Managing storage identifiers in a pool is facilitated by providing a hashing-based management protocol in association with a stack which accommodates storage identifiers of the pool. The hashing-based management protocol includes: based on a request, popping a storage identifier from the stack without evaluating for update of a hash link associated with the stack, potentially allowing the hash link to become inconsistent with storage identifiers remaining in the stack; and based on return of a freed storage identifier to the stack, hashing the freed storage identifier and identifying whether there is an inconsistency in the hash link related to return of the freed storage identifier, and based on identifying the inconsistency, one of updating the hash link to remove the inconsistency, or indicating, where ascertained, that the freed storage identifier is a duplicate storage identifier.