To test your disk heartbeats, you can look at the output of “cllsif” or “lssrc -ls topsvcs”, or you can actively test them. IBM provides a command to do this. First, find the devices associated with the disk HB VG, I’ll assume hdisk4 on nodeA and hdisk5 on nodeB.
Run this on nodeA first:
/usr/sbin/rsct/bin/dhb_read -p hdisk4 -r
Then run this on NodeB:
/usr/sbin/rsct/bin/dhb_read -p hdisk5 -t
Both sides should generate some output followed by “Link operating normally”.