We have a 9406-570 with 9 LPARS and a DS8100 SAN that is replicated to a DR site using PPRC. DS8100 storage is expensive so we have moved the iASP on our development LPARS off the DS8100 to internal 4328 drives. We are keeping the iASP environment for testing purposes. All of our production LPARS will continue to use iASP on the San and replicate to our DR site.
I switched sysbas to the 4328 and now will move the iASP to the 4326 drives since the iASP is more I/O intensive. I could have done a scratch install of sysbas to the 4328 drives but this way was much more interesting; it was also easy once you get the particulars nailed down.
Robert
-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Evan Harris
Sent: Tuesday, March 31, 2009 2:02 PM
To: 'Midrange Systems Technical Discussion'
Subject: IASP - External Storage to Internal Starge was RE: Copy Load Source
Hi Robert
I'm curious about what is behind the decision to move the IASP from external
to internal storage. What are the details of the system and what is the
hardware involved ? What are the factors affecting the decision ? What made
you moved the IASP on to internal disk ?
Regards
Evan Harris
-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Robert Gray
Sent: Wednesday, 1 April 2009 5:12 a.m.
To: Midrange Systems Technical Discussion
Subject: RE: Copy Load Source
I finished the 'copy disk unit data' and everything worked great. One
critical step, and Larry Bolhuis talked about this. IBM technical document
says to physically remove all non-configured disks AND the original LS disk
after power down. Then take the new LS disk (non-configured) and place it in
the same slot as the old LS disk and IPL to DST. Mapping disk slots and
serial numbers, as Pete suggests, really is critical.
Since I am not moving the new LS disk to the old LS slot and I am tagging a
new disk controller as the load source, the old LS disk must remain in the
system until next IPL or you will receive an error at IPL. After the 'copy
disk unit data' completes, disk configuration is unchanged; the new LS
remains non-configured and the old LS remains in the ASP as disk unit 1.
After power down and IPL to DST, the system will automatically perform the
final step; the old LS will be non-configured and the new LS will be in the
ASP as disk unit 1. Then you can power down and physically remove the old LS
disk if desired.
Again, much appreciation to Larry, Chris and Pete for helping me through
this project. Now I can get on will moving my iASP from external storage to
internal storage.
Robert
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