RE: Will mixing 775 SSD and 177 SSD in a 5887 EXP24S I/O drawer be a potential performance issue

Rob:

18.5 hours seems really long for a BRMS recovery. So I'm guessing that
included the time to load LIC and initialize the system, then add the disk
to the ASP? (both of which would have caused the disk units (regardless of
type) to initialize?

So how long was the recovery from loading IBM i to finishing the RSTAUT?
That's more fair comparison of a BRMS recovery to a manual one.

--
Jim Oberholtzer
Chief Technical Architect
Agile Technology Architects

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of
rob@xxxxxxxxx
Sent: Tuesday, December 23, 2014 6:34 AM
To: Midrange Systems Technical Discussion
Subject: RE: Will mixing 775 SSD and 177 SSD in a 5887 EXP24S I/O drawer be
a potential performnace issue

Did an unload/reload of a spinning disk Power 6 based lpar to a SSD guested
Power 8 lpar.
~8 hour save (LTO 4)
Did a BRMS recovery on to the new system.
Pretty much followed the BRMS recovery report to the 'T'.
About an 18.5 hour recovery doing it this way.
I can send you step by step log.

But, really, you have no HA Mimix like system?
We do. And we were swapped over to the other system while we did this.

Good test of system swapping.
Good test of your recovery procedures.

And I've done 11 of these lpars this way. Three of them twice. So, by the
time I did this lpar I had this process pretty much ironed out.


Rob Berendt