Information processing system having backup/recovery facilities

Details Information processing system having backup/recovery facilities Information processing system having backup/recovery facilities

1995-02-06

1997-01-21

Beausoliel, Jr., Robert W.

G06F 1100

Patent

active

055967078

ABSTRACT:
An information processing system including a control table, which discriminates whether or not the data selected from a first external storage unit holding a large amount of data has been introduced in the main storage with reference to that control table. The data which has not been introduced in the main storage is transferred from the first external storage unit to the second external storage unit in certain units of volume via the buffer at the time of a backup operation. The data which has been introduced in the main storage is read out from the main storage and converted to the physical format in the first external storage unit and written in the second external storage unit. At the time of a recovery operation, the data is written from the second external storage unit into the first external storage unit in certain units of volume via the buffer, but when it is discriminated by the control table that the data is data which has been introduced in the main storage, this is written at also the corresponding position in the main storage.

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patent: 5212784 (1993-05-01), Sparks
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patent: 5247638 (1993-09-01), O'Brien et al.
patent: 5276860 (1994-01-01), Fortier et al.

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