A great replacement for my earlier setup of 2 NAS Dual Bays. I was specifically looking for something with 4 cores and at least 2GB RAM (this has 4GB but I also purchased an additional 4GB to bring it to 8GB - and it was very easy to install). The set up and installation could not have been simpler and the drives 'clip' into the cradles and easily slide into the unit. If you are looking to create a RAID or use other than single drives in the unit, it pays to have them all plugged into the device when you initialize it.. As with most NAS devices I have worked with, any new drive requires to be formatted by the unit - destroying all data.. ...view more