Re: boot from SSA-disks?

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Date:         Fri, 28 Nov 2003 11:07:02 +0100
To: aix-l@Princeton.EDU

What you're proposing could be a bit tricky.

You can't import rootvg. However, if the disks are attached to the system
you could boot from them. You'd probably have to go through the SMS menus
to do it, though.

You might then have difficulties unless the configurations of your two
machines are very similar: same hardware, adapters in the same slots, same
microcode and firmware levels.

A better alternative might be to make sure that all of your application is
on external disks - SSA, I assume - available to both systems. Keep both
boxes at the same level of AIX and make sure that any script libraries etc
are kept in sync. Make sure all your user stuff - /etc/passwd,
/etc/security/passwd etc is the same. Then, if the first box fails you can
import the volume group(s) in the second box, change the hostname and
network configuration and start your application. Even then there is scope
for problems, depending on what normally runs on the second server.
However, it should ultimately be less disruptive and quicker than trying to
re-boot from a different set of disks.

Simon Green
Altria ITSC Europe Ltd

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> -----Original Message-----
> From: fmu@OERAG.DE [mailto:fmu@OERAG.DE]
> Sent: 27 November 2003 16:55
> To: aix-l@Princeton.EDU
> Subject: boot from SSA-disks?
>
>
> Hi *,
>
> I have a question concerning configure rootvg. Is it possible
> to install
> the AIX on SSA-disks and boot from this?
>
> The background of my question is the following:
> I want a backup-system for our DB2-database-server (without
> HACMP). So I
> think, that I install a second AIX node, connect this on the
> SSA-loop from
> the first one. When the produktion node crashs, I want to
> start an importvg
> rootvg on the backup node and boot this from this SSA-disks.
> Start the db2
> and the clients can connect to the backupserver with the same
> hostname as
> the (crash-) first node.

• Previous message: Holger.VanKoll_at_SWISSCOM.COM: "Re: boot from SSA-disks?"
• Maybe in reply to: fmu_at_OERAG.DE: "boot from SSA-disks?"
• Next in thread: Hans-Dieter Kutz: "Re: boot from SSA-disks?"
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