton.de\/vblog\/wp-content\/uploads\/2020\/07\/cluster-rsizing-figure-05.png\",\"keywords\":[\"Dashboard\",\"vROps\"],\"articleSection\":[\"Dashboard\",\"vRealize Operations\",\"vROps\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/thomas-kopton.de\/vblog\/?p=361#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/thomas-kopton.de\/vblog\/?p=361\",\"url\":\"https:\/\/thomas-kopton.de\/vblog\/?p=361\",\"name\":\"ESXi Cluster (non-HCI) Rightsizing using vRealize Operations - 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