VAXstation 3100/76 SCSI disk over 1GB

[Paul Thompson]

On Fri, 22 Apr 2005, Ethan Dicks wrote:

> I have not owned a 3100, so anyone who knows more feel free to chime
> in, but as I understand it, one should put a 1GB disk as DUA0: on a
> 3100, but one may put larger disks on as data disks, since VMS will
> not attempt to write to them when it's going down hard.
>

My understanding is that you can use over 1GB for system if critical files 
needed during boot end up below the 1GB limit so that the firmware can 
address them.  You will also need to turn off crash dumps with the 
appropriate sysgen parameter or always be sure your SYSDUMP.DMP or 
PAGEFILE.SYS that you dump to maps completely under 1GB.

Probably most folks running a VAX aren't planning to log a support call 
for their crash dumps anyway....

I've had a 9 and 18 GB disk on my 3100 and once VMS is running all is 
fine.