E. Hard Disk Set Up

[ : MENU > Setup > System > Harddisk > Harddisk setup]
You can set the duration of time after which HDD is to be put into standby mode.

Here, you can choose from
No Idle Server Mode
10 or 30 seconds
1, 2, 5,10, 20, 30 minutes
1, 2, 4 hours.

Once you set this option, press GREEN key to confirm the change.