RE: Disk RAID/mirroring/hot spares, etc

V5R1 was the earliest implementation and did IFS only - essentially for
Domino.

V5R2 added QSYS.LIB support and worked fine, though less objects were
supported than are now - OUTQ's being the most obvious one at the time.

Later releases were much better but it was certainly do-able on V5R2.

I did actually speak to Al by phone about doing this on V5R2 as he was
concerned I might be going down the wrong track, but after we had a
conversation he was OK with what we were doing (!) and the reasons why we
were using IASP's to solve our particular problem.

That was actually the moment the penny dropped for me as to what a generous
guy Al was with his advice and experience - and incidentally also how this
list connects people in a very personal way.

Regards
Evan Harris

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of DrFranken
Sent: Friday, 16 April 2010 4:02 p.m.
To: Midrange Systems Technical Discussion
Subject: Re: Disk RAID/mirroring/hot spares, etc

Seems like V5R2 only supported iASPs for IFS..... but I've slept since
then. Also some bad memories about SAVE 21 not doing the right thing at
V5R2 given the support for iASP was handled by jobs in a subsystem that
went away when (then) OS/400 went into restricted state..... In any case
V5R3 was when they became truly useful although I DO recall Al being
'less than impressed' with the early implementations....

- DrFranken

Very true, V5R2 is when they started. At that time a fellow named Paul
Weyer and I did several iASP pitches at COMMON discussing how they could
be useful. Later Dr. Franken and I did a few sessions as well.(some of
those were really fun, and in Indianapolis we actually created an iASP
during the session using Frankie I) I did not include V5R2 in my
earlier post since it is no longer supported by IBM. You may recall
that Al Barsa was not as impressed with them as he could have been, with
some good reason, however I contended at the time that rather than kill
the concept, it should be allowed to mature just as micro partitioning
and LPAR did.

As each successive OS is released, the feature/function set gets better
and better, as do many of the operational issues associated with iASP.
While the primary use for them in in SAP environments, I like them for
several other uses as well some of which have been discussed today.

Jim Oberholtzer
CEO/Chief Technical Architect
Agile Technology Architects, LLC