Bowie Bailey wrote: > Rainer Duffner wrote: > >> So you need 1-2 TB. >> > > ummm....not quite. > > 4 x 300GB in raid 1+0 = 600GB > 2 x 500GB in raid 1 = 500GB > > So, 500-600 GB. > vendors tend to quote the raw drive capacity as thats what costs money, not the usable space in a given raid configuration.