ICM8 vSphere and Virtualization overview Flashcards
Software designed to allocate physical resources to applications
Operating System
Software that rund on an operating system, consuming physical resources
Application
Specialized operating system designed to run VMs
Hypervisor
Specialized application that abstracts hardware resources into software
Virtual machine
The operating system that runs in a VM
Guest
Physical computer that provides resources to the ESXi hypervisor
Host
Server virtualization product of VMware that combines the ESXi hypervisor and the vCenter Server management platform
vSphere
Storage location for virtual machine files
Datastore
Mode in which we place ESXi hosts and datastores prior to performing any maintenance operations
Maintenance mode
Group of ESXi hosts whose resources are shared by VMs
cluster
Feature that supports the migration of powered on VMs from host to host without service interuptions
vSphere vMotion
Cluster feature that uses vSphere vMotion to place VMs on hosts and enusre that each VM receives the resources that it needs
vSphere DRS
Cluster feature that protects against host hardware failures by restarting VMs on hosts that are running normally
vSphere HA
a bundle of drivers. Using these drivers the guest OS can interact efficiently with the VM
VMware Tools
Benefits of a VM
Easy to move or copy
Independent of physical hardware, VMs are encapsulated into files
Isolated from other VMs on the same hardware
Insulated from physical hardware changes
Two core administrative components for running virtual machines
ESXI
vCenter
virtualization that allows companies to create multiple operating systems that run on a single physical server
Server virtualization
virtualization that is a complete reproduction of a physical network
network virtualization
Virtualizaiton that creates a software-based representation of network storage devices
Storage virtualization
Term when all infrastructure in a datacenter is virtualized
SDDC Software-defined data center
Layers of SDDC
Service managment and automation
Cloud management
Virtual infrastructure
Physical layer
And security
What SDDC layer will you find VMware Aria Operations and vRealize Log insight?
Service management and automation
Which SDDC layer includes the Service-Catalog, Self-Service Portal and Orchestration?
Cloud Management Layer
Which SDDC layer includes VSphere, vSAN and NSX?
Virtual infrastructure layer
Which SDDC layer will you find Compute, Network and storage components?
Physical layer
What part of SDDC will you find the site Recovery Manager and vSphere Replication?
Business Continuity
What part of SDDC will you find NSX Microsegmentation and Carbon Black
Security
What components does vSphere+ consist of?
On premises and cloud components
vSphere+ on premises components
vCenter instances and ESXi hosts
Cloud gateway that connects vCenter instances to the VMware Cloud Console
vsphere+ cloud components
VMware cloud console, where you can centrally manage on-prem infrastructure and access cloud services
Cloud services for admins and developers that augment and enhance on prem capabilities
vSphere+ admin services
-inventory management
-Events and alerts management
-VM provisioning
-Lifecycle management
-Configuration management -
vSphere+ Developer Services
-Tanzu Kubernetes Grid
-Tanzu integrated services
vSphere+ Add on Services
-Disaster recovery
List of vSphere user interfaces
- vSphere Client
- PowerCLI
- VMware host client
- ESXCLI
What is host client mainly used for
managing individual hosts directly when vCenter Server is unavailable
What is PowerCLI
a command-line and scripting tool that is built on powershell. Provides a powershell interface to the vSphere API
What is ESXCLI mainly used for?
essential maintenance and troubleshooting purposes
What is a difference between vSphere and vSphere+
vSphere+ manages on-premises workloads from a cloud console
two interfaces that are available to an administrator for managing vCenter Server
vSphere Client and PowerCLI
2 problems admins face when deploying applications in a physical infrastructure
It is a time consuming process deploying a new application service on a new server
A one-to-one relationship exists between a physical computer and an application that it runs
what can you do with vm virtual disks that wont affect the functioning of the VM?
virtual disks can be moved rom one type of storage to another without affecting the functioning of the vm
ESXI can over commit memory, what does this mean?
when the combined virtual RAM of the powered-on VMs are larger than the physical RAM available on the host
What does the default resource allocation settings do?
all VMs associated with the same ESXi host receive an equal share of available resources
Difference between virtualization and emulation
emulators, programs can run on a computer system other than the one for which they were orginally writted
Virtualization, guest OS systems are designed for x64 processers letting the OS run natevily on the host physical x64 processors
