What Are the Differences Between Target and Source Servers After the Migration?

**Table 1** Differences between target and source servers after the migration
Item	Can Be Changed	After Migration	Remarks
Security Identifier (SID)	Yes	The SID of the target server is used.	In Windows, a SID is a unique, immutable identifier for a server in a given domain. If the source server is added to a domain, the SID will become invalid on the target server. You need to add the target server to the domain again.
Host name	Possibly	The host name may be changed.	Services bound to the host name may be affected.
OS type	No	The target server runs the same type of OS as the source server.	The original OS of the target server is overwritten.
MAC address	Yes	The MAC address of the target server is used.	A MAC address is a unique identifier assigned to a NIC when a target server is created.
NIC name	Possibly	The names of NICs on the target server are determined by the NIC configuration files migrated from the source server.	You can modify the NIC names after the migration, or your services may be affected.
IP address	Yes	The IP addresses of the target server are used.	The target server uses its original public IP address. If the private IP address of the source server is included in the network segment of the VPC to which the target server belongs, the private IP address can remain unchanged.
DNS	The DNS settings are probably changed on the target server.	The DNS settings may be changed on the target server.	After the migration is complete, you can modify the DNS settings for the target server.
Disk name	Possibly	New disk names are generated based on the virtualization type of the target server.	Services are not affected.
Username	No	The target server uses the same username as the source server.	None
Password/Certificate	No	The target server uses the same username, certificate, and password as the source server.	None
Registry and startup items	Yes	The registry and BCD file are modified as needed.	SMS modifies the registry and startup items to adapt to the cloud platform.
Other data	No	Other data, including files, applications, and configurations, are consistent with those on the source server.	None