About SMART and HDD sleep mode in General Discussion Posted July 5, 2014 · Report reply It all depends on the actual HDD firmware solution, whether reading SMART attributes makes the drive spin up. It is not a software issue, but a firmware issue, that we cannot fix from AIDA64. You can configure disk temperature polling frequency in AIDA64 / main menu / File / Preferences / Hardware Monitoring. Measuring disk temperature is done by SMART attributes readout. Regards, Fiery I did not know that some hard drives allow SMART scan without waking up the drive. A simple yet brilliant concept that I had not dared to hope since I have not come across with one. There are software that both allows to set the SMART scan time interval and then does not wake up drives in sleep and only reads values from running drives, making it possible for drives to go into sleep and stay that way, at least the once I know that are interrupted by SMART scan. One example I know to give you is the Hard Disk Sentinel, which Iâ€™ve been using long time to safe guard my data: http://i58.tinypic.com/33artwp.jpg Are you saying that even if you configure the disk temperature polling frequency in AIDA64 longer than the set idle spin down time to sleep mode for disks it will wake all the drives not supporting SMART scan while in sleep at every scan? If so can you disable the SMART scans entirely and simply not utilize the drive monitoring features of the program?