I have two systems with an SSD system drive and a Black 500GB WD5002AALX internal data drive. Windows was installed with the BIOS set to AHCI. On both systems, if I don’t access the Black for some time (30 minutes?), it appears to spin down. What I mean by this is that if I double-click on a folder on that drive in My Computer, there is a five second delay before the folder shows the contents. I suspect it is either IntelliPower or Windows spinning it down as a power-saving measure. If I constantly access the data, the response is immediate. Windows 7 does not appear to offer the option of “always spin hard drives while Windows is running.”
Is the WD5002AALX an IntelliPower drive albeit one which spins at 7200 rpm?