Create a correct backing up workflow

I would like to create a workflow so I can better learn what I am doing right wrong, what changes need to be made. i have a old set up here it is

1.17' Laptop running Vista, 320 gig hd, photoshop elements 10 . ( it is, what it is. waiting for $$$)
2. a portable 2TB HD (western Digital)
3. 3TB Hard Drive ( western Digital) that is network connected at home that have basic folders ,My Pic , My music, My video, basic setup
4. Canon T2I shooting Raw w/ 32G SD cards

I would like some help on how to set up a work flow using all these the correct way. I want to be able to back up and save photos pre take and post editing, and able to find what im looking for in the future , at the house or if out on the road.

The other part does anyone know how to set up backs up to folders when sonething changes (say edit a pic) or add new pic with out having to copy and paste all pictures
thanks any input will help

My workflow here, backup down a bit. Beware mirroring, if your main hard drive corrupts your mirror will corrupt too.

I thought I would provide my workflow and maybe it would give you some ideas. I'm on a Mac so it'll be slightly different.

I store all my photos on one external hard drive, create a backup copy on a second external hard drive plus backup to the cloud using CrashPlan.

1. Import photos into Lightroom. This copies them from the card to the first hard drive.
2. Choose to create a backup copy to the second hard drive during the import process.
3. Backup Lightroom catalog weekly to the second hard drive.
4. Backup up all files (original photo location, backup photo location, Lightroom catalog and all backup versions of the Lightroom catalog) to the cloud using CrashPlan.

My workflow:

1. Import RAW photos into LR database (into its Catalog), with actual files in a separate (from LR) folder holding photos taken in current year.
2. Edit RAW files (LR stores the 'edit recipe' in its Catalog); ouput JPG (which I treat as 'throwaway' files)
3. Let LR make its backup catalog file whenever it wants
4. Copy the LR Catalog file to an external USB HD periodically; keep copies of LR backup catalog files on an external USB HD as well.
5. At end of each year move RAW files from #1internal HD to a network-connected HD.
6. Make copy of RAW files from #5 into an external USB HD (as second copy of RAW).
7. Windows 7 is set up to make Backups of #1 files into another external USB HD RAID1 unit (volume mirroring on 2 drives)

#3 and #4 give me two copies of the LR Catalog (and backups) so that I minimize danger of losing edits to RAW files.
#5 and #6 give me two copies of actual RAW files.
#7 gives me three total copies of RAW files while files are active (in current year)