Hello all. I thought I'd chime in on my method of workflow.
Day of event:
Sync camera times.
Shoot event; delete trash photos on the fly when possible.
At event upload into Aperture on Macbook Pro and on to two Western Digital 1TB portable hard drives. (3 copies of raw images at this point.) If possible upload every 75-100 images.
Delete card. (Usually I won't unless absolutely necessary. I do not count this as a copy of the images.)
Export from Aperture the event on to two more Western Digital 2TB hard drives. (5 copies of raw images now.)
Edit in Aperture basic tweaks.
Export onto the last two 2TB drives and delete the raw images on one drive only. That way only the keepers are one of drives and then the second drive has both raw and keepers.
Edit in Photoshop CS4.
Again refresh the two 2TB drives.
Burn 4 separate DVDs. Here are where they go. 1-On site copy. 2-Client copy. 3-Off site copy (safe deposit box at bank) 4-On site safe.
Upload keeper images onto Windows Skydrive (free). 1 account is always for my business. Then make an account with password to give client for immediate viewing and download once payment is delivered.
Delete raw images from the first two 1TB portable drives and delete CF cards if not already done.
Delete project from Macbook Pro.