Cài đặt, cấu hình cơ bản CentOS 7 Minimal

[B]Available Network Adapters[/B]

Only  those network adapters that are appropriate for the virtual machine you  are creating are available configuration options in the Choose Networks  window.

[LIST]
[*][B]Vlance[/B]: This is an emulated version of the AMD  79C970 PCnet32- LANCE NIC, and it is an older 10 Mbps NIC with drivers  available in most 32-bit guest operating systems except Windows Vista  and later. A virtual machine configured with this network adapter can  use its network immediately. 
[*][B]VMXNET[/B]: The VMXNET virtual network adapter has  no physical counterpart. VMXNET is optimized for performance in a  virtual machine. Because operating system vendors do not provide  built-in drivers for this card, you must install VMware Tools to have a  driver for the VMXNET network adapter available. 
[*][B]Flexible[/B]: The Flexible network adapter  identifies itself as a Vlance adapter when a virtual machine boots, but  initializes itself and functions as either a Vlance or a VMXNET adapter,  depending on which driver initializes it. With VMware Tools installed,  the VMXNET driver changes the Vlance adapter to the higher performance  VMXNET adapter. 
[*][B]E1000[/B]: An emulated version of the Intel  82545EM Gigabit Ethernet NIC. A driver for this NIC is not included with  all guest operating systems. Typically Linux versions 2.4.19 and later,  Windows XP Professional x64 Edition and later, and Windows Server 2003  (32-bit) and later include the E1000 driver.

[B]Note[/B]: E1000 does not support jumbo frames prior to ESXi/ESX 4.1. 
[*][B]E1000e[/B]: This feature emulates a newer model of  Intel Gigabit NIC (number 82574) in the virtual hardware. This is known  as the "e1000e" vNIC. e1000e is available only on hardware version 8  (and newer) virtual machines in vSphere 5. It is the default vNIC for  Windows 8 and newer (Windows) guest operating systems. For Linux guests,  e1000e is not available from the UI (e1000, flexible vmxnet, enhanced  vmxnet, and vmxnet3 are available for Linux). 
[*][B]VMXNET 2 (Enhanced)[/B]: The VMXNET 2 adapter is  based on the VMXNET adapter but provides some high-performance features  commonly used on modern networks, such as jumbo frames and hardware  offloads. This virtual network adapter is available only for some guest  operating systems on ESXi/ESX 3.5 and later. Because operating system  vendors do not provide built-in drivers for this card, you must install  VMware Tools to have a driver for the VMXNET 2 network adapter  available.

VMXNET 2 is supported only for a limited set of guest operating systems.

To  determine if the the VMXNET 2 (Enhanced) adapter is supported for your  guest operating system and vSphere ESXi version, see the [URL="http://www.vmware.com/resources/compatibility/search.php?deviceCategory=software&testConfig=16"]VMware Compatibility Guide[/URL].
[B]
Notes[/B]:
[LIST]
[*]You  can use enhanced VMXNET adapters with other versions of the Microsoft  Windows 2003 operating system, but a workaround is required to enable  the option in the VMware Infrastructure (VI) Client or vSphere Client.  If Enhanced VMXNET is not offered as an option, see [URL="http://kb.vmware.com/selfservice/search.do?cmd=displayKC&docType=kc&docTypeID=DT_KB_1_1&externalId=1007195"]Enabling enhanced vmxnet adapters for Microsoft Windows Server 2003 (1007195)[/URL]. 
[*]Jumbo frames are not supported in the Solaris Guest OS for VMXNET 2. 
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[*][B]VMXNET 3[/B]:  The VMXNET 3 adapter is the next generation of a paravirtualized NIC  designed for performance, and is not related to VMXNET or VMXNET 2. It  offers all the features available in VMXNET 2, and adds several new  features like multiqueue support (also known as Receive Side Scaling in  Windows), IPv6 offloads, and MSI/MSI-X interrupt delivery. For  information about the performance of VMXNET 3, see [URL="http://www.vmware.com/pdf/vsp_4_vmxnet3_perf.pdf"]Performance Evaluation of VMXNET3 Virtual Network Device[/URL].  Because operating system vendors do not provide built-in drivers for  this card, you must install VMware Tools to have a driver for the VMXNET  3 network adapter available.

VMXNET 3 is supported only for virtual machines version 7 and later, with a limited set of guest operating systems.

To determine if the the VMXNET3 adapter is supported for your guest operating system and vSphere ESXi version, see the [URL="http://www.vmware.com/resources/compatibility/search.php?deviceCategory=software&testConfig=16"]VMware Compatibility Guide[/URL].

[B]Notes[/B]:
[LIST]
[*]In ESXi/ESX 4.1 and earlier releases, jumbo frames are not supported  in the Solaris Guest OS for VMXNET 2 and VMXNET 3. The feature is  supported starting with ESXi 5.0 for VMXNET 3 only. For more  information, see [URL="http://kb.vmware.com/selfservice/search.do?cmd=displayKC&docType=kc&docTypeID=DT_KB_1_1&externalId=2012445"]Enabling Jumbo Frames on the Solaris guest operating system (2012445)[/URL]. 
[*]Fault Tolerance is not supported on a virtual machine  configured with a VMXNET 3 vNIC in vSphere 4.0, but is fully supported  on vSphere 4.1. 
[*]Windows Server 2012 is supported with e1000, e1000e, and VMXNET 3 on ESXi 5.0 Update 1 or higher. 
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