RE: Migrating extant system to new hardware -- MIDRANGE-L

Jack,

While there is a difference between the two, it's not enough to worry about
at this point.

What you really need is a compatible tape you can use between the two
systems.

That will most likely be an LTO of some sort. (LTO4 to avoid compatibility
issues).

Steps:
Put an interface card (SAS or match what's in the new P8) into the source
machine (P6?)
Attach tape and run backup on P6
Send the tape device and tape to the new box (assuming no additional tape
there)
Use the Alternate IPL device to boot into LIC, and start to restore the
system.

--
Jim Oberholtzer
Agile Technology Architects

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jack
Woehr
Sent: Wednesday, December 20, 2017 11:38 AM
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>
Subject: Re: Migrating extant system to new hardware

Again: "alternate IPL device" vs "alternate installation device".
Would that make a difference?

My head hurtz ... :)

On Wed, Dec 20, 2017 at 10:31 AM, Rob Berendt <rob@xxxxxxxxx> wrote:

Again: "alternate IPL device" vs "alternate installation device".
Would that make a difference?

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: DrFranken <midrange@xxxxxxxxxxxx>
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxx>,
Rob Berendt <rob@xxxxxxxxx>
Date: 12/20/2017 11:47 AM
Subject: Re: Migrating extant system to new hardware
Sent by: "MIDRANGE-L" <midrange-l-bounces@xxxxxxxxxxxx>

I have never hit a limit of virtual optical total capacity of the
image catalog and I have migrated multi-TB systems this way.

The biggest thing is having enough disk space.

The second is enough network to push it all.

The third is a place to boot the new system from whether that is an
image catalog on VIOS, a network based catalog on the existing system,
or a physical disk. DO NOTE I have seen in this thread references to
'far far away' and if you are trying to IPL from the network to
install IBM i LIC using TFTP/NFS that is across the country that will
with high probability fail across a WAN. It IS sensitive to latency. I
do it across the state of MI but that's on dedicated private fiber
with 4ms latency, It sometimes fails over the link to my home office
with a 15ms latency. So be warned.

- Larry "DrFranken" Bolhuis

www.Frankeni.com
www.iDevCloud.com - Personal Development IBM i timeshare service.
www.iInTheCloud.com - Commercial IBM i Cloud Hosting.

On 12/20/2017 11:01 AM, Rob Berendt wrote:

<snip>
I have not researched inherent limit of virtual optical but I do
like

that

idea of backing everything
up and transmitting an image then installing raw from the image.
I've never done that, but it really works?
Again, is there a limit to the size of the virt opt image?
</snip>

It's pretty darn big if there is a limit.
Keep in mind that virtual optical is an "image catalog". Very
important term.
Each "image catalog" has multiple "image catalog entries".
I have one image catalog composed of 6 image catalog entries. Each

entry

is between 1-4GB. This is just the latest PTF cume and groups.
Name Size
CUME_1.bin 4,145,152K
CUME_4.bin 3,801,088K
CUME_5.bin 3,784,704K
CUME_3.bin 3,407,872K
CUME_6.bin 2,048,000K
CUME_2.bin 1,392,640K
I've done OS upgrades with a LOT more entries.

I think there's a limit of 1TB on each image catalog entry.

https://www.ibm.com/support/knowledgecenter/en/ssw_ibm_i_
73/rzamp/rzampother.htm

You might want to verify that for 7.1. Just change the dropdown on
the left.

Rob Berendt

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