If you require broader support, especially for older operating systems, VMware is a good choice. If you operate mostly Windows VMs, Hyper-V is a suitable alternative. For example, while VMware can use more logical CPUs and virtual CPUs per host, Hyper-V can accommodate more physical memory per host and VM.
A port group, as the name implies, is a grouping of switch ports. By applying a network policy to a port group, one can enforce security and traffic shaping rules. When you create a network-enabled virtual machine, you are in fact connecting its virtual adapters to one or more port groups.
The vSwitch uses the physical NICs (pNICs) associated with the host server to connect the virtual network to the physical network. In VMware, these pNICs are also called uplink adapters. The vSwitch is responsible for routing network traffic to the VMkernel, the VM network, and the Service Console.
vSphere Standard Switch is used to provide network connectivity for hosts, virtual machines and to handle VMKernel Traffic. Standard switch works with only with one ESXi host. vSphere standard switch bridge traffic internally between virtual machines in VLAN.
Hyper-V can consolidate and run applications onto fewer physical servers. Virtualization enables quick provisioning and deployment, enhances workload balance and enhances resiliency and availability, due to being able to dynamically move virtual machines from one server to another.
Create a virtual switch by using Hyper-V Manager
- Open Hyper-V Manager, select the Hyper-V host computer name.
- Select Action > Virtual Switch Manager.
- Choose the type of virtual switch you want.
- Select Create Virtual Switch.
- Add a name for the virtual switch.
VSphere Standard Switch (vSS) and vSphere Distributed Switch (vDS) provide network connectivity among virtual machines, different networks and workloads. You can use vSS and vDS at the same time, but not on the same networks or port groups. You must also have a vSphere Enterprise Plus license to install vDS.
VMware® VMotionâ„¢ enables the live migration of running virtual machines from one physical server to another with zero downtime, continuous service availability, and complete transaction integrity. VMotion is a key enabling technology for creating the dynamic, automated, and self- optimizing data center.
Fault Tolerance provides a higher level of business continuity than vSphere HA. When a Secondary VM is called upon to replace its Primary VM counterpart, the Secondary VM immediately takes over the Primary VM's role with the entire state of the virtual machine preserved.
Uplink port group: An uplink port group or dvuplink port group is defined during the creation of the distributed switch and can have one or more uplinks. You configure NIC teaming, failover, load balancing, VLAN, security, traffic shaping, and other policies on distributed port groups.
Promiscuous mode is a security policy which can be defined at the virtual switch or portgroup level in vSphere ESX/ESXi. A virtual machine, Service Console or VMkernel network interface in a portgroup which allows use of promiscuous mode can see all network traffic traversing the virtual switch.
VMWare vSAN is a software-defined storage product that is used in collaboration with VMware ESXi hypervisor. A software-defined storage provisions and manages storage based on policies, regardless of the underlying hardware. These policies can be assigned to individual virtual machines effortlessly.
VMware NIC teaming is a way to group several network interface cards (NICs) to behave as one logical NIC. Properly configured NIC teams allow guest virtual machines (VMs) in a VMware ESX environment to failover if one NIC or network switch fails. VMware NIC teaming also helps load balance network traffic.
Typ 2. Ein Hypervisor vom Typ 2, auch als gehosteter Hypervisor bezeichnet, wird auf einem konventionellen Betriebssystem als Softwareschicht oder Anwendung ausgeführt. Dieser abstrahiert die Guest-Betriebssysteme vom Host-Betriebssystem.
An uplink port group has one or more uplinks. By default, there are 4 uplinks created when first create a vDS. Again, changing settings on the uplink port group, those settings are replicated to all the connected hosts.
The VMkernel ports, which are also referred to as “VMkernel networking interfaces†or even “virtual adapters†in various places, are special constructs used by the vSphere host to communicate with the outside world. The goal of a VMkernel port is to provide some sort of Layer 2 or Layer 3 services to the vSphere host.
Port groups allow us to logically carve up our virtual ports that are available on a particular vSwitch. We can apply traffic policy rules at the port group level – security rules and traffic shaping. Port groups are where we can also assign VLANs to our traffic.
You should have at least two uplinks configured for a VDS to allow for redundancy.
A vSphere Distributed Switch, also referred to as a VDS or a distributed switch, is a virtual switch that provides network connectivity to hosts and virtual machines. Distributed port group - Distributed port groups define how connections are made through the VDS to the network.
VMware Platform Services Controller (PSC) is a new service in vSphere 6 that handles the infrastructure security functions such as vCenter Single Sign-On, licensing, certificate management and server reservation.
VMware vSphere® Distributed Resource Schedulerâ„¢ (DRS) is the resource scheduling and load balancing solution for vSphere. DRS works on a cluster of ESXi hosts and provides resource management capabilities like load balancing and virtual machine (VM) placement. In other words, DRS strives to keep your VMs happy1.
ESX hosts are the servers/data storage devices on which the ESX or ESXi hypervisor has been installed. The use of hypervisors such as ESX and ESXi to create VMs (virtualization) is highly efficient, as one host device can support multiple (up to a dozen or more) VMs.
Physical Ethernet adapters serve as bridges between virtual and physical networks. In VMware Infrastructure, they are called uplinks, and the virtual ports connected to them are called uplink ports. A single host may have a maximum of uplinks, which may be on one switch or distributed among a number of switches.
A VLAN (virtual local area network) is a logical group of workstations, servers and network devices that appear to be on the same LAN despite their geographical distribution.
Virtual Switch Types
- External vSwitch. —binds to a physical network adapter and provides the vSwitch access to a physical network.
- Internal vSwitch. —passes traffic between the virtual machines and the Hyper-V host.
- Private vSwitch. —passes traffic between the virtual machines on the Hyper-V host only.
Host-only networking provides a network connection between the virtual machine and the host computer, using a virtual Ethernet adapter that is visible to the host operating system. This approach can be useful if you need to set up an isolated virtual network.
