I did it many times, but because of this conversation, I have tried it once again:
WD6401AALS drive, Opensuse 11.1 64bit, Ext3 filesystem:
- 3 simultanous instances of tar+gzip compression +/- 11GB of files each.
- copying large amount of files
- playing video in SMPLayer
- seaching file on the disk
No problem at all. System does not hang up, video is smooth, all of these task proceed and i can do more and more.
In my experience, trying this with Baracuda 7200.11 640GB resulted in to slower environment, occasionally hanging up, and tasks completed noticeably later. I don't have any Barracuda here, to make some comparison once again. That's why I'm asking and collecting information. I don't understand, what's your problem with it.