This is the rn (Relative Name), the single naming segment that, appended to its parent's dn, forms the full dn for this one instance of the record of this domain's identity-database sync state, tracking whether this fabric interconnect's copy of the shared system identity information currently matches its peer's. UCS Manager derives this segment automatically from the object's own defining attribute (such as an address, index, or configured name), so seeing a distinctive rn like this is how you tell one SysInfo row apart from every sibling row under the same parent. For this class the rn typically looks like 'ident-sysinfo'.