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DCV Fundamentals (Storage
Shared Storage to store VMs allows all hosts to…
DCV Fundamentals
Compute
vSphere
ESXi
Is a Type 1 Hypervisor that is responsible for abstracting the physical host's resources and virtualize these resources that can then be added to a pool of resources that can be leveraged by a cluster
ESXi hosts in a DC are managed by the vCenter Server
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vCenter
Manages vSphere components
Is accessed by vSphere Client (Flash or HTML
vc-01.lab.adms.local)
Can be deployed as a Server Appliance instead of on top of a Windows machine using PhotonOS.
Integrated Containers
Runs along with VMs on vSphere 6.5+ simplifying provisioning of infrastructure for Dev teams to test their new apps
Network
VMware virtualizes Network by abstracting physical Net resources and then segmenting this pool of resources and assigning to each app as needed.
It uses NICs and virtual switches
Uplink Adapters are the physical NICs that connect physical to virtual network.
NSX
Is VMware's platform for Net Virtualization
Net & Sec services are attached to VMs with a policy driven approach
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Virtual Networking Features
- VLANs
- Traffic Shaping
- Port Mirroring (monitoring traffic)
- QoS & DSCP (prioritization)
- NetFlow (monitor top talkers on a network)
- CDP & LLDP (allows switches to discover neighboring physical net switches)
Storage
Shared Storage to store VMs allows all hosts to access data from other ESXi hosts. Making specially useful if one of the hosts fail
vSAN
Runs natively as part of the ESXi. Uses storage policies to monitor during the VM lifecycle, if any error are found, vSAN takes remedial actions. Can use Hybrid or Flash.
Separate paid, NOT included with vSphere
Supported Protocols
NFS Network File System
Protocol used by NAS (Net Attached Storage) which provides File-Level access to different computers to the shared storage
FCoE (Fibre over Ethernet)
Reduces the number of netowork ports in use by combining Fibre and Ethernet on the same cable
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Virtual Volumes
New integration that virtualizes SAN/NAS arrays bringing better services to applications
iSCSI (aiscosi) Internet Small Computer Storage Interface
Common for connections between hosts and high performance storage. Common for VMFS data stores.
Datastores
In vSphere, VMs are stored in "Datastores". Datastores also store VM templates, ISO images & Floppy Images
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Virtual SAN
Can be enabled for a cluster. When done it creates a new datastore "Virtual SAN". Can provide different service level for each VM or V-Disk. in vCenter server, vSan appears as a set of capabilities that can be applied to each new VM.
Cloud Management Platform
Delivers and manages Applications and Infrastructure in Private/Hybrid/Public cloud
vRealize
Manage Downtime, cost through a unified management platform
vROPs (Operations)
Delivers intelligent Operational Insights to simplify management of customer's environments (virtual, physical and cloud)
Makes company more efficient, improve performance and avoids business disruptions
vRLI (Log Insight)
Delivers real-time log management (Reporting tool) for VMware environments. Uses Machine-Learning
Quick searches can be performed on a easy-to-use Interface
vRA (Automation)
Portal where Admin, Devs or Business users can request new IT services & Resources (Infra, apps & Desktops)
Improves cost control by exposing the cost of cloud resources
vRB (Business for Cloud)
Is a platform that IT companies can use to estimate the cost of cloud services along with predicting the future consumption cost with consumption reports.
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