The Question is:
Both systems can see to the common system disk.
Why can we boot only one system ?
The secondary system hangs just after to have accessed the quorum disk
The Answer is :
Your VOTES and EXPECTED_VOTES and other quorum-related settings may
be set incorrectly, or potentially your quorum-related values are set
correctly and are (correctly) preventing two systems from bootstrapping
from the same system root. You could have a configuration where hosts
cannot connect to each other via LAN or CI or other supported cluster
communications interconnect -- this is the actual underlying behaviour
when two systems are correctly configured with VOTES and EXPECTED_VOTES
and that (incorrectly) bootstrap from the same system root on the same
system disk. Other variations of configuration problems do exist, of
course, as do many and various potential hardware errors.
You could also have incorrect settings for the allocation classes, if
MSCP-based storage controllers and satellite bootstraps are in use.
Please see the OpenVMS FAQ for details on correctly configuring the
quorum-related settings, and particularly around configuring VOTES
and EXPECTED_VOTES and the quorum disk.
Please see the OpenVMS Cluster manual for configuration and