What is the allocation size and unit used by Hitachi Dynamic Provisioning on a VSP?

Which command can be used to provision storage on a VSP?

A customer has migrated some basic LDEVs to DP-Vols from a new DP Pool. After discarding zero data, these V-Vols finally appear to only use 50% of the DP Pool pages. With a VSP, what could be done to improve the page usage rate of this DP Pool?

What are two features of Hitachi Dynamic Link Manager (HDLM)? (Choose two.)

A customer wants to use Hitachi Dynamic Tiering on a VSP. What is required before using the product?