yes you are correct - that is why I asked yesterday what you meant with open - for both disks you get output - so the disks are open - so correctly zoned and readable/writable.
if you do this on ASM disks or gpfs disks you are wiping the header. The device will stay up til your next reboot and be beautiful and clean after the reboot so this is a terrible idea.
please try these two commands - if you get an error the disk is closed, if you get any content, the disk is open / readable
readvgda /dev/hdiskX
and
lqueryvg -At -p hdisk0