Using a brand new My Book Duo with an iMac. After 30 minutes (the default), the drive goes to sleep if not in use, and the status LCD flashes slowly.
After that, the disks still exist on the desktop but opening the disk does not wake up the drive, and all the files are gone, as if the disk is empty. If I try to add a file or unmount the volume, there is an error.
The only way to get access again is to restart the computer. I’m not comfortable cycling power to the drives when the OS still thinks they’re mounted.
I have tried disabling sleep entirely in WD Drive Utilities and turning on drive sleep in the Energy Saver control panel. Same behaviour.
If I turn off all sleep, the drive stays spinning and status LED is solid, but the drive is very warm, even after hours of not being used.
Notes about my configuration:
- I’m using a USB 2.0 connection. Yeah, slow - but it’s just a backup drive and I plan to get a new iMac when they come out in October and USB 3.0 will be available
- I’m using the Duo in JBOD mode. I encrypted both individual volumes with Disk Utility.