The how do you do VIOS without a SAN is really easy. Don't. Get a SAN.
If you want to use VIOS to virtualize Ethernet and Tape, go for it, however
it's not really meant for IBM i production I/O loads with internal storage.
VIOS will require a dedicated DASD controller to build. It cannot be run as
a client.
With a SAN migration to the new environment is really simple.
Configure SAN/VIOS/Fibre Network to support partitions (medium difficulty)
Add new DASD units from SAN to partitions (basic knowledge)
Leave one drive non-configured (it will be your new load source)
Start removing old DASD units (easy and while system is running and live)
Migrate Load source (that requires downtime to copy the load source drive)
Done.
That would eliminate all the i hosting i and the I/O performance is
significantly better (assuming a properly sized SAN)
This is coming from a guy that swore to never go to external storage only a
few short years ago.
--
Jim Oberholtzer
Agile Technology Architects
-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Rob
Berendt
Sent: Friday, March 16, 2018 1:56 PM
To: midrange-l@xxxxxxxxxxxx
Subject: Power 8 to Power 9 swap out
Think 3 different Power 8's being upgraded to Power 9's.
Somewhat similar configurations.
- Two lpars of VIOS on each redundantly serving up DVD, fiber tape,
Ethernet.
- Each VIOS lpar has their own CEC mirrored pair of disk drives.
- Hosting lpar of IBM i on each
- Four guest lpars of IBM i on each
- lpar of AIX on 2 of the 3.
We may move all disk back to the system ASP. Currently each rack has a
system ASP and one secondary ASP. No iASPs. No SAN (except VTL tape).
I'm wondering how you do the VIOS. I've already forgotten the Power 6 to
Power 8 migration. I don't think we used VIOS on Power 6. That's right, we
had separate ethernet and fc for each lpar.
Is there some sort of magic "dump the vios config to script" or some such
thing?
Also, the sysplan migration?
We're thinking save, rip, replace, etc. We weren't thinking put the New
Power 9 into the rack and just move cables later after getting vios ready.
Maybe stupidity on my part but it would ugly my rack config. Then again, I
could always move it again... Hmm... Get the power 9 fired up. Get VIOS
configed on it. Power it off. Remove from rack, then replace later...
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
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