You can view disk ownership to determine which node controls the storage. You can also view the partition ownership on systems that use shared disks.
cluster::> storage disk show -ownership Disk Aggregate Home Owner DR Home Home ID Owner ID DR Home ID Reserver Pool -------- --------- -------- -------- -------- ---------- ----------- ----------- ----------- ------ 1.0.0 aggr0_2 node2 node2 - 2014941509 2014941509 - 2014941509 Pool0 1.0.1 aggr0_2 node2 node2 - 2014941509 2014941509 - 2014941509 Pool0 1.0.2 aggr0_1 node1 node1 - 2014941219 2014941219 - 2014941219 Pool0 1.0.3 - node1 node1 - 2014941219 2014941219 - 2014941219 Pool0 ...
cluster::> storage disk show -partition-ownership Root Data Container Container Disk Aggregate Root Owner Owner ID Data Owner Owner ID Owner Owner ID -------- --------- ----------- ----------- ----------- ----------- ---------- ----------- 1.0.0 - node1 1886742616 node1 1886742616 node1 1886742616 1.0.1 - node1 1886742616 node1 1886742616 node1 1886742616 1.0.2 - node2 1886742657 node2 1886742657 node2 1886742657 1.0.3 - node2 1886742657 node2 1886742657 node2 1886742657 ...