This disables a single path through one HBA to a disk in IBM AIX. This instructs the system to start using an alternative path to the disk.
# chpath -l hdisk# -p fscsi# -s disable
Example:
chpath -l hdisk# -p fscsi# -s disable
# chpath -l hdisk# -p fscsi# -s disable
Example:
chpath -l hdisk# -p fscsi# -s disable