I have a WD external drive which I use for backups, I have always disconnected it when it is not in use but I would like to leave it connected so that I can schedule backups using Acronis. Is there any real problem with this? from the reading WD seem to be saying that it is no problem.
I have two such external drives, one for backups the other for games. They are both permanently on when the computer is on! My tip - switch the drives on first, then the computer. Not had any problems with them, after several years use.