HP 1606 FICON Administrator's Guide v6.4.0 (53-1001771-01, June 2010) - Page 19

Cascaded FICON, BC, z9 EC

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FICON configurations 1 Cascaded FICON Cascaded FICON refers to an implementation of FICON that involves one or more FICON channel paths defined over two FICON switches connected to each other using an Inter-Switch Link (ISL). The processor interface is connected to one switch, while the storage interface is connected to the other. This configuration is supported for both disk and tape, with multiple processors, disk subsystems, and tape subsystems sharing the ISLs between the directors. Multiple ISLs between the directors are also supported. Cascading between a director and a switch, for example from a Brocade DCX enterprise-class platform to a Brocade 5100, is also supported. A cascaded configuration requires a list of authorized switches. This authorization feature, called fabric binding, is available through the Secure Access Control List feature. The fabric binding policy allows a predefined list of switches (domains) to exist in the fabric and prevents other switches from joining the fabric. This type of configuration is described in "User security considerations" on page 15. FIGURE 3 Cascaded FICON There are hardware and software requirements specific to cascaded FICON: • The FICON directors themselves must be from the same vendor (that is, both should be from Brocade). • The mainframes must be zSeries machines or System z processors: z800, 890, 900, 990, z9 BC, z9 EC, z10 BC and EC. Cascaded FICON requires 64-bit architecture to support the 2-byte addressing scheme. Cascaded FICON is not supported on 9672 G5/G6 mainframes. • z/OS version 1.4 or later, or z/OS version 1.3 with required PTFs/MCLs to support 2-byte link addressing (DRV3g and MCL (J11206) or later) is required. • The high integrity fabric feature for the FICON switch must be installed on all switches involved in the cascaded architecture. For the Brocade 5000 switch and Brocade 48000 director, this requires Secure Access Control List features. For Brocade M-Series directors or switches, this is known as SANtegrity Binding, and it requires M-EOS firmware version 4.0 or later. FICON Administrator's Guide 7 53-1001771-01

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FICON Administrator’s Guide
7
53-1001771-01
FICON configurations
1
Cascaded FICON
Cascaded FICON refers to an implementation of FICON that involves one or more FICON channel
paths defined over two FICON switches connected to each other using an Inter-Switch Link (ISL).
The processor interface is connected to one switch, while the storage interface is connected to the
other. This configuration is supported for both disk and tape, with multiple processors, disk
subsystems, and tape subsystems sharing the ISLs between the directors. Multiple ISLs between
the directors are also supported. Cascading between a director and a switch, for example from a
Brocade DCX enterprise-class platform to a Brocade 5100, is also supported.
A cascaded configuration requires a list of authorized switches. This authorization feature, called
fabric binding,
is available through the Secure Access Control List
feature
. The fabric binding policy
allows a predefined list of switches (domains) to exist in the fabric and prevents other switches
from joining the fabric. This type of configuration is described in
“User security considerations”
on
page 15.
FIGURE 3
Cascaded FICON
There are hardware and software requirements specific to cascaded FICON:
•
The FICON directors themselves must be from the same vendor (that is, both should be from
Brocade).
•
The mainframes must be zSeries machines or System z processors: z800, 890, 900, 990, z9
BC, z9 EC, z10 BC and EC. Cascaded FICON requires 64-bit architecture to support the 2-byte
addressing scheme. Cascaded FICON is not supported on 9672 G5/G6 mainframes.
•
z/OS version 1.4 or later, or z/OS version 1.3 with required PTFs/MCLs to support 2-byte link
addressing (DRV3g and MCL (J11206) or later) is required.
•
The high integrity fabric feature for the FICON switch must be installed on all switches involved
in the cascaded architecture. For the Brocade 5000 switch and Brocade 48000 director, this
requires Secure Access Control List features. For Brocade M-Series directors or switches, this
is known as SANtegrity Binding, and it requires M-EOS firmware version 4.0 or later.