Re: Shadowed System disk questions

In article <1d45e$443c4868$50db5015$23147@xxxxxxxxxxxxxxx>, Paul Sture
<paul.sture.nospam@xxxxxxxxxx> writes:

Note that you cannot dismount one member of a shadow set on a live
system and expect to get a clean copy.

Then why have you gone to the trouble to move SYSUAF etc off your system
disk?

Mainly so that I have to maintain just one set of these files.

Those files at the very minimum will be safe. What else of
importance is left? Obviously you need to know your own system to answer
this one.

Right. You might be right that any other open files will probably not
be opened for write, and that things might be OK. But it still isn't
officially supported.

You can also close applications by running manually closing batch queues
and running SYSHUTDWN.COM to ensure they aren't using the system disk.

True, but if I have to shut down everything, it's not that much more
trouble to completely shut down the node and reboot.

You need to shut down the
system, physically disconnect a member, and bring it back up with one
less member.

No way, except under exceptional circumstances. Rebooting with
SHADOW_SYS_DISK=0 suffices. Why much with hardware when you don't need
to? Anyway, the disk farm could be many miles away.

That will work, of course, if you set SHADOW_SYS_DISK=0 first. However,
it's not a dynamic parameter, so a reboot is needed. Also, one has to
be careful not to mount the backup member back in by mistake.

.

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