Weird Temp with HDs

[ToddW2]

I have a 5-Bay Synology NAS.
I have 5 WD drives.
3 x WD SE
2 x WD RE
All drives are 2 TB each, all purchased within last couple months, all were NIB.

All 3 SEs TEMP: 86-88 *F
All 2 REs TEMP: 95-100 *F

I've never seen the RE drop into SE temp, and never the SE into RE temp. Even during the RAID check, HD sector check when setting up the RAID originally. The REs have always been warmer.

Anyone notice this, any idea?

I have my Synology NAS fans on "cool mode" so they're supposed to keep it "COOLER" but it really didn't drop temps at all.

 

[ToddW2]

Anyone else using these or have seen their temps?

 

[mwroobel]

The RE drives support SED and have a slightly higher clocked processor which may or may not make a difference in temps. The proximity to the fan(s) and vent(s) could also make a difference as can the general design of the drive. The RE drives seem to have a 5-14% average increase in average power requirements SE RE which will also affect the temperatures. None of them temps you are seeing are in any way out of the norm nor is it anything to worry about.