Терминология VMWare/vSphere/vServer

Рассмотрим 28 понятий/терминов из области VMWare/vSphere/vServer.


ESXi: Hypervisor. The first name was Elastic Sky, now it is a name of the band.

vmkernel: “operating system” that runs ESXi and delivers storage networking for VMs.

VMFS: Virtual Machine File System for ESXi hosts, a clustered file system for running VMs.

DRS: Distributed Resource Scheduler, service that manages performance of VMs.

RDM: Raw Device Mapping

pRDM: Physical mode raw device mapping, presents a LUN directly to a VM.

vRDM: Virtual mode raw device mapping, encapsulates a path to a LUN specifically for one VM in a VMDK.

vMotion: A VM migration technique.

Storage vMotion: A VM storage migration technique from one datastore to another.

vSwitch: A virtual switch, places VMs on a physical network.

vDS: vNetwork Distributed Switch, an enhanced version of the virtual switch.

VMkernel Port: services to the vSphere host (not VM): Management, vMotion, FT, Replication. iSCSI, NFS.

LUN: Logical unit number, identifies shared storage (Fibre Channel/iSCSI).

SAN: Storage area network, a shared storage technique for block protocols (Fibre Channel/iSCSI).

NAS: Network attached storage, a shared storage technique for file protocols (NFS).

FCoE: Fibre Channel over Ethernet, a networking and storage technology.

HBA: Host Bus Adapter for Fibre Channel storage networks.

NFS: Network file system, a file-based storage protocol.

DAS: Direct attached storage, disk devices in a host directly.

VSAN: Virtual SAN, a new VMware announcement for making DAS deliver SAN features in a virtualized manner.

Host Profiles: Feature to deploy a pre-determined configuration to an ESXi host.

HA: High Availability, will restart a VM on another host if it fails.

FT: Fault Tolerance, обеспечивает непрерывную работу сервера/сервиса даже в случае его падения.

vCenter Server Heartbeat: Will keep the vCenter Server available in the event a host fails which is running vCenter.

Virtual Appliance: A pre-packed VM with an application on it.

vCenter Server: Server application that runs vSphere.

vCSA: Virtual appliance edition of vCenter Server.

vCenter Linked Mode: A way of pooling vCenter Servers, typically across geographies.