Understanding VMware VSAN Read & Write Caching

Introduction As we know, VMware vSAN is an software defined storage platform which is fully integrated with vSphere. vSAN creates an object based distributed storage solution by aggregating locally attached storage on the host part of  vSAN Cluster. VMware vSAN SPBM ( Storage Policy Based Management) framework delivers...
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Understanding Adaptive Resync in VMware vSAN 6.7

Introduction to Adaptive Resync Consistent Performance delivery along with data resiliency are two key tenet for an enterprise storage solution. If case of host / disk failure few of the components of the Virtual Machine might get non-complaint because of the the missing data. To make the impacted...
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VMware vSAN Capacity Management and Utilization Deep-dive

Introduction VMware is putting lot of efforts to make tracking of vSAN Capacity utilization simpler. VMware vSAN provides few of the dashboard within vCenter to track capacity utilization, free space remaining, deduplication can compression efficiency and many more. In the latest release, there are more then 200 alarms...
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VMware vSAN Stretched Cluster Deep Dive

Introduction to VMware vSAN Stretched Cluster VMware vSAN Stretched Cluster was introduced back in vSAN 6.1 specific configuration for the environments where disaster / downtime is a primary requirement. Stretched Cluster deployment will be having 2 Active / Active Data Site connected with the well-connected network with a...
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VMware vSAN performance Service: What is it?

Introduction to vSAN Performance Service VMware introduced vSAN performance service back in vSAN 6.2 which vSAN administrators can leverage to monitor the performance of an vSAN environment. vSAN performance service collects and analyzes performance statistics and displays the data in a graphical format. You might ask, why VMware...
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VMware vSAN Witness Appliance Requirements

Introduction to vSAN Witness Appliance As SDDC (Software Defined Datacenter) offerings from VMware are continuing to mature with Virtual SAN 6.1, VMware announced two new great features i.e vSAN Stretched Cluster and 2 – Node vSAN Cluster. In a stretched or 2-node cluster, to maintain the quorum, a...
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Configuring VMware vSAN 2 – Node Cluster

Introduction to 2-Node vSAN Cluster The vSAN 2 Node configuration initially introduced in vSAN 6.1. Prior to 2-node vSAN, three-node clusters was the minimum supported configuration for vSAN enabled environments. VMware vSAN 2 Node Clusters are supported on both Hybrid configurations and All-Flash configurations. A 2-node cluster is very useful in...
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Understanding Degraded Device Handling in VMware VSAN

Degraded Device Handling in VMware VSAN As the name suggest Degraded Device Handling (DDH) or Dying Disk Handling is an unhealthy drive detection method  help VMware VSAN customers to avoid cluster performance degradation due to an unhealthy drive. There can be a situation where the drive part of VSAN is...
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Updating VMware Virtual SAN HCL database offline

VMware offers certified compatibility guides which list System, I/O, Storage/SAN and Backup compatibility with VMware Infrastructure and previous versions of VMware ESX Server. VSAN Health Check leverage VMware Compatibility Guide database for various health checks stored on vCenter Server in place of VMware website. VMware ships a copy...
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VMware VSAN Network Design consideration

VMware Virtual SAN is a distributed shared storage solution that enables the rapid provisioning of storage within VMware vCenter. As Virtual SAN is a distributed shared storage, it is very much dependent on correctly configured network for Virtual Machines I/O and for communication between Virtual SAN Cluster nodes. ...
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