I hardly know anything about it, but about a year ago I watched an IPL
at one of the customers you mentioned. TPF was running on a z15 with
over 30 full-speed CP's. Their support guy mentioned he was concerned
that they may be running more TPF CP's on a single box than anyone else
in the world (bleeding edge). There were no zIIPs on the machine, but
that doesn't necessarily mean TPF can't use them... I just don't know.
I asked the support guy, So what do you do for a local backup, when an
IPL is needed like tonight? Nothing! There is no HA backup other than
DR (local and remote). Why? Because the IPL took maybe 3 minutes
total! I guess there is little reason for sysplex or whatever (if TPF
even supports such things).
This was one LPAR bare metal running a single TPF instance for the
entire company processing. Amazingly fast compared to z/OS. The only
special thing I remember was a feature code that allows TPF to have a
kind of ICC terminal - FC 0034 OSA ICC- 3215 Enablement - whatever a
3215 is I don't know.
On 3/19/2021 5:03 PM, Radoslaw Skorupka wrote:
I know the IBM-MAIN forum is mostly about z/OS, but I wanted to ask
about about z/TPF - it seems to be on topic.
z/TPF
TPF is the system I have never seen.
I'm pretty sure there is no TPF installation in Poland.
However I'm curious about the following:
1. What is typical size of TPF system? I mean MIPS sizing. Is it huge or
rather small?
2. Does TPF typically run in bare LPAR or it is usually run under z/VM,
like z/VSE is?
3. What is the pricing of TPF?
3.1 Is it just single price per system, I mean no paid optional features
like in z/OS?
3.2 Is it expensive? I heard, it is much more expensive, when compared
to z/OS running on the same MIPS base.
4. Any special settings in LPAR definitions? I remember about specia
LPAR mode - ESA/TPF or so. However I don't know any explanation of the
difference.
5. Does it use regular CP's only? Or maybe there are some workloads
applicable to zIIP or even other processors?
6. Does it use SAP processors more extensively than other OSes? I heard
about it.
7. Does exist any z/TPF forum like IBM-MAIN?
8. What are known customers? I'm not asking about company secrets, but I
know (knowledge publicly available) about Citi, Marriott, VISA, BofA,
American Airlines, BA, Sabre, Amadeus and some more. Any other known
notable customers? Banks? ATMs? Reservations? Hotels? Anything else?
Any clue will be appreciated. I have to secret plan, I just want to
learn about it. Just curiosity.
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