[Info-vax] Idiots Guide To Clustering

[H Vlems]

On 17 mrt, 17:36, moro... at world.std.spaamtrap.com (Michael Moroney)
wrote:
> H Vlems <hvl... at freenet.de> writes:
> >Basically what happens is that a few parameters in sys
> >$system:modparams.dat are set correctly.
> >ALLOCLASS : each cluster member in a VAX NI cluster must have a unique
> >and non-zero value
>
> ALLOCLASS does not need to be nonzero.  A zero ALLOCLASS will change
> how a member's disks are named in the cluster.  They will be node$ddnu
> rather than $m$ddnu.  It was the norm during the time when local area
> vaxclusters with many nonvoting satellites to have the satellites use
> alloclass 0.
>
> You want ALLOCLASS nonzero for any node serving shared storage, but I
> don't remember if that's even necessary with port allocation classes
> for shared SCSI.

Correct, but one might be tempted to set up a shadowset across the LAN.