would like to seek some advices on long journey storage of photos.

Am planning to go on a 2 month trip. Will be shooting in RAW at 6mp. So, memory cards are just not sufficient. Am planning to shoot bout 140GB of pic. Am planning to get a digimate3 and a 2.5" hdd.

For digimate3, are there any specific requirement of the HDD that it can support?

Tech gurus, is it advisiable to hunt down in the coming PC show for HDD or should I visit simlim instead.

Any advices are greatly appreciated.