Re: Online Storage
External drive is okay but you may want to have 2 in RAID-1 configuration at least. Hard drives die all the time, at home, you tend to leave them in some corner or move them around so I would use minimum 2 hard drives. You can buy 2-Bay enclosures with RAID1 option.
RAID1 is basically 2 drives *mirroring *each other so if one dies, you still have your data on the other.