Originally Posted by Daryl Greene
I always heard that breaking a large drive up made accessing information stay at a faster rate. Sounds hokey to me, but who knows?
There is, at least in theory, a real performance boost based on the fact that the reading head won't have to travel that far between the endpoints of the partition, thus somewhat reducing the read/write times.
The actual performance boost depends on two factors:
1) How much data fragmentation is there?
The performance boost compared to a bigger partition is somewhat proportional to the level of fragmentation. With frequent (weekly or more often) defragmentation runs this shouldn't be a problem in the first place.
2) How often does the head have to switch between partitions?
If it has to constantly alternate between partitions the result might be reduced rather than increased performance.