Patent ID: 11232128

Abstract:
A first storage system is configured to participate in a replication process with a second storage system using an active-active configuration. A request for a time-to-live (TTL) grant is received in the first storage system from the second storage system. A TTL projection time maintained in the first storage system is updated as a function of a current value of the TTL projection time, a local time in the first storage system and a TTL grant value. The TTL grant with the TTL grant value is sent from the first storage system to the second storage system in response to the request. The TTL projection time maintained in the first storage system is utilized in conjunction with revocation of the TTL grant to the second storage system. The TTL projection time illustratively specifies a time after which it is guaranteed that the TTL grant sent by the first storage system to the second storage system will have expired in accordance with a TTL expiration time maintained in the second storage system.