By Ron Oglesby, Scott Herold, Brian Madden, Mitch Northcutt
Read Online or Download VMware ESX Server: Advanced Technical Design Guide (Advanced Technical Design Guide series) PDF
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Using this adapter minimizes the amount of virtualization overhead and increases the network performance for a guest OS. It’s important to note that not all operating systems will have the capability to use this device. Use of this device is based strictly on the availability of a VMware Tools installation package and vmxnet driver for the target guest. 37 38 VMware ESX Server SCSI Like the virtual network adapter, VMware provides two different SCSI adapters that may be presented to a guest operating system.
Depending on the size of your environment and the type of data you’ll be connecting to, you may or may not have a need for fiber HBAs or additional SCSI adapters. Console While “virtual” devices are only be seen by your virtual guests, “console” devices, as you may have guessed, are only seen by the COS. Every ESX host has at least one network adapter that is used by the service console. ) When you communicate to the host with the MUI or connect via ssh, you’re interacting with this network interface.
Each time a virtual machine references a virtual switch in its configuration it utilizes one port. Virtual switches also load-balance virtual machines across all physical NICs used to create the switch. If one network switch port or VMNIC were to fail, the remaining VMNICs in the bond that makes up the virtual switch would pick up the workload. Another feature of the virtual switch is that any traffic between VMs on the same virtual switch is typically transferred locally across the system bus as opposed to the across network infrastructure.