61 terms

Vsphere Exam Flashcards

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Admission Control
Imposes constraints on resource usage and any action that would violate these constraints is not permitted.
Agent
Privileges control operations related to ESX Agent Manager and agent virtual machines.
APD
All Paths Down- A datastore is shown as unavailable in the Storage view. Dead or error.
Appliance
pre-configured virtual machine image, ready to run on a hypervisor
Bare Metal
ESXi installs directly onto your physical server enabling it to be partitioned into multiple logical servers referred to as virtual machines.
Bios
non-volatile firmware used to perform hardware initialization during the booting process (power-on startup) and to provide runtime services for operating systems. Basic input output systems
Cluster
Datastore cluster privileges control the configuration of datastore clusters for Storage DRS.
DCUI
Direct Console User Interface. The dcui user runs on hosts and acts with Administrator rights.
Dedicated Failover Host
With dedicated failover hosts admission control, when a host fails, vSphere HA attempts to restart its virtual machines on any of the specified failover hosts.
DNS
Domain Name System
DRS
Distributed Resource Scheduler
ESXi
deploying and serving virtual computers. (host)
Failover
Incase a host fails, everything gets sent to another host.
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.
Graft
You can supply a name for that new top-level resource pool. The default is Grafted from <host_name>.
Guest Machine
OS is installed directly into the VM.
Guest OS
the OS installed onto the VM that doesn't affect the physical device
HA (High Availability)
Ensures that sufficient resources in the cluster are reserved for virtual machine recovery in the event of host failure.
Heartbeat
vSphere HA can monitor hosts when a management network partition occurs and continue to respond to failures.
Host Machine
the hardware that provides it with computing resources such as processing power, memory, disk and network I/O (input/output), and so on.
Hyper visor
computer software, firmware or hardware that creates and runs virtual machines.
iSCSI
a protocol that uses the TCP to transport SCSI commands, enabling the use of the existing TCP/IP networking infrastructure as a SAN. ( Internet Small Computer Systems Interface)
latency
connection/lag
Load Balancing
how network traffic is distributed between a physical and virtual machine.
Log bundle
provides progress status for the creation and downloading of the support bundle from each source.
LUN queue depth
the maximum number of ESX/ESXi VMkernel active commands supported by the LUN.
NFS
Network Filesystem Storage
No Automation
Manual mode
NTP
Network Time Protocol
Overcommitted
raises the consolidation ratio, increases operational efficiency, and lowers total cost of operating virtual machines.
PDL
Permanent Device Loss- A storage device is considered to be in the permanent device loss state
Reset to green
An alarm triggered by an event might not reset to a normal state if vCenter Server does not retrieve the event that identifies the normal condition
Resource Pool
Ensures that a resource pool has sufficient resources to satisfy the reservations, shares, and limits of all virtual machines associated with it.
SAN
a storage feature integrated into vSphere (Storage Area Network)
SMASH
(Systems Management Architecture for Server Hardware)
Standard Switch
provide network connectivity to hosts and virtual machines
Storage map
helps you visually represent and understand the relationships between an inventory object
System logs
lists log files associated with vmware system
Triggered alarms
alarms that went off
vCenter
provides centralized management and operation, resource provisioning and performance evaluation of virtual machines residing on a distributed virtual data center.
vCenter Client
vSphere Client is installed on laptop or desktop PC and is used to access ESXi Server to install and manage virtual machines on ESXi server
vCenter Server
vCenter server is installed as virtual machine on top of ESXi server.
VDS
VMware vSphere Distributed Switch
Virtual Machine
a software computer that, like a physical computer, runs an operating system and applications.
Virtualization
to create a virtual version of a device or resource, such as a server, storage device, network or even an operating system where the framework divides the resource into one or more execution environments.
VM boot order
the order the vm's boot up and anything else on the VM
VMCP-
Virtual Machine Component Protection
VMFS
Virtual Machine File System
Vmkernel port
special constructs used by the vSphere host to communicate with the outside world
VSS
Volume Snapshot Service
VMRC
VMware Remote Console
...
VMFS
(Virtual Machine File System)
is VMware, Inc.'s clustered file system used by the company's flagship server virtualization suite, vSphere. It was developed to store virtual machine disk images, including snapshots.
High Availability (HA)
A clustering solution to provide resource reliability and availability.
ballooning
膨脹的
Distributed
(a.)分散對齊
DCUI
(Direct Console User Interface)
ESXi的內建管理控制台
(用Linux核心,預設root)
TSM
(Tech Support Mode)
ESXi Shell類似 Linux Shell
(預設未開啟,要手動停止,不能隨機)
MTU
(Maximum Transmission Unit)
最大傳輸單位
1500 =
PSC
(Platform Services Controller)
vCenter Single Sign on
身分驗證服務
vPostgre
vCenter Server database
內建,系統小,為各項管理元件存放資料庫
VCSA
vCenter Server Appliance