McDATA ULTRANET EDGE 3000, User Manual

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McDATA UltraNet Edge 3000 User Guide
Configuring a 1x1 Ethernet Wide Area Network
• Deselect All - Click Deselect All to deselect all checked FICON
Read Write Pipelining interfaces.
• Back - Click Back to return to the previous dialog.
• Next - Click Next to proceed to the next dialog.
• Cancel - Click Cancel to exit the FICON Global Settings Wizard.
• Help - Click Help, or press F1, to see information about this
dialog.
Configure FICON Tape
Read Pipelining
Parameters
Use this dialog to select and enter the Tape Read Pipelining values for
the selected FICON interfaces.
• Set - Check the Set box to enter a value for the parameter
displayed to the right. The value in the corresponding field is
only used if the Set box is checked.
• Enable Tape Read Pipelining - Check this box if Tape Read
Pipelining should be enabled on this interface.
• If a data path is mapped for this interface, UltraNet
ConfigManager ensures that the Tape Read Pipelining option is
also enabled on the peer interface.
• Max Read - In this field, enter the 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.
• Max ECBs - In this field, enter the maximum number of devices
which may be read pipelining on a path. Pipelining does not
increase performance if there are many devices active on one
path, and can actually slow performance if there are too many
active devices. The default value is 8.
• Back - Click Back to return to the previous dialog.
• Next - Click Next to proceed to the next dialog.
• Cancel - Click Cancel to exit the FICON Global Settings Wizard.
• Help - Click Help, or press F1, to view the help information for
the dialog.