For example, the B2-3 base configuration PDomain contains three LDoms, but the number of EMS modules and hard disk drives that are available for each LDom in that configuration varies, as described in B2-3 LDom Configuration.
If you want additional storage for an LDom, you might chose either LDom 1 in the B2-3 configuration PDomain or a different configuration PDomain altogether that offers even larger LDoms. For example, you might find that an extended configuration PDomain works best, where certain LDoms span across two DCUs and therefore would have EMS modules and hard drives from both DCUs available for that LDom.
As an example, consider the E2-3 extended configuration PDomain, as described in E2-3 LDom Configuration, which contains three LDoms, like the B2-3 base configuration PDomain. The number of EMS modules and hard drives for the second and third LDoms are similar to those of the B2-3 base configuration PDomain. However, the number of EMS modules and hard drives for the first LDom is considerably larger in the E2-3 extended configuration PDomain compared to the B2-3 base configuration PDomain.
The following table shows the number of EMSs and the number of free hard drives that are available for the LDoms in each of those configuration PDomains (note that all LDoms will always have at least two hard drives configured as a mirrored pair holding the root, swap, dump and /u01 directories).