Planning the Optimum ESCON to FICON Conversion

Table of Contents

Planning the Optimum ESCON to FICON Conversion

Purported benefits of FICON

FICON: a brief overviewWhat is FICON?

Increased data rate with FICON

Effective data transfer rate

Bi-directional data transfer

Bi-directional transfer consequences:

Packet-switched protocol

Packet-switching consequences:

Effect on channel busy

Effect on device response

Effect of channel busy on device response

PPT Slide

How busy should my paths be?

What is my path busy now?

Example of multiple-processor configuration

Example of daisy-chained configuration

Example of typical configuration

How many FICON paths do I need?

ESCON path dead time

Read/write ratio

FICON path busy in the 1:1 swap-out

Sample calculation

Can I live with fewer FICON paths?

Our sample again

Determine response delay from %busy and number of paths

Our sample again

The optimized configuration

Can I combine control units?

But can I further reduce back-end paths?

Rolled-up and optimized

What about FICON express?

Rolled-up, optimized with processor-side express

Conclusion:

Email: tom.aurand@lexonix.com

Home Page: http://www.Lexonix.com

Other information:
Planning the Optimum ESCON to FICON Conversion - May 2003 E-STORM General User's Meeting