Please go the link below and input your Serial number. What is the model number of the unit? If you have the new My Book you might be able to turn off the sleep mode.
I could not follow the link you provided, it appeared to have some session specific information in it. Perhaps you could cut and paste the important part of the document please?
If you have the new drive (which includes smart ware)  you can set the sleep timer and if you don’t have smart ware then install WD Drive manager, this will keep a track of the drive all time and will never let the drive sleep.
The Drive manager doesn’t work on Windows 7 apparently. I have all the software that came with the drive, should I try the smart ware (or whatever it is)?
i have the same problem, and it is very very very frustrating. this program writes something to the drive in intervals that you choose. i haven’t used it for very long, so i can’t guarantee that it works. hopefully it does.
I have been working on it for two weeks but I could not a find any way to disable the sleep mode of “my book studio 1TB” (via esata) finally I see that this drive only made for storage, not for edit & design jobs which have coffee breaks.
Just want to add a frustrated rant about this drive. I am so sick of this thing sleeping every 15-30 minutes. If it ever goes into sleep mode, the fastest way to get access to my files is to power cycle it. Otherwise it just makes windows think the file explorer is not responding for 10 minutes until the drive actually wakes up. I’m never buying WD again.