The principle of complete replication of virtual machines (cloud computing)

Complete replication principle:

Completely copying a virtual machine refers to creating a complete virtual machine except for an independent virtual machine directly based on the meta virtual machine (that is, a common virtual machine template).In this way, the created virtual machine and the source virtual machine are two completely independent entities, and the modification or even deletion of the source virtual machine will not affect the operation of the copied virtual machine

SID Security Identifier:

Security identifiers are unique numbers that identify users, groups, and computer accounts.

Security Identifiers (SIDs) are unique numbers that identify users, groups, and computer accounts.When the account is first created, a unique SID is issued to every account on the network.Internal processes in Windows 2000 will refer to the account's SID rather than the account's user or ancestor name.If you create an account, delete the account, and then create another account with the same username, the new account will not have the rights or permissions granted to the previous account because the account has a different SID number.Security identifiers are also known as security IDs or SIDs.

Benefits of Sysprep:

Sysprep offers the following benefits:

◇Remove system-specific data from Windows.Sysprep can remove all system-specific information from an installed Windows image, including computer Security Identifier (SID).Windows installations can then be captured and installed through the organization.

◇Configure Windows to boot into audit mode.Use audit mode to install Third-party applications and device drivers, and test computer functionality.

◇Configure Windows to boot into Windows Welcome.Configure your Windows installation to enter Windows Welcome the next time you start your computer.Typically, the system is configured to boot into Windows Welcome immediately before the computer is shipped to the customer.

◇Reset WindowsProduct activation.Sysprep can reset Windows Product Activation up to three times.