What's the difference between a pdisk and hdisk
OK. pdisks are a function of SSA arrays. You see, with SSA, you get
*another* level of abstraction before you ever get to the LVM. The
pdisks are the actual, real SSA disks, which the SSA array then uses to
construct virtual hdisks. The hdisks then become the "physical volumes"
that make up the LVM's volume groups, are the partitioned to provide
the logical volumes. lscfg should show you "hdisk"s that are "SSA Logical
Disk Drive"s. These are the virtual hdisks created by the SSA controllers.
Your SSA utilities can tell you how your pdisks map to your hdisks;
consult your SSA manuals for more information.