MVS device backup system for a data processor using a data stora

Details MVS device backup system for a data processor using a data stora MVS device backup system for a data processor using a data stora

1997-04-18

2000-09-12

Cabeca, John W.

Electrical computers and digital processing systems: memory

Storage accessing and control

Control technique

711111, 711112, 711161, G06F 1300, G06F 1200

Patent

active

061192082

ABSTRACT:
The MVS device backup system functions to enable the data processor to manage the device backup function of a disk data storage subsystem in a manner that minimizes the expenditure of data processor resources. This is accomplished by the MVS device backup system determining the source device volume on the data storage subsystem, the target device volume on the data storage subsystem and identifying the extent of both. The MVS device backup system then transmits data to the data storage subsystem, representative of the assignment of DASD full tracks from the source device location on the data storage subsystem as well as DASD full tracks from the target (backup) device location on the data storage subsystem. The data processor based MVS device backup system then uses ECAM channel programs to instruct the data storage subsystem to perform the device backup operation using snapshot track pointer copy operations. Upon conclusion of the device backup operation by the data storage subsystem, the MVS device backup system updates the meta data required to complete the device backup operation.

REFERENCES:
patent: 5212784 (1993-05-01), Sparks
patent: 5255270 (1993-10-01), Yanai et al.
patent: 5276860 (1994-01-01), Fortier et al.
patent: 5630092 (1997-05-01), Carreiro et al.
patent: 5649152 (1997-07-01), Ohran et al.

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