One of my file server is using adaptec 81605 hardware raid adapter. I havent paid much attention to the temperature of the card, but recently I noticed that it is idling at 80 degrees Celsius. I've done some research on their operating temperature and I came across this docs. The doc also refer to this link for further explanation. The doc stated that operating temperature of the controller should be between 0 degrees Celsius to 55 degrees Celsius, yet the other link says maximum die operating temperature is 100 degrees Celsius. Warning will be issued at around 95 degrees Celsius. So my question is; the 55 degrees operating temperature they are talking about, is that a recommended running temp ?? or is it chassis ambient temperature ?? (the second docs have note after the tables that describe temperature is measured 1" away from the raid processor). Does this logic only works on adaptec raid controller ?? Let say i have a SSD or NVME with 0-60 degress operating temperature, is that mean the device smart temp monitor cannot exceed 60 degrees or the case ambient temperature should not go over 60 degrees ?