I'm thinking of buying a Synology NAS. I'm a photographer and all my (huge) RAW files are on three external HD's. I'm running out of space and want the security of extra back-ups. Anyway. I'm used to having to be able to see those HD's on my desktop and ad/delete and work from them. Will that be as easy and straightforward with the NAS? Or do I have to use their software to acces my stuff? Thanks!