Sun Microsystems StorageTek 96257 - Manual (Page 78)

FICON Channel Extension Guidelines
B-78 Sun Confidential: Internal Only 96257
Revision A
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FICON Topologies
See “Placement of Extension Equipment” below to determine proper placement of exten-
sion equipment for the following FICON topologies:
1. Host-to-VTSS (front-end link to VTDs)
a. direct-attach connection
b. single FICON director/switch connection
c. cascaded directors/switches connection
2. VTSS-to-RTD (back-end link to RTDs)
a. direct-attach connection
b. single FICON director/switch connection
c. cascaded directors/switches connection
3. VTSS-to-VTSS (CLINKs)
a. direct-attach connection
b. single FICON director/switch connection
c. cascaded directors/switches connection
4. Host-to-conventional tape drive (no VTSS nor VSM involved)
a. direct-attach connection
b. single FICON director/switch connection
c. cascaded directors/switches connection
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Placement of Extension Equipment
VSM allows many different ways of connecting hosts with VTSS boxes and RTDs, with or
without FICON directors/switches. The number of combinatons and permutations is too
large to list here. Use the sample configurations shown on the following pages as a guide-
line for where to place channel extension equipment.
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Interoperability Testing
Supported directors and configurations for VSM-VTSS systems with channel extensions
are listed in the Interop Tool on the Sun Sales Support website at
https://extranet
.stortek.com/interop/interop .
The Interop Tool provides connectivity information for all currently supported products sold
through Sun, regardless of whether the product is Sun branded or third-party branded.
While the tool does validate compatibility, it does not validate the final configuration, the
system, or whether the configuration will perform in the end user’s environment. Consult
with Sun support personnel to validate all configurations before ordering equipment.