Slowly working on a cluster design, and I think I'm going to start with VAX machines.
One of the nodes is going to be a VAXstation, and that brings up an interesting quandary regarding the quorum disk. Per DEC, the use of a quorum disk is recommended for 2-node clusters to reduce the chance of the cluster failing (i.e. one of the nodes could go down and the second node+quorum disk could still function as a cluster). Given that VAXen cannot cluster storage over SCSI, and VAXstations have only SCSI disk interfaces, it would seem that the quorum drive would offer only minimal protection (if the box that holds the quorum drive goes down, then the drive is inaccessible over the network via MSCP and therefore you have node+quorum disk down and the cluster breaks). Given that this makes the probability that a system crash will bring down the cluster 50% (and this cluster does not require high-availability). I'm thinking about dispensing with the quorum disk, but wanted to check first.
I suppose the answer is to cluster over Alpha with a shared SCSI quorum disk, but it looks like the DEC3000 built-in SCSI HA isn't supported .
malmberg December 12 2017 HPE only makes the most current version of OpenVMS Alpha / IA64 /VAX available to hobbyists. When I had access to the Alliance 1 program it was the same. No public downloads are allowed by HPE.
nmbonao December 08 2017 Is anybody knows OpenVMS 8.2 version downloadable version? or CD copy? Thank you very much
aarommes December 02 2017 Bitcoin and Blockchain enthusiasts ( plus distributed computing ) please connec / reply: http://www.openvmshobbyis t.com/forum/viewthread.ph p?forum_id=130&thread_id= 2991
malmberg September 10 2017 https://sourceforge.net/p /vms-ports/wiki/VMSInstal lation/ For the most part just use VMS 6.1 media instead of 7.3. But why run the older release?
DoeveR August 07 2017 Where can I find the write up on running VMS 6.1 using the simh emulator?
Bart March 20 2017 Happy to have found my password again!