Management Limitations - HP 316095-B21 - StorageWorks Edge Switch 2/24 Planning Manual

Although
physical port numbers and logical port addresses can be extrapolated for the
Director 2/140 (140 ports), Edge Switch 2/12 (12 ports), Edge Switch 2/16
(16 ports), Edge Switch 2/24 (24 ports), and Edge Switch 2/32 (32 ports).

Management Limitations

The following considerations must be given to the limitations and interactions of
director or switch management when using Open Systems management style
(FCP) or FICON management style:
SAN High Availability Planning Guide
Figure 46 depicts a UPM card map only for the Director 2/64,
FICON port-to-port connectivity is hardware enforced, while FCP
port-to-port connectivity is software or hardware enforced (depending on the
director or switch firmware release level).
— FICON architecture controls connectivity through a host-based HCD
program, a director or switch-resident management server called the
control unit port (CUP), and a director or switch-resident prohibit
dynamic connectivity mask (PDCM) array associated with each logical
port address. The CUP and PDCM arrays support hardware enforcement
of connectivity control to all port connections; therefore, when a director
or switch is set to FICON management style, zoning information is
restricted by the hardware instead of by the name server.
— When the director or switch is set to Open Systems management style,
CUP support and the PDCM array are disabled. For FICON devices
attached to the director or switch, the user must manage connectivity to
match logical port addressing established through the host-based HCD
program. For example, if a FICON host expects connectivity through
logical port address 1C, the user must ensure the host is connected to
physical port number 24. Refer to
and logical port address map.
The FCP protocol supports multiple domains (multiswitch fabrics), while the
FICON protocol may or may not be limited to a single domain (single-switch
fabrics), depending on the director or switch firmware release level as
follows:
— For earlier versions of director or switch firmware (prior to version 4.0),
the FICON protocol is limited to a single domain (single-switch fabric)
due to single-byte Fibre Channel link address limitations inherited from
ESCON. Consequently, when a director or switch is set to FICON
management style (FICON compliant), E_Port connections (ISLs) are not
Planning Considerations for Fibre Channel Topologies
Figure 46 for the physical port number
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