safe HDD temps

[computerwiz1101]

So i have a old emachines running unraid...it says the hdd temp is 95, is that too hot, also can anyone tell me why the hdd is always running or seem like it is?

 

[InvalidError]

Around 30-35C is a pretty normal temperature for HDDs. HDDs are designed with thermal expansion in mind and cooling them below their intended working temperature can cause accelerated wear due to tolerances being out of intended specs.

Google or someone else did a failure analysis across thousands of drives and found that drives operating at 25C or less had significantly higher failure rates.

 

[BFG-9000]

Is that Fahrenheit? 95F is 35C, well within the rated 60C of most drives.

Both Google Cloud and Backblaze have found no correlation between temperature and failures (within reasonable ranges).

unRAID is likely designed to never sleep the drives so they are always available without an annoying spinup time. Most RAID cards are the same way, and you should be glad your drives' firmware does not spin down automatically, because many drives that do so cause broken RAID arrays when they fail to respond within the timeout period, making the RAID controller think they died. For a single disk it's no problem.

 

[computerwiz1101]

Thanks all for the response! thanks alot!

 

[OddyTrapKing]

is it doesnt show more than 40c° ur good to go bro.
actually safe hdd temps are betwwen 29-37° it depends on how many rpm and storage.