Comparing Virtual Network Adapter Types

vlance Emulated version of the AMD 79C970 PCnet32. Older 10 Mbps NIC with drivers available in most 32-bit guest OSes except Windows Vista and newer. VMXNET Paravirtualized adapter, optimized for performance in virtual machines. VMware Tools is required for VMXNET driver. e1000 Emulated version of the Intel 82545EM 1Gbps NIC. Available in Linux versions 2.4.19 … Continue reading Comparing Virtual Network Adapter Types

Virtual Machine Files

vSphere administrators should know the components of virtual machines. There are multiple VMware file types that are associated with and make up a virtual machine. These files are located in the VM’s directory on a datastore. The following table will provide a quick reference and short description of a virtual machine’s files.

Configure vCenter Server storage filters

vCenter Server provides storage filters in its advanced settings to help you avoid storage device corruption or performance degradation that can be caused by an unsupported use of LUNs. These filters are available by default. We have a few different ones to choose from: VMFS filter, RDM filter, Same Host and Transports filter, and Host … Continue reading Configure vCenter Server storage filters

Understand and apply VMFS resignaturing

Each VMFS 5 datastore contains a Universally Unique Identifier (UUID). The UUID is stored in the metadata of your file system called a superblock and is a unique hexadecimal number generated by VMware. When a duplicated (byte-for-byte) copy of a datastore or underlying LUN is executed, the resultant copy will contain the same UUID. As … Continue reading Understand and apply VMFS resignaturing