Asymmetric disk size for couchbase

We want to use the couchbase for aymmetric disk size
docs: 1M
size of all docs: 100GB
3 CBS nodes, and disk size below
node1 : 10GB
node2: 40GB
node3 : 70GB
can we use these configuration ?

You can use them, but you’ll essentially end up using the lowest common denominator node’s resources - i.e. you won;t be able to use more than 10GB on all nodes.

This is because Couchbase expects homogeneous nodes, as it allocates the same fraction of data (VBuckets) to all cluster nodes.