...I just came accross a strange effect in DrivePool UI.
I just had one older 2TB drive started dying on me in my pool and decided to do some upgrades before more of that *hit is going to happen...
This included employing Stablebit Scanner (running the Trial Licences atm)
I am now in the process of swapping drives in and out, moving to fewer and larger drives (going to migrate to a bunch of 8TB SMR disks and SSD optimizer).
During the current drive remove run, Scanner UI reports the drive temps consistently fine while in DrivePool UI, I see the temps (currently of one particular drive) "flip"/change after a while.
Meaning Scanner reports temp for that drive as 42C...Drivepool UI, when brought up, also starts to report 42C but "flips" to 24C after approx 60secs time 
Any Ideas what is going on?
BTW:
The drive in question is a new Seagate 8TB Archive v2...all drives are on a LSI 2008 and I am *not* doing hotswap.
Drivepool V2.1.1.561 - Scanner V2.5.1.3062 - Win8.1Pro 64bit