This OID reports the number of cells within this partition that are currently in a state ready for dynamic reconfiguration, returning zero if the value cannot be determined. An admin planning a hot-add or hot-remove operation across multiple cells checks this count to confirm how many cells in the partition can actually participate in the reconfiguration right now. For example, if a partition has four cells but this OID reports only one ready for reconfiguration, the admin knows the other three need additional preparation before they can be safely reconfigured.