Heat sensors for an external HDD

Because I cant go out to buy one of these : {big ass SCSI drives}, I got myself one of these {big ass IDE drive in a USB2 Enclosure}. Now the tricky bit - the enclosure has no form of cooling, except for the fact that its made out of some super heat conductive metal.

For me, having seen so many hdd's fail due to heat and shock, thats not really a very comfortable situation to be in. smartctl isnt smart enough to watch temp on an external drive, and lm_sensors does not have any form of exposure to this either.

Just wondering how other people, who might have had a similar predicament, worked around this situation ? Did I mention that this hdd is going to be running 24/7 ?

--
Karanbir Singh { http://www.karan.org/ {

[ Music : Orson - Bright Idea ]