Brocade FICON Administrator's Guide v7.1.0 (53-1002753-01, March 2013)

48 FICON Administrator’s Guide
53-1002753-01
FICON emulation overview
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The Advanced FICON Acceleration license contains the following options:
- Capacity 1
- Consumed 1
- Configured Blade Slots 1
This is a slot-based license for the Brocade FX8-24 and 7800.
• Advanced Extension (FTR_AE)
Required for multiple-circuit tunnels, FCIP Trunking, Adaptive Rate Limiting, and other FCIP
features. This is not required for FICON Acceleration features, but multiple circuits would be
used in a FICON emulation environment. This is a slot-based license for the Brocade FX8-24
and 7800.
- Capacity 1
- Consumed 1
- Configured Blade Slots 1
ATTENTION
Use the licenseShow command to verify the licenses are installed on the hardware at both ends of
the FCIP tunnel. For slot-based licenses, use the licenseslotcfg --show command to display all
slot-based licenses in a chassis.
IBM z/OS Global Mirror emulation
The IBM z/OS Global Mirror emulation (formerly eXtended Remote Copy or XRC) application is a
direct-attached storage device (DASD) application that implements asynchronous disk mirroring, as
supported by the disk hardware architecture and a host software component called System Data
Mover (SDM). Within this application, a specific application channel program invokes a
well-constrained type of channel program called a Read Record Set (RRS) channel program. This
channel program is used to read only updates to disk volumes (record sets) after they have been
brought into synchronization with the aim of writing only record updates to a mirrored volume. The
RRS channel program accesses primary volumes from a remote host for the purpose of reading
these record sets (updates) supported by IBM z/OS Global Mirror emulation. The emulation feature
thus allows the primary volume to be located at a distance from its mirrored secondary without
encountering performance degradation associated with IU pacing.