Term
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Definition
A collection of ESXi hosts and associated virtual machines intended to work together as a unit. When you add a host to a cluster, the host’s resources become part of the cluster’s resources. The cluster manages the resources of all hosts.
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Term
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Definition
An aggregation of all the different types of objects needed to do work in virtual infrastructure: hosts, virtual machines, networks, and datastores.
Within a datacenter there are four separate hierarchies.
n Virtual machines (and templates)
n Hosts (and clusters)
n Networks
n Datastores
The datacenter defines the namespace for networks and datastores. The folder defines the namespace for VMs, templates and clusters.
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Term
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Definition
| A virtual representation of underlying physical storage resources in the datacenter. A datastore is the storage location for virtual machine files. |
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Term
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Definition
| Folders allow you to group objects of the same type so you can easily manage them. For example, you can use folders to set permissions across objects, to set alarms across objects, and to organize objects in a meaningful way. |
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Definition
| A set of virtual network interface cards (virtual NICs), distributed switches or vSphere Distributed Switches, and port groups or distributed port groups that connect virtual machines to each other or to the physical network outside of the virtual datacenter. |
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Term
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Definition
| Resource pools are used to compartmentalize the CPU and memory resources of a host or cluster. Virtual machines execute in, and draw their resources from, resource pools. You can create multiple resource pools as direct children of a standalone host or cluster and then delegate control over them to other individuals or organizations. |
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Term
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Definition
| A master copy of a virtual machine that can be used to create and provision new virtual machines. Templates can have a guest operating system and application software installed, and can be customized during deployment to ensure that the new virtual machine has a unique name and network settings. |
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Term
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Definition
| A virtualized computer environment in which a guest operating system and associated application software can run. Multiple virtual machines can operate on the same managed host machine concurrently. |
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Term
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Definition
| vSphere vApp is a format for packaging and managing applications. A vApp can contain multiple virtual machines. |
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Term
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Definition
| Enables you to move running virtual machines from one ESXi host to another ESXi host without service interruption. It requires licensing on both the source and target host. vCenter Server centrally coordinates all vMotion activities. |
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Term
| Storage vMotion (Feature) |
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Definition
| A feature that allows you to move the disks and configuration file of a running virtual machine from one datastore to another without service interruption. It requires licensing on the virtual machine's host. |
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Term
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Definition
| A feature that enables a cluster with High Availability. If a host goes down, all virtual machines that were running on the host are promptly restarted on different hosts in the same cluster. |
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Term
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Definition
A feature that helps improve resource allocation and power consumption across all hosts and resource pools. vSphere DRS collects resource usage information for all hosts and virtual machines in the cluster and gives recommendations.
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Term
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Definition
A feature that enables you to manage multiple datastores as a single compute resource, called a datastore cluster. A datastore cluster is an aggregation of multiple datastores into a single logical, load-balanced pool. You can treat the datastore cluster as a single flexible storage resource for resource management purposes. You can assign a virtual disk to a datastore cluster, and Storage DRS finds an appropriate datastore for it. The load balancer takes care of initial placement and future migrations based on workload measurements. Storage space balancing and I/O balancing minimize the risk of running out of space and the risk of I/O bottlenecks slowing the performance of virtual machines.
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Term
| vSphere Fault Tolerence (Feature) |
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Definition
| vSphere Fault Tolerance provides continuous availability for virtual machines by creating and maintaining a Secondary VM that is identical to, and continuously available to replace, the Primary VM in the event of a failover situation. |
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Term
| vCenter Storage Monitoring (Plug in) |
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Definition
Included as part of the base vCenter install.
Allows you to review information on storage usage and to visually map relationships between all storage entities available in vCenter Server. |
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Term
| vCenter Hardware Status (Plug In) |
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Definition
Included as part of the base vCenter Server Install.
Uses CIM monitoring to display the hardware status of hosts that vCenter Server manages. |
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| vCenter Service Status (Plug in) |
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Definition
Included as part of the base vCenter Server install
Displays the status of vCenter Services |
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Term
| vSphere Update Manager (Plug in) |
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Definition
Installed separately
Enables administrators to apply updates and patches across ESXi hosts and all managed virtual machines. |
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Term
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Definition
Installed after vCenter Server installation
An application-aware firewall built for vCenter Server integration. vShield Zones inspects client-server communications and communications between virtual machines to provide detailed traffic analytics and application-aware firewall partitioning. vShield Zones is a critical security component for protecting virtualized datacenters from network-based attacks and misuse. |
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Term
| vCenter Orchestrator (Plug in) |
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Definition
Installed after vCenter Server Installation
A workflow engine that enables you to create and run automated workflows in your vSphere environment. vCenter Orchestrator coordinates workflow tasks across multiple VMware products and third-party management and administration solutions through its open plug-in architecture. vCenter Orchestrator provides a library of workflows that are extensible. You can use any operation available in the vCenter Server API to customize vCenter Orchestrator workflows. |
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Term
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Definition
Installed separately to vCenter Server (after) - 5.0 only (vDP in 5.1 is not included on the vCenter Server installer)
A disk-based backup and recovery solution that provides complete data protection for virtual machines. Data Recovery is fully integrated with vCenter Server to enable centralized and efficient management of backup jobs and includes data deduplication to minimize disk usage. |
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Term
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Definition
C# Client
Installed on windows
Primary interface for initial configuration and speccial admin tasks |
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Term
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Definition
Web app installed on a machine with network access to vCenter Server.
Available through IE & FF browsers in 5.0
In 5.0 includes a subset of functionality primarily related to inventory display and VM deployment and config. |
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Term
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Definition
A commandline interface for configuring an ESXi host.
The vSphere CLI can also be used to perform Storage vMotion operations on both ESXi hosts. |
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