Whether you accept the recommended pool configuration depends on a few factors.
Determine the type of storage that is best for your requirements by answering the following questions:
Do you prefer multiple pools of smaller capacities, rather than the largest pools possible?
Do you prefer RAID volume groups over pools?
Do you prefer to manually provision your drives, rather than having a configuration recommended for you?
If you answered Yes to any of these questions, consider rejecting the recommended pool configuration.