Quotation from some IBM TechDoc:
"zHPF is supported on FICON Express2 (FEx2) and FICON Express4 (FEx4)
channels. It is not supported on FICON Express channels.
"I/Os executed on path groups with a mix of FICON Express and FICON
Express2 or FICON Express4 channels in the same path group will not be
eligible to convert to zHPF. For zHPF, all the channels in the same
channel path group have to be FEx2 or FEx4. "
The above is clear in scenario with one host and one CU.
What about many-to-many scenarios?
Q1: The following scenario: two host connected to single CU, via switch.
Same channel adapter in CU. One host is zHPF capable, the other is not
(FICON Express "1"). Will zHPF work between CU and first host?
Q2: Another scenario: zHPF-capable host connected via switch to two
different DASD boxes. First DASD is zHPF-capable, the second is not.
Both DASDs are connected to the same CHPIDs.
Will zHPF be used for communication between host and first CU?
Any clue?
Regards
--
Radoslaw Skorupka
Lodz, Poland
--
BRE Bank SA
ul. Senatorska 18
00-950 Warszawa
www.brebank.pl
Sąd Rejonowy dla m. st. Warszawy
XII Wydział Gospodarczy Krajowego Rejestru Sądowego,
nr rejestru przedsiębiorców KRS 0000025237
NIP: 526-021-50-88
Według stanu na dzień 16.07.2010 r. kapitał zakładowy BRE Banku SA (w całości wpłacony) wynosi 168.248.328 złotych.
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