SharePoint Production farm shut down and boot up sequence

Shut down SharePoint server by following sequence

1.       Web front end server ( Can shut down all web front end server at the same time )

2.       Application Server ( Can shut down all application server at the same time )

3.       Database Server (Can shut down all database server  at the same time )

Boot up SharePoint server by following sequence

1.       Database Server (Can boot up all database server   at the same time)

2.       [ Need to wait all DB server completely up ] Application Server (Can boot up all application server at the same time)

3.       [ Need to wait all Application server completely up ] Web front end server ( Can boot up all web front end server at the same time )