Advanced Copy Services comprises the following functions and enhancements. Mirror functions provide a consistent point-in-time copy of data at the recovery. The purpose of this publication is to help you understand and use IBM Advanced; Copy Services functions. It describes three dynamic copy. Abstract for DFSMS Advanced Copy Services. This information supports z/OS® ( ZOS) and contains information about Data Facility Storage Management.
|Published (Last):||21 April 2017|
|PDF File Size:||18.81 Mb|
|ePub File Size:||10.22 Mb|
|Price:||Free* [*Free Regsitration Required]|
Shifting the connectivity usually is not very difficult, because a FICON-switched infrastructure might exist and the required connectivity might already be configured. Thanks to the following people for their contributions to this project: IBM may not offer the products, services, or features discussed in this document in other countries.
Writes to SDM journal data sets on these D volumes. In contrast, GDPS provides a controlling supervisor through its controlling LPAR swhich manage not only the result of a device swap operation but also offers advance Parallel Sysplex server management for planned and unplanned events.
In Figure 9, this system, SY1P. At the same time, volume A is also primary to the zGM session, with volume C as the corresponding zGM secondary volume. The HyperSwap function is made possible through the Metro Mirror relationship. This information contains sample application programs in source language, which illustrate programming techniques on various operating platforms.
Other company, product, aervices service names may be trademarks or service marks of others. IOS performs the actual swap activity. Volume B is the secondary or target volume for volume A.
CONTENTS Table of Contents
Note that SDM might already have suspended its session and stopped reading from disk storage subsystem A. This initial copy might run for several hours, and if any cfsms occurs with the B volumes before the initial copy is completed and with all zGM volume pairs in DUPLEX state, the remote site has consistent source servicez volumes in D to restart. He holds a degree in economics from the University of Heidelberg and in mechanical engineering from FH Heilbronn.
The communication between the channel extenders can be any Telco protocol and does not have to be IP based, as shown in Figure Over the past years, IT service providers, either internal or external to a company, vfsms the capabilities of new developments in disk storage subsystems.
LCM Ludewig Chemische Mittel | Dfsms advanced copy services manuals
IBM has not tested those products and cannot confirm the accuracy of performance, compatibility or any other claims related to non-IBM products. The next operation is a PPRC suspend of the volume pair. Any reference to an IBM product, program, or service is not intended to state or imply that servixes that IBM product, program, or service may be used.
In this configuration, the following differences exist between these two management approaches: Thus, you must create a cooy zGM session and perform a full initial copy between volume A and volume C.
z/OS DFSMS Advanced Copy Services
The distance between the metropolitan sites and the remote site is not limited when replicating volumes through zGM. IBM may have patents or pending patent applications covering subject matter described in this document. Linux is a trademark of Linus Torvalds in the United States, other countries, or both.
All Copy Services functions are handled within the DS firmware. He holds a degree in electrical engineering. All the Metro Mirror volumes have to match all the volumes within the zGM session. We call it Basic because TPC-R does not provide anything beyond a planned swap trigger and avoids the entire swap process once a HyperSwap is triggered in an unplanned fashion. Documents Flashcards Grammar checker. The next step is an SDM internal swap servicces to swap its primary volumes from volume A to volume B.
This action contributes to high availability and even to continuous availability when performing a HyperSwap in a planned fashion for whatever reasons, and there are plenty of reasons. You can send license inquiries, in writing, to: A first step is most likely the HyperSwap operation itself. The journal or D volumes are used by SDM only. The process also includes adding new volumes or triggering a planned HyperSwap. In our example in Figure 4 on page 8, the reverse direction is from device to device The following paragraph does not apply to the United Kingdom or any other country where such provisions are inconsistent with local law: The materials at those Web sites are not part of the materials for this IBM product and use of those Web sites is at your own risk.
As the name implies, it consists of a Metro Mirror relationship and a zGM relationship. Information concerning non-IBM products was obtained from the suppliers of those products, their published announcements or other publicly available sources. High availability requirements have become as important as the need to quickly recover after a disaster affecting a data processing center and its services. All of these names are fictitious and any similarity to the names and addresses used by an actual business enterprise is entirely coincidental.
IOS handles the swap activities and provides some error recovery when the swap cannot successfully finish. IBM may use or distribute any of the information you supply in any way it believes appropriate without incurring any obligation to you. Solutions have evolved from a two-site approach to include a third site, thus transforming the relationship between the primary and secondary site into a high availability configuration.
The numbers in the figure correspond to these steps. This quiescence operation is performed by the user. Because of the way light is reflected, there are two The paper is divided into the following sections: Depending on what happens to the disk storage subsystems in C, an incremental resync to the zGM session can be handled through the hardware bitmaps maintained in the zGM primary disk subsystem for each A volume.