Hellsbrink, that looks spot on! I wouldn't mind one myself - if I had the money!
pba_target, a word of warning - be VERY VERY careful about deleting files from a NAS.
For most SOHO NAS devices, user-deleted files will NOT be in a "wastebin" or recycler. They are gone. Period. Unless you go for professional data recovery.
There's a lot of good things about a NAS with RAID 1 or higher enabled. However, there are also lots of ways for a NAS to fail - both through mechanical failure and user error - with data loss the result. Do NOT regard it as an alternative to regular backups. Higher availability and convenience, yes.
SD