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.
