HP OpenVMS Systems

Using a quorum disk?

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The Question is:

 
Hi,
 
I have a two-node VMScluster with a shared
storage interconnect.
I'd like to know whether using the system disk
as quorum disk is good or whether it is better
to use a different disk.
 
Thank you
 
 

The Answer is :

  It depends!
 
  The advantage of using a quorum disk is that you can shutdown one node
  without hanging the other. If this is not a requirement then you do not
  need a quorum disk. If you do want to be able to run a single node, then
  you REQUIRE a quorum disk.
 
  It doesn't make much difference whether you choose the system disk or
  another disk on the shared interconnect, except that the quorum disk
  cannot be (host based) shadowed. So if you want to shadow your system
  disk, you must choose a non-system disk for quorum, or use controller
  based shadowing.
 
  An alternative to a quorum disk is a "quorum node". Use a small VAX with
  bare minimum OpenVMS on it, no networking software, disk serving or
  logins, just contribute some votes to the cluster.

  

     

     
answer written or last revised on ( 25-FEB-1999 )
     
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