Bobby

So i am new to stablebit, upgrading from WHS v1 with drive extender (of course) to WHS 2012 essentials R2. I have had 2.7 TB worth of storage space on WHS V1 and another 1.4TB worth of storage still free (on v1 pIE CHART) for about a month now and did a final backup of all folders on it, then upgraded to essentials yesterday, Installed stablebit and created a drive with all 4 hard drives ( so it equaled out to basically the same size DATA drive)and I have the same hard drives and the same size folders as I had when I did my final backup off V1 and just copied and pasted to essentials and I am out of storage paste half way through the pasting procedure with it only making 4x copies of Folder duplication. ???? Am i lost on a setting that I didnt apply or is this right.??? - I assumed that V1 copied to all 4 hard drives ( so 4 copy's) of files on each hard drive so I applied that to drivepool. Am I wrong? I see that it copy's everything to each hard drive, but 1 hard drive on the pool is smaller than the others. so when it fills obviously before the others it gives me a message saying hard drive full, duplication cannot happen on files and it shows me the list. How come this didnt happen on V1. Thanks Bobby