Figure 66 shows a disk layout optimized for performance. This disk layout uses the following strategies to improve performance:
This strategy separates the logical log and the physical log and reduces contention for the root dbspace.
Neither of these disks stores the logical log or the physical log. Ideally you could store each of the items and orders tables on a separate high-performance disk. However, in the present scenario, this strategy is not possible because one of the high-performance disks is needed to store the very large cust_calls table (the other two disks are too small for this task).