I have to move a MongoDB Collection (Size: 1TB+) from Sharded MongoDB Cluster to another[5 shards on both clusters]. During this operation, it is assumed that the accompanying program will be offline, so no need to worry about inconsistent data, but I need to minimize the downtime.
I've tried testing it with mongodump and mongorestore, but looks like that is taking ages to finish.
Please share your experiences for such kind of scenarios.
Note: Cluster has only one collection, so I am open at cluster level sync as well.