Max length of SQL Server instance name?

Question

I need to know the maximum character length for the name of an instance of a SQL Server for the following versions (if there is a difference between them.)

• SQL Ser

Answer 1

jl: sp_dropserver 'oldname' go sp_addserver 'newname_greater_than_15_characters','local' go I believe this is for the server name and not the instance name.