Apportioning storage units amongst storage sites in a dispersed storage network

A dispersed storage network (DSN) comprises:

• a plurality of storage sites;
• and
• a plurality of storage units, apportioned amongst the plurality of storage sites, wherein the plurality of storage units are apportioned by:
• generating storage unit apportioning data indicating a mapping of a plurality of desired numbers of storage units to a plurality of storage sites based on site reliability data, wherein the mapping includes a first desired number of storage units corresponding to a first one of the plurality of storage sites that is greater than a second desired number of storage units corresponding to a second one of the plurality of storage sites in response to the site reliability data indicating that a first reliability score corresponding to the first one of the plurality of storage sites is more favorable than a second reliability score corresponding to the second one of the plurality of storage sites;
• and
• allocating a plurality of storage units to the plurality of storage sites based on the storage unit apportioning data.