Tag: VCAP5-DCA

VMware vSphere Performance – Part One: Optimizing ESXi Host Memory

January 16, 2015

Once you have have assessed the hardware requirements for ESXi host systems (requires a minimum of 2GB to install) to ensure sufficient memory resources are provided to satisfy the demand of the virtual machines, system overhead and the level of failure protection required, we shall look at various options for optimising ESXi host system memory. … More VMware vSphere Performance – Part One: Optimizing ESXi Host Memory

VMware vSphere Storage Concepts – Part Three: vCenter Server Storage Filters

January 10, 2015

In an environment managed by a vCenter Server System four storage filters are provided by vSphere that determine the affect the action of the vCenter Server when scanning storage. These filters by default prevent all storage that is currently in use being found which I think we can agree is a good practice by default. However, … More VMware vSphere Storage Concepts – Part Three: vCenter Server Storage Filters

VMware vSphere Storage Concepts – Part Two: Raw Device Mapping, N-Port ID Virtualization and VMware Direct Path I/O

January 10, 2015

We have previously discussed the concept for the most common approach VMFS, now we will consider Raw Device Mapping (RDM), N-Port ID Virtualization (NPIV) and VMware Direct Path I/O concepts. Raw Device Mapping  This option for virtual machine hard disks allows for guest to directly utilise the provisioned LUN on the storage array. This may … More VMware vSphere Storage Concepts – Part Two: Raw Device Mapping, N-Port ID Virtualization and VMware Direct Path I/O

VMware vSphere Storage Concepts – Part One: Virtual Disk Format Types

January 10, 2015

When provisioning virtual machine hard disks on VMFS datastores we have the following disk formats to select from: Lazy-zeroed Thick Eager-zeroed Thick Thin Now which format should we decide to use and what are the differences we require to understand? Lazy-zeroed Thick On creation of the virtual machine hard disk the blocks and pointers are allocated … More VMware vSphere Storage Concepts – Part One: Virtual Disk Format Types

Creating a virtual standard switch (vSS) using the esxcli namespace

November 18, 2014

In order to create a virtual standard switch (vSS) we can use the vSphere Web Client or alternatively we can use the esxcli namespace to achieve this. In this example I will create a single vSS by connecting to the console session of an ESXi host with the following requirements: Create a vSS named vSwitch1 … More Creating a virtual standard switch (vSS) using the esxcli namespace