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Document Author:	Kathy Walsh		Document ID:	TD102670
Doc. Organization:	Advanced Technical Sales		Document Revised:	04/25/2006
Product(s) covered:	MVS/ESA; OS/390; Parallel Sysplex; S/390; zSeries; z/OS

Abstract: This document was originally introduced as a Flash in 1997, Flash W9731A. The information is still valid and should be reviewed to understand the issues surrounding the use of "hot standby" Coupling Facilities. This document is a total replacement for the earlier flash.

Classification:	Hardware; Software	Category:	Performance
Platform(s):	IBM System z Family	S/W Pillar(s):	IBM System z Software
O/S:	MVS; OS/390; z/OS	Keywords:	ICF, DYNDISP, Coupling Facility, Flash W9731A, W9731A