Explain the difference between vpxd and vpxa. HOSTD- This is the agent of ESX server, where VPXA pass the information to the HOSTD and hostd pass the information to ESXi server. When an ESXi host is added to the vCenter server vpxa agent gets initiated and talk to vpxd service which runs in VCSA. So vpxd talks to vpxa & vpxa to hostd, this is how vpxd (vCenter) talks to hostd via vpxa. I will explain the difference, If you didn't get it.
___vpxd is a service that runs on vCenter Server. It’s the main vCenter service, without it, vCenter server does not function.
___vpxa is a service that runs on ESXi hosts which are connected to vCenter Server. vpxa is the link between vpxd and hostd (which processes ESXi related tasks).
What is the difference between a Type 1 and Type 2 VMware hypervisors. Type 1 and Type 2 EXPLAIN!
Type 1 hypervisors are those which run directly on hardware Ex: "Servers, Desktops or Laptops for labs" this is the most powerful O/S VMware’s vSphere ESXi hypervisors.
Type 2 hypervisors run on software, or more specifically are typically installed as an application on top of Ex: Windows O/S. This would include VMware Workstation and Fusion.
One of your ESXi Hosts (Hypervisor) just failed so what will happen to the Virtual Machines running on it? Okay, the VMs will definitely power off and if vSphere High Availability (HA) was correctly configured in the cluster nothing should happen to the VMs. The VMs will try to restart on another host, but there are things that will stop a Virtual Machine from being restarted on another Hypervisor like “restart policy”.
If HA is enabled but the Virtual Machine restart policy is disabled then the VM will not be restarted on another host ignoring the HA master election process. Also, an incorrect Admission Control settings & resource availability on the host will stop the VMs to restart on another ESXi. Hey guys, the key thing to remember is that HA will not trigger a vMotion.
Having sold & implemented VMware HORIZON the Virtual Desktop Infrastructure (VDI) solutions for customers for many years, there are definitely benefits in deploying VDI in a small- to mid-size enterprise (SME) businesss. Huge benefits. The cost benefit just usually isn't there. Build a VDI Environment for Your Organization and Architect Your Workplace of the Future.
Cost and space savings, Hardware reducing, Energy saving, High availability, Disaster recovery, Better return on investment, Better scalability, Faster redeployment, Easier backups, No vendor lock-in, Easier migration to cloud, Less heat buildup, Increased Security, Business Continuity, Testing environment, Increase uptime, Isolate applications, Faster server provisioning and more. It’s clear to see the benefits of virtualization in general, are numerous.
If you're new to virtualization, interested in improving your chances to Get Hired - Be Promoted, earn certifications and who may either be in school currently, searching for a new job or simply trying to gain more knowledge. We're hosting a YouTube LIVE on Virtualization & Cloud Computing.
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(1) Thin Disk. Uses the space as needed for the initial function. It can be greater than the real space, an over-subscription is possible. The total space for the VM disks on the datastore can be greater than the actual size.
(2) Thick Lazy Zeroed Disk. All the space given, is taken when the VM is created. The blocks containing older data on the storage are cleared when the VM writes new data to the disk for the first time.
(3) Thick Eager Zeroed Disk. Takes much longer to create a disk than other types of disks and increasing the size takes too much time. All disk space is taken at the time of creation, and all storage blocks that was there are wiped out .
Conclusion: Eager zeroed thick-provisioned got the best for performance and security. Lazy zeroed thick-provision are much better for short creation times, but faster than eager zeroed & less secure. Thin-provisioned disks are the best choice to save datastore space.
VMware FT vs VMware HA. Fault Tolerance guarantee zero downtime but HA still comes with some downtime. HA load balancer or hypervisor, to detect a problem and restart the VMs can add up to minutes or even hours. FT keeps VM copies on a separate host machine. With only HA configured, the hypervisor attempts to restart the VM on the same host cluster. With FT, the VM workload is moved to a separate host.
VMware’s Fault Tolerance (FT) and High Availability (HA) protect virtual machine (VM) operation in the event of an ESX/ESXi host failure. Fault-tolerant instantly move to a new host but high-availability HA cannot prevent VM failure it will see the VMs fail with the host before restarting on another host. Fault tolerance mean you don't lose the in-memory application state in the event of a failure such as a host crash. Fault Tolerance is much harder than high availability in a virtual environment.
With us, you get the perfect blend of both concepts and real-world experience. ITSA provides training for those who are new to virtualization, interested in improving their chances to Get Hired - Be Promoted, earn certifications and who may either be in school currently, searching for a new job or simply trying to gain more knowledge. ▶ ITSA Tutorials
VMware's NSX hypervisor is the platform to manage virtualized network deployments. NSX is best known for the ability to provide zero-trust security between virtual machines, many tech analysts believe the time of the software-defined network (SDN) has arrived. In the Software-Defined Data Center (SDDC), all aspects of operations depend on NSX.
The primary difference between NSX for vSphere and NSX-T is the vCenter integration--NSX-T doesn't have the tight vCenter integration of NSX for vSphere. VMware has has two tracks for the VMware NSX platform: NSX for vSphere and NSX-T.
👽 This diagram below is of traditional HORIZON VDI environments, in this example each pod is independent entity and must be managed separately. In this example each pod has its own locally managed entitlements.
