You can use the for_each meta-argument to create multiple volumes.

Example

To create 3 different volumes use the following configuration:

resource "powerflex_volume" "volume_example" {
  for_each = toset( ["Volume1", "Volume2", "Volume3"] )
  name = each.key
  protection_domain_name = "domain1"
  storage_pool_name = "pool1"
  size          = 8
  capacity_unit = "GB"
}