**To fail over a shard** The following `failover-shard`` fails over a shard. :: aws memorydb failover-shard \ --cluster-name my-cluster --shard-name 0001 Output:: { "Cluster": { "Name": "my-cluster", "Status": "available", "NumberOfShards": 2, "ClusterEndpoint": { "Address": "clustercfg.my-cluster.xxxxxx.memorydb.us-east-1.amazonaws.com", "Port": 6379 }, "NodeType": "db.r6g.large", "EngineVersion": "6.2", "EnginePatchVersion": "6.2.6", "ParameterGroupName": "default.memorydb-redis6", "ParameterGroupStatus": "in-sync", "SecurityGroups": [ { "SecurityGroupId": "sg-0a143xxxx45c9fae", "Status": "active" } ], "SubnetGroupName": "my-sg", "TLSEnabled": true, "ARN": "arn:aws:memorydb:us-east-1:491658xxxxxx:cluster/my-cluster", "SnapshotRetentionLimit": 0, "MaintenanceWindow": "wed:03:00-wed:04:00", "SnapshotWindow": "04:30-05:30", "AutoMinorVersionUpgrade": true } } For more information, see `Minimizing downtime with MultiAZ <https://docs.aws.amazon.com/memorydb/latest/devguide/autofailover.html>`__ in the *MemoryDB User Guide*.