Seafile FUSE extension keeps hard-drive awake

Dear all,

I want to run Seafile’s FUSE extension together with PLEX. My Seafile server saves onto a hard-drive, which I have set up to go to sleep after 20 min of inactivity. What I have realized is that when I turn on Seafile’s FUSE extension, the hard-drive stays on all the time, that is, it never goes to sleep, while if FUSE is off, it goes to sleep as expected. This happens regardless of whether PLEX is on or off, or whether I try access a file “directly”.
Is this the expected behaviour, or is there a way to set up the FUSE extension so that it would waccess the hard-drive only when some app actually requests a file?

Any input is welcome!

Thanks a lot in advance.