VM与VPC共存（续）-阿里云开发者社区

VM和VPC是大家熟知的虚拟机软件了。有人喜欢VM，有人喜欢VPC，萝卜白菜，各有所爱。

VM优点：支持USB设备；虚拟网卡众多，可以模拟多子网环境；显卡驱动要比VPC好，VPC只支持1280*800分辨率以下，我的1366*768无法全屏；VM自带录像功能，可以做视频教学；VM自带snapshot功能，误操作时还可以回滚。

VM缺点：跑Windows系统确实不如VPC占资源小，速度快。

VPC优点：跑Windows系统确占资源小，速度快，这恐怕是唯一的亮点了。

VPC缺点：显卡驱动在1366*768的分辨率下无法完整的全屏，尤其是对linux的图形化支持更是花屏严重；网卡仅仅包含宿主机的物理网卡和虚拟网卡，有时候做多子网环境还得利用loopback网卡，蓝牙网络，无线网卡等。

所以我一般都是VM和VPC结合使用，做cluster实验时偶尔还用到VS2005。在较早的机器上做实验时，因为机器硬件不支持虚拟化，所以不存在VM和VPC冲突的问题，当我新买了一台I5的本本后，发现VM总是和VPC冲突，并且如果同时打开多个VPC机器，还可能导致物理机蓝屏。

在网上搜索过相关的问题，大部分的矛头都指向VPC中的一个选项：

但是我将虚拟化功能Disable之后打开VPC还是会让正在运行的VM出现中断。

后来，无意中用UltraEdit（记事本也可）打开vmc文件时，仔细看了下里面的代码，代码并不复杂。

<?xml version="1.0" encoding="UTF-16"?>
<preferences>
<version type="string">2.0</version>
<alerts>
<notifications>
<no_boot_disk type="boolean">true</no_boot_disk>
</notifications>
</alerts>
<hardware>
<memory>
<ram_size type="integer">512</ram_size>
</memory>
<pci_bus>
<ethernet_adapter>
<controller_count type="integer">1</controller_count>
<ethernet_controller id="0">
<virtual_network>
<id type="bytes">0EB745BD4AB811E081C895FBFEB63705</id>
<name type="string">Intel(R) WiFi Link 1000 BGN</name>
</virtual_network>
<ethernet_card_address type="bytes">0003FF40EB61</ethernet_card_address>
</ethernet_controller>
</ethernet_adapter>
<video_adapter>
<vram_size type="integer">8</vram_size>
</video_adapter>
<ide_adapter>
<ide_controller id="1">
<location id="0">
<drive_type type="integer">2</drive_type>
<pathname>
<absolute type="string" />
<relative type="string" />
</pathname>
</location>
</ide_controller>
<ide_controller id="0">
<location id="0">
<drive_type type="integer">1</drive_type>
<pathname>
<absolute type="string">G:\VPC2007\Lab-CHS\WINXP-PRO-SP3\WINXP-PRO-CHS-SP3.vhd</absolute>
<relative type="string">.\WINXP-PRO-CHS-SP3.vhd</relative>
</pathname>
<undo_pathname>
<absolute type="string">G:\VPC2007\Lab-CHS\WINXP-PRO-SP3\VirtualPCUndo_WINXP-PRO-CHS-SP3_0_0_0_10013408212011.vud</absolute>
<relative type="string">.\VirtualPCUndo_WINXP-PRO-CHS-SP3_0_0_0_10013408212011.vud</relative>
</undo_pathname>
</location>
</ide_controller>
</ide_adapter>
</pci_bus>
<standard>
<name type="string">Virtual PC 2007</name>
<version type="string">0001.0000.0000</version>
</standard>
<super_io>
<floppy id="0">
<pathname>
<absolute type="string" />
<relative type="string" />
</pathname>
</floppy>
<floppy>
<auto_detect type="boolean">true</auto_detect>
</floppy>
<parallel_port>
<port_shared type="boolean">false</port_shared>
<port_type type="integer">0</port_type>
</parallel_port>
<serial_port>
<connect_immediately type="boolean">false</connect_immediately>
</serial_port>
</super_io>
<bios>
<base_board>
<serial_number type="string">5284-0211-5760-6543-5348-2456-30</serial_number>
</base_board>
<bios_guid type="string">{D30B7F05-B995-44E6-A333-64507F56B2AB}</bios_guid>
<bios_serial_number type="string">5284-0211-5760-6543-5348-2456-30</bios_serial_number>
<chassis>
<asset_tag type="string">5284-0211-5760-6543-5348-2456-30</asset_tag>
<serial_number type="string">5284-0211-5760-6543-5348-2456-30</serial_number>
</chassis>
<cmos type="bytes">00004000F020378002FFFF2F00FF3F1000003FFF3F1000003F31004C0707070707E9FFFF208580FF01000000200C01800CFC00000000000000000000000000901A32E252580050E999E62401002784004A2080240000000000085AACFE1032547698BAE400000000000003000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000</cmos>
<time_bytes type="bytes">11003900170000210811</time_bytes>
</bios>
</hardware>
<integration>
<microsoft>
<mouse>
<allow type="boolean">true</allow>
</mouse>
<video>
<user_selected>
<depth type="integer">16</depth>
<height type="integer">480</height>
<width type="integer">640</width>
</user_selected>
</video>
</microsoft>
</integration>
<properties>
<creator>
<build type="string">6.0.156.0</build>
<name type="string">Microsoft Virtual PC 2007</name>
</creator>
<modifier>
<build type="string">6.0.192.0</build>
<name type="string">Microsoft Virtual PC 2007</name>
</modifier>
</properties>
<settings>
<shutdown>
<prompt type="boolean">true</prompt>
<quit>
<action type="integer">4</action>
<was_running type="boolean">true</was_running>
</quit>
<save>
<enable type="boolean">true</enable>
</save>
<shutdown>
<enable type="boolean">true</enable>
</shutdown>
<turn_off>
<enable type="boolean">true</enable>
</turn_off>
<last_shutdown>
<choice type="integer">3</choice>
<commit type="boolean">false</commit>
</last_shutdown>
</shutdown>
<sound>
<sound_adapter>
<enable type="boolean">true</enable>
</sound_adapter>
</sound>
<startup>
<automatic>
<type type="integer">2</type>
</automatic>
</startup>
<undo_drives>
<enabled type="boolean">true</enabled>
<purposely_kept type="boolean">false</purposely_kept>
<use_default type="boolean">true</use_default>
</undo_drives>
<video>
<disable_resize type="boolean">false</disable_resize>
<full_screen type="boolean">false</full_screen>
<mode>
<full_screen>
<startup type="boolean">false</startup>
</full_screen>
</mode>
<resolutions>
<standard_only type="boolean">false</standard_only>
</resolutions>
<height type="integer">600</height>
<left_position type="integer">151</left_position>
<max_height type="integer">600</max_height>
<max_width type="integer">800</max_width>
<top_position type="integer">62</top_position>
<width type="integer">800</width>
</video>
<guest_os type="integer">3</guest_os>
</settings>
<virtual_machines>
<hw_assist>
<enable_hw_assist type="boolean">true</enable_hw_assist>
</hw_assist>
<allow_packet_filtering type="boolean">false</allow_packet_filtering>
<allow_promiscuous_mode type="boolean">false</allow_promiscuous_mode>
</virtual_machines>
</preferences>