i have win 2011 home server,i allso have 3 computers.i ran back up on the 2 with no issue the 3rd my primary can not back up.it starts and then stops.get a message back up did not run successfully .it does have quite a bit of data.i am guessing that i do not have enough memory to run the back up.but before i start adding additional memory i need to know that is the case.windows forum did not offer any assistance,nor tech support.not much info on this product,shame since it is a window product.any advice or assistance ,thank you vanniko63