This is the relative name (Rn) - the final segment of the qualifier's DN - that distinguishes this particular match-criterion object from its siblings under the same server pool qualification policy. Since a qualification policy can stack multiple criteria types (CPU, memory, storage, adapter), the Rn tells an admin at a glance which kind of qualifier this row is without having to parse the whole DN. For a qualifier restricting pool membership to servers with a specific adapter, the Rn might read simply adaptorqual.