Well you COULD if you set them up in RAID0. According to what Sam says each HDD has 70MPS writing capability. Theoretically having two HDDs in RAID0 will up that to 140. Combined that with gigabit LAN you should see speed improvements.
I messed up a LITTLE bit lol. RAID0 WILL improve performance, but yes you will see the ntire 300GB. My bad.
Yes, by making 2 disks into one logical disk you have doubled your I/O. You can get 500 SATA with about 150 meg/sec I/O for about 100 USD. What is your gigabit LAN?
Ah, thanks. It was confusing me seeing the Gbps thinking "how can it possibly be GigaBytes per second!"