I usually use a separate hard drive for data storage. It is primarily for back up on my Ice Pack system, but I can also mount to it under Knoppix/PHLAK to retrieve or save data.
At what memory level have you guys tested PHLAK? I ran it on a P4 1.3 w/ 1024 MB RAM and a P3 600 w/ 128 MB RAM. Both ran very smooth, would it bog down on a 233 w/ 64?