How hot is hot for HDDs?

[VenomousDesigns]

Currently have a Norco 4224 with a mixture of Samasung 1TB F3's and Samsung 2TB F4EG's running 24/7 - currently their floating around the 40/41°C mark and was wondering if this was fine?

Currently have 3xNoctura NF-P12's on the Backplate pushing towards my CPU Noctura NH-U12P SE2, again pushing towards the back exhaust fans which are 2xNoctura NF-R8

Cheers,
VD

 

[drescherjm]

I would say over 50C is hot. 41C is totally fine.

http://www.hard-drive-help.com/hard-drive-temperature.html

 

[SicKlown42012]

Google did a study of their HDDs and looked at failure rates with regards to temperature, age, and other factors. It showed that ideally you'd want to keep the drive in the 30-35C range. At your temp, the rate was higher but still low.
http://research.google.com/archive/disk_failures.pdf

 

[VenomousDesigns]

Cheers for the replies, just bloody hot here downunder - nothing else I can do I guess, just have Ceiling Fan on, and hope for the best til Summer is over haha.