{"id":433,"date":"2018-08-29T11:21:26","date_gmt":"2018-08-29T08:21:26","guid":{"rendered":"https:\/\/blog.arcak.net\/?p=410"},"modified":"2018-08-31T09:18:22","modified_gmt":"2018-08-31T06:18:22","slug":"vmware-vsan-2","status":"publish","type":"post","link":"https:\/\/blog.arcak.net\/index.php\/2018\/08\/29\/vmware-vsan-2\/","title":{"rendered":"VMware vSAN"},"content":{"rendered":"

VMware vSan<\/strong>\u00a0can be called as a technology that allows locally attached disks that are installed on the server to create a clustered disk space, or as Distributed Object-Based Storage<\/strong>. It reduces complexity eliminating the\u00a0 physical storage layer.<\/p>\n

Since\u00a0vSan<\/strong> is embedded in the hypervisor, what you need to do is only to activate it via\u00a0vSphere<\/strong> and a separate installation is not required.<\/p>\n

It can be taken as vSan ReadyNode<\/strong> from a variety of compatible vendors and make your own installation, <\/strong>Also can be taken\u00a0as ready-to-use solutions like Dell VxRail<\/strong>. You can also check whether your existing hardware is vSan<\/strong> compliant from here<\/strong><\/a>\u00a0 and licensing for version 6.7 here<\/a><\/strong><\/p>\n

\"\"<\/p>\n

<\/p>\n

Technologies such as HA, DRS, vMotion <\/strong>used in VMware<\/strong> vSphere<\/strong> are compatible with vSan<\/strong>.<\/p>\n

A passthrough RAID card is required for vSan<\/strong>, so if you have an unsupported old card, there is still still a chance to install vSan <\/strong>by creating RAID-0 Virtual drives per each disk.\u00a0<\/strong>\u00a0(not recommended except for Test environment<\/strong>.)<\/p>\n

It can work in both hybrid and all-flash structure. For hybrid construction, <\/strong>Min. 1GB\/s network speed and\u00a0 Min. 10gb\/s for all-flash are required.<\/p>\n

Each disk group must consist of\u00a01 cache SSD<\/strong> and\u00a0SSD<\/strong> or magnetic discs<\/strong> between\u00a0 1-7\u00a0 for capacity.\u00a0A total of 5 disk <\/strong>groups are supported.<\/p>\n

When used with All-flash, Nearline Deduplication<\/strong> and Compression<\/strong> are supported.<\/p>\n

Support for cabinet redundancy can be provided with Fault Domain<\/strong>.<\/p>\n

If the network access is not exceeding 5 ms latency, the loss of a location between two does not stop entire system from working with Stretched Cluster<\/strong> feature. The entire infrastructure will continue to operate over the second location. (Witness Node\u00a0 is required<\/strong>)<\/p>\n

Although vSan requires at least 3 <\/strong>node requirements to function, it can\u00a0also work with 1 + 1<\/strong>\u00a0 i.e. 2<\/strong> node using one Witness node.<\/p>\n

\"\"<\/p>\n

Unlike the raid types in traditional storage units, Datastore default and virtual machine-based\u00a0<\/strong>RAID policies are used in vSan<\/strong>.<\/p>\n

Simply RAID1, RAID0, Ra\u0131d5-6 (Erasure Coding) <\/strong>variations of these policies including\u00a0Data locality and<\/strong>\u00a0Stretched Cluster <\/strong>exist in vSan<\/strong>. I’ll not keep it in detail for now, and will elaborate on my next writings<\/strong><\/a>.<\/p>\n

\n","protected":false},"excerpt":{"rendered":"

VMware vSan\u00a0can be called as a technology that allows locally attached disks that are installed on the server to create a clustered disk space, or as Distributed Object-Based Storage. It reduces complexity eliminating the\u00a0 physical storage layer. Since\u00a0vSan is embedded in the hypervisor, what you need to do is only to activate it via\u00a0vSphere and […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[193,165,167],"tags":[],"class_list":["post-433","post","type-post","status-publish","format-standard","hentry","category-hyperconverged-infrastructure","category-virtualization","category-vmware"],"_links":{"self":[{"href":"https:\/\/blog.arcak.net\/index.php\/wp-json\/wp\/v2\/posts\/433"}],"collection":[{"href":"https:\/\/blog.arcak.net\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.arcak.net\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.arcak.net\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.arcak.net\/index.php\/wp-json\/wp\/v2\/comments?post=433"}],"version-history":[{"count":12,"href":"https:\/\/blog.arcak.net\/index.php\/wp-json\/wp\/v2\/posts\/433\/revisions"}],"predecessor-version":[{"id":507,"href":"https:\/\/blog.arcak.net\/index.php\/wp-json\/wp\/v2\/posts\/433\/revisions\/507"}],"wp:attachment":[{"href":"https:\/\/blog.arcak.net\/index.php\/wp-json\/wp\/v2\/media?parent=433"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.arcak.net\/index.php\/wp-json\/wp\/v2\/categories?post=433"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.arcak.net\/index.php\/wp-json\/wp\/v2\/tags?post=433"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}