Data Center Fabric Manager Professional Plus User Manual - Supporting DCFM 10.3.x (53-1001356-01, October 2009)

360 DCFM Professional Plus User Manual

53-1001356-01

Configuring FICON emulation

FICON emulation and acceleration features and operating parameters are configured from the

FICON Emulation tab (Figure 96). Before you configure these features you must decide which

features you want to implement, and you must look closely at the operational parameters to

determine if values other than the default values are better for your installation.

FIGURE 96 FICON Emulation configuration tab

1. Select the check boxes for the FICON emulation features you want to implement.

NOTE

The primary FICON emulation features are XRC emulation, tape write pipelining, and tape read

pipelining. TIN/TUR emulation and device level ACK emulation provide support for the three

primary features. If you select any of the primary features, you must also select TIN/TUR

emulation and device level ACK emulation.

2. Select the operational parameters for FICON emulation.

- FICON Tape Write Max Pipe defines a maximum number of channel commands that may

be outstanding at a given time during write pipelining. Too small of a value will result in

poor performance. The value should be chosen carefully based upon the typical tape

channel program that requires optimum performance. The range is 1-100.

- FICON Tape Read Max Pipe defines a maximum number of channel commands that may

be outstanding at a given time during read pipelining. Too small of a value will result in

poor performance. The value should be chosen carefully based upon the typical tape

channel program that requires optimum performance. The range is 1-100.

- FICON Tape Write Max Ops defines a maximum number of concurrent emulated tape write

operations. The range is 1-32.