My recommendation - even to 'not too serious' photographers is to always keep a copy of at least your very favourite photos on an external HDD in a location away from one's home - so if your home is burgled or the immediate area where you live (eg suburb) is destroyed by any event - such as: fire, tornado, earthquake, etc - you should still have your very favourite photos safe in that other location. For photographers where photos are their work and income, this is a no-brainer- do it!
I use LaCie Rugged 1 TB drives for backup, the FW800 is quite speedy (a lot better than USB2). I have a pair of them for complete clones and another pair for just RAW images and also video, and I keep one set at home and another set at work. Every 2-3 months, I burn the recent files to a DL-DVD and store that in a safety deposit box (in a bank that's in a town separate from where I live and the city where I work). I write RAW files to two cards. So, right when the image is captured, I have duplicate copies. After processing, the images are on my laptop and on four external drives in two locations, and eventually there will be 5 copies in two locations.
The separate HDDs for images/video are planning ahead for the time when my laptop drive isn't big enough to store all my RAW files (although I deferred that time significantly last week when I replaced my internal 500 GB HDD with a 960 GB SSD). If/when I get to that point, I can delete a year at a time from the internal SSD, and thus those will be deleted from the clones, too. BUt I'll still have 3 copies in three different locations.
Overkill? Maybe. But maybe I should add Mozy or Carbonite, too?
On a slightly OT version of this...
I'm running quickly out of hardrive space on my late 2011 macbookpro. I need somehow to get external HD space I can hook into this to do PS, Aperture 3, Premier, FCPX work on...so I can free up my main harddrive.
My MBP only has Firewire 800, Thunderbolt and USB2 as hookup options.
I was looking at the Lacie 2-3TB external harddrives, to use the Firewire connection...would this be fast enough to house my working files that I'm processing?
USB2 would be too slow I think...and I don't think thunderbolt would be an option since I'm having to use thunderbolt to display port adapter to run my Dell U2711 monitor and get full resolution out of it...I dunno if that would work daisy chaining....
Thanks in advance,