[Info-vax] Shadow System Disk between two Hosts

Bob Koehler koehler at eisner.nospam.encompasserve.org
Tue May 15 10:09:56 EDT 2012


In article<joss11$448$1 at news.belwue.de>,gartmann at nonsense.immunbio.mpg.de wrote:
> Hello,
>
> according to the manuals it should be possible to shadow a system disk
between
> two nodes. I have to Itanium boxes, connected via ethernet and forming
a
> cluster under OpenVMS 8.4. Currently each has its own system disk. Is
it
> possible to have these disks form a shadow set and still have each
node boot
> from a single member of this disk?

   If you mean node A boots from disk X, node B boots from disk Y, and
   then X and Y form a shadow set, I think not.

   You'ld have to get node B to boot from served disk X, then form the
   shadow set with X and Y.  There's no provision to merge the different
   changes that would happen to X and Y if you booted A from X and B from 
   Y.  You have to get A and B to make their boot time changes on X, then 
   merge in Y.





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