Mysql disk - writes

[wxdqz]

hi,

i am making a small financial package in php and mysql. for this, i have to know how often mysql writes to the disk so that if the server should crash or power failure, i know that the data is safe.

also can someone pls tell me when i shut down the mysql daemon in windows, why does my harddisk get accessed for continous 10-20 secs?


thanks for any reply
steve