Did anyone try to play with the Advanced Power Management (APM) for 7k2000 ? The Default is 255 (Disabled), so the heads stay always on the platter, thus more heat is generated. Wondered if anyone tried to set APM=128 in ftool, the temperature should go down, if the hard drive is not constantly accessed, only from time to time. Also, the LCC (Load/Unload Cycle Count) would start to increase. Anyone any experience with this ? It is a little difficult for me to use the ftool, since the drive is in an external eSATA enclosure and ftool doesn't recognize it; so each time I want to change APM I have to take the drive out and install it in a desktop computer.
Interestingly, for my WD3200BEKT drive, the APM = 254 or 255 do not increase the LCC, while APM = 253 or smaller values impose head parking about 20-30 times/hour. However, the temperature with APM=254,255 increases by ~8-10 deg C. I would like to know if this effect is observed by someone on the Hitachi 7k2000 drives.