Re: AS/400e 170 IPL failure -- MIDRANGE-L

Roberto

Thanks for that background. It led me to a couple of documents (links
below) from which I learned the following:

My disk system is either RAID 5 or mirrored.
I have either one array or two.
I have either one ASP or two.
A RAID 5 array requires a minimum of four drives.

From memory (it's not in front of me right now) the drive in the

expansion chassis of "toast" box is a different type to those in the
main chassis. It seems unlikely to me that IBM would mix drive types
in a single array.

Given that the "working" box has four drives in the main chassis and
three in the expansion chassis, I'm inclined to suspect that what I
have in there is one complete RAID 5 array and one degraded RAID 5
array. Naturally, I'll need to fire it up to see if I can figure out
how confirm that, but I think that QSRV has the necessary privileges.
I'll also need to do some more reading - I'm not clear on how ASPs map
to arrays(or vice versa) and what redundancy arrangements are in
place.

In summary, my main hope for retrieving the keys from the "toast"
machine is that ASP1 may be found, complete, on the four drive array
in the primary chassis. I'm not ready to give up on that, yet, though
I'll concede the possibility that the reading mentioned above might
require me to.

Does that sound plausible?

On making my own media, it turns out that the 170s only have CD-ROM
drives, not CD-RWs. So, at best, I could only create tapes - if I had
some tapes. Unless there's a way of doing it remotely, from a PC over
TCP/IP - but that would be a separate discussion.

Robert

On Tue, Sep 27, 2016 at 6:38 PM, Roberto José Etcheverry Romero
<yggdrasil.raiker@xxxxxxxxx> wrote:

Robert,

Some background on how IBM i stores things, it uses an ASP (Auxiliary
Storage Pool), and within that (and technically, within the main storage
(RAM) as well) you have a one level storage. There are no volumes, no
partitions, no nothing. That means that unfortunately, if you have dead or
missing drives, the ASP is gone for good (unless you have a LOT of time and
expertise on your hands, i recall someone on this list reading the QSECOFR
password from the load source drive on a linux machine after a lot of
tinkering).
The second 170 i think will be a source of spares for the one that works.
If you can't find the media you might be able to create your own media,
look into that, if you have enough access to the system you might be able
to create iso images to reinstall the machine...

Best luck with that.

On Tue, Sep 27, 2016 at 7:37 PM, Robert <robert626001@xxxxxxxxx> wrote:

Thanks for the links, Rob.

It sounds like I need to bump into one of those people, in the pub
(physical or virtual). I guess I'd need to find the PTFs, too.

I'm now wondering (re the "toast" machine) whether it would be safe to
D from the LIC CD, get to DST, stop the array with missing drives and
power off. If I could do that without harming the current
installation, that might let me IPL and photographically recover the
keys for that machine too.

I'm a little hesitant, though as the last thing I want to do is
inadvertently erase the keys!

Robert

On Tue, Sep 27, 2016 at 5:02 PM, Rob Berendt <rob@xxxxxxxxx> wrote:

I know people who keep old copies of the OS on CD. Let's say for quick
upgrades in the event of mergers and acquisitions.

Rob Berendt
--
IBM Certified System Administrator - IBM i 6.1
Group Dekko
Dept 1600
Mail to: 2505 Dekko Drive
Garrett, IN 46738
Ship to: Dock 108
6928N 400E
Kendallville, IN 46755
http://www.dekko.com

From: Roberto José Etcheverry Romero <yggdrasil.raiker@xxxxxxxxx>
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Date: 09/27/2016 05:53 PM
Subject: Re: AS/400e 170 IPL failure
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>

If you have the keys photographed but you don't have any other access to
the system. Try to find some v5r2 installation media and just break the
entire machine. Install from 0 and you'll have a v5r2 machine up and
running. It's a nice learning experience, but if you don't have the media
it'll be difficult.

Best Regards,

Roberto

On Tue, Sep 27, 2016 at 6:42 PM, James H. H. Lampert <
jamesl@xxxxxxxxxxxxxxxxx> wrote:

Sounds to me like what you really have is one functioning 170, and one
source of spare 170 parts.

Which, if you think about it, is not a bad combination.

--
JHHL

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