when you are restarting SQL Server, SQL Server compiles and links EVERY DLL that you have generated in the past. Compiling and linking every Hekaton DLL takes some CPU time, and during that phase your database is in the RECOVERY phase, which means it is unaccessible from a users perspective!

SQL Server 재시작시 Hekaton dll 들은 다시 컴파일 되고 링킹 된다. (헐... 서버 시작 할때 오버 헤드가 있겠군여.)