On 20/5/22 10:03, Tom Brennan wrote:
Since z/OSMF is written in java, then why can't that high-CPU work run
on another platform such as Power or x86, and then communicate with
the mainframe for the z/OS work (i.e. submit jobs or whatever it does
to run the actual installation). Or am I thinking too far out of the
box?
It's a good question. In the last couple of years I'm pretty much a full
time Java jockey. Our products run cross-platform and I'm comfortable
with running our stack on distributed systems. Our customers seem to
prefer z/OS as they have full operational control and can run the
servers using JCL which they are familiar with. It comes down to
politics really. I would personally run all our Java stuff on
distributed so the precious mainframe resources (including zIIP) can be
used on the back-end for the system of record. z/OSMF is a different
beast. It's a monolith and the antithesis of a modern micro-services
architecture. It serves both REST APIs and UI's for SMPe, CommsServer
config, workflows, SDSF and it's dodgy ISPF emulator. Some of the APIs
execute native code so it can't be run off-host.
I recently purchased a used Dell PowerEdge x86 rack server on ebay for
$250. It had some damaged USB ports which I refurbed using cheap
replacement parts from Amazon. It has dual socket 16-core (32 with SMT)
processers and 64GB RAM in x4 8GB DIMM sticks. It also has 2TB of disk
but I have an iSCSI SAN. It came with an Emulex HBA but fibre channel is
out of my price range. Plenty of grunt in a cheap setup for doing
analytics and the Linux/Docker work I'm interested in.
On 5/19/2022 6:15 PM, David Crayford wrote:
On 20/5/22 08:23, Andrew Rowley wrote:
Having a zIIP gives you plenty of horsepower for z/OSMF, and having
an IBM z15 gives you System Recovery Boost which gives you…plenty
of horsepower for z/OSMF at least during the first 60 minutes.
(It’s the z/OSMF startup that can take a long time on a low
capacity configuration.
I wouldn't be surprised if once people start using z/OSMF, it's not
just the startup that is slow on a small system. Maybe IBM should
give everyone one zIIP with their z/OS 2.5 license... it might even
be a useful stimulus for smaller z/OS sites.
100% agree. The z/EDC ASIC is now free and on-die on the new
hardware. IBM should do the same with at least 1 zIIP.
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