Scheduled backups failing using WD MyBook USB HD

[timslim]

Hullo,

I've just recently registered superduper - and have been able to do manual backups. I have a scheduled backup for 3:30am and have set the energy settings to wakeup my iMac at 3:25am.

My external HD is a Western Digital myBook - 300GB, with just the USB2 connection. These models go into a sleep/standby mode when not in use.

As a result, this is the error message I get from the scheduled backups:

| 03:30:15 AM | Error | The automatic copy aborted because SuperDuper! could not locate the Destination volume named LITTLE

I ran a test scheduled backup this morning, and as the drive was mounted and I'd been using files on them - it ran fine.

Is there anyway I can wake the drive so that superduper can see the volume?

Or is this more an OS level script or an issue with the WD box? Worst case scenario - I reschedule the backups for an earlier time, but it'd be nice for it to be automatic.

Any ideas much appreciated.