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|System Administration Guide: Naming and Directory Services (NIS+)|
You can use nisbackup and nisrestore to quickly replace a machine that you are using as a server with another machine. For example, you want to improve network performance by replacing an older server with a newer, faster machine.
To replace a machine being used as an NIS+ server with another machine, you must:
Assign the new machine the same IP address as the older machine it is replacing.
Assign the new machine the same machine name as the older machine it is replacing.
Connect the new machine to the same subnet as the older machine it is replacing.
To replace a server machine, follow these steps:
See Backing Up an Entire NIS+ Namespace. (Note that the old server you are replacing could be the master server for the domain, in which case you would run nisbackup on this old master server.)