David Forsyth:
At this point, I'd be happy to do an 8 track recording. For important
live recordings I would not use a laptop, but instead a decent desktop
with a RAID 0 array of at least 3 SATA2 disks for the audio files, with
the system on another disk.
I think that is complete overkill. I just tried recorded 128 channels of
32bit/44100hz at once, without problem. And my machine is 5 years old
2Gz barebone, using only a single PATA ide disk.
This was using jack_capture, and only recording silence (ie. non-connected
jack ports). Maybe the silence makes a difference.(?)
256 channels did not work very well though.