I think occassionally we need to be reminded of how important it is to back up our data, as well as keeping it organized. Technology changes quickly, and therefore I believe that this is something that should be touched on regularly.
Every setup and situation will find different backup/organizational methods to work best. Share how you have things set up to help those that may be trying to figure it out, or are unhappy with their current setup.
I am using an internal 120 gig drive to store images on, this is my "on-line" drive because it is always ready. Once a week I back up to an external 250 gig drive and shut it down after the backup completes to prevent user error/virus damage. Right now I have 45 gigs of images, roughly 20% of my external backup. This is after a little over a year of shooting, so space shouldn't be an issue for a while, even if taking into account an increase in images shot.
For organizing the images I use Adobe Photoshop Album 2. I like its method of referencing the images most compatible with my visual way of working. I am currntly evaluating ACDSee 6, it has similar database functions as Album, but much faster image browsing and a really cool renaming utility. Its "Find Duplicates" function also made consolidating images from three different computers a simple, if time-consuming, task. The problems I have with ACDSee are that it still doesn't suppot NEF files and some minor gripes about the picture bin.
I am currently using ZoomBrowser's download utility to transfer images to my computer because it's the only program I have that downloads the images into folders named by shooting date, not by download date. I prefer that to the other programs that I have. If there is a way to do that with ACDSee or Album, it eludes me. Having them in folders by shoot date gives me an alternate method of finding images not dependant on software. Sort of a plan B.
I also use a mirrored RAID array in my on-site machine to keep us up and running in the event of a hardware failure while on location. Cheap insurance against having to pack up and go home if the hard drive craps out.
I use an external 20gb drive/MP3 player to move large stores of images between computers. When on the road I use it to play music as well as store images in case my laptop were stolen or damaged.
The key is redundancy, have it stored in more than one location in case of hardware failure. And hardware WILL fail.
Sometimes it seems like the real work begins once the picture has been taken...