Fan noise after upgrade to version 5

I have upgraded to version 5 almost a month ago. Indexing seems to be over, fan noise is still there. Is that the NAS will never sleep?

Having the same exact issue. It seems to be constantly running ever since I updated.

I read somewhere that indexing is a long process but I wouldn’t believe it’s as long as that.

I have still this issue and I keep it off most of the time
Any update with the case?