[Info-vax] Reconfiguring VMS 6.2 - Shadow set question

[Jan-Erik Soderholm]

JF Mezei wrote 2012-10-23 07:24:
> On 12-10-23 00:57, supervinx wrote:
>
>> I ask a practical question: since system disk shadowing seems to happen
>> before any startup com file is executed, may I safely remove the
>> MOUNT /shadow... command DSA0: related ?
>
> yes.
>
> Early in boot, the shadow set is created with just one physical disk.

It is created with whatever disks in the system shadow set that
are available. Usualy at least two disks.

> In your procedure, the mount command was designed to add an extra disk
> to it.
>

As has been described in earlier posts, that is only done
manualy once when you form the system shadow set the first time.
And that can very well be done "by hand" from DCL.

> Since you no longer need/ant to add a second disk to that system disk
> shadow set, you can remove the mount command.

Wrong. It can be removed since it is not needed after the
initial creation of the system shadow set. That command was
never needed there in the first place.

> (or just comment it out
> because if you decide to add a disk to the system again later, you'll
> know how to make a 2 disk shadow set)
>

At that time, just issue a MOUNT command by hand once and you're set.
The (system) disks themself "remembers" the shadowing setup.

Jan-Erik.