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Method and System for Eliminating Data Loss During Disaster Fiber Connectivity (FICON) Data / Extended Count Key Data (ECKD).

IP.com Disclosure Number: IPCOM000192620D
Original Publication Date: 2010-Jan-26
Included in the Prior Art Database: 2010-Jan-26
Document File: 2 page(s) / 128K

Publishing Venue

IBM

Abstract

A method and system is disclosed for eliminating data loss during disasters that may occur when using asynchronous data replication technologies for Fiber Connectivity (FICON) data / Extended Count Key data (ECKD).

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Method and System for Eliminating Data Loss During Disaster Fiber Connectivity (FICON) Data / Extended Count Key Data (ECKD).

Disclosed is a method and system for eliminating data loss during disaster that may occur when using asynchronous data replication technologies for Fiber Connectivity (FICON) data / Extended Count Key data (ECKD).

    The method employs a data collector to synchronously store data in a black box. When a disaster occurs, an extended remote copy (XRC) is replicated with the data stored in the black box.

    Fig.1 illustrates an exemplary implementation of the disclosed method for eliminating data loss during disaster for FICON/ECKD data.

Figure 1

    As shown in Fig. 1 a peer-to-peer remote copy (PPRC) session is established between a primary control unit and a secondary control unit. A data collector utilizes a fabric switch feature to intercept PPRC fiber channel and Fiber Channel Protocol (FC/FCP) traffic between the primary control unit and the secondary control unit. Using this, the data collector captures the modification to the data and updates the same in a secondary storage device inside the black box. Therefore, it can be considered that a synchronous copy of the data is maintained the secondary storage data. Also, the secondary control unit asynchronously sends the data to a remote site via a system data mover.

    In case of d...