Computer system and data loss prevention method
OwnerNaoko Ichikawa, Yuichi Taguchi +3inventors
InventorsNaoko Ichikawa, Yuichi Taguchi, Masayuki Yamamoto, Takashi Watanabe, Miyuki Yasuda
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Abstract
A primary storage system and a secondary storage system are connected via a copy network in this computer system. This computer system includes a measurement unit for measuring an update data input amount to be input into the primary update data storage area, a calculation unit for calculating a recovery point in each given period of time based on the measured update data input amount and the band of the copy network, and a comparison unit for comparing the calculated recovery point and a target recovery point to be pre-set as a target value for recovering the update data.
Claims18
A computer system comprising a primary storage system having a primary update data storage area for temporarily storing update data from a host computer, a secondary storage system for asynchronously storing copy data of said update data in a secondary update data storage area pair-configured with said primary update data storage area, and a management computer for managing said primary storage system or said secondary storage system, wherein said primary storage system and said secondary storage system are connected via a copy network, and said primary storage system and said secondary storage system and said management computer are connected via a management network;
- said computer system further comprises:
- a measurement unit for measuring an update data input amount to be input into said primary update data storage area;
- a calculation unit for calculating a recovery point in each given period of time based on the measured update data input amount and the band of said copy network;
- and
- a comparison unit for comparing the calculated recovery point and a target recovery point to be pre-set as a target value for recovering said update data.
A computer system comprising a primary storage system having a primary update data storage area for temporarily storing update data from a host computer, a secondary storage system for asynchronously storing copy data of said update data in a secondary update data storage area pair-configured with said primary update data storage area, and a management computer for managing said primary storage system or said secondary storage system, wherein said primary storage system and said secondary storage system are connected via a copy network, and said primary storage system and said secondary storage system and said management computer are connected via a management network;
- said computer system further comprises:
- a recovery point calculation unit for calculating, as a recovery point of said update data at an arbitrary time, a coinciding time in which an update data accumulation amount of said update data accumulated in said primary update data storage area at said arbitrary time coincides with the total amount of update data input into said primary update data storage area;
- and
- a recovery point comparison unit for comparing a recovery point calculated in a time-series at designated time intervals with said recovery point calculation unit and a target recovery point pre-set with a target point for recovering said update data.
A data loss prevention method of a computer system comprising a primary storage system having a primary update data storage area for temporarily storing update data from a host computer, a secondary storage system for asynchronously storing copy data of said update data in a secondary update data storage area pair-configured with said primary update data storage area, and a management computer for managing said primary storage system or said secondary storage system;
- wherein said primary storage system and said secondary storage system are connected via a copy network, and said primary storage system and said secondary storage system and said management computer are connected via a management network;
- said data loss prevention method comprises:
- a measurement step for measuring an update data input amount to be input into said primary update data storage area;
- a calculation step for calculating a recovery point in each given period of time based on the measured update data input amount and the band of said copy network;
- and
- a comparison step for comparing the calculated recovery point and a target recovery point to be pre-set as a target value for recovering said update data.
A data loss prevention method of a computer system in which a primary storage system having a primary update data storage area for temporarily storing update data from a host computer, a secondary storage system for asynchronously storing copy data of said update data in a secondary update data storage area pair-configured with said primary update data storage area, and a management computer for managing said primary storage system or said secondary storage system are connected via a network, comprising:
- a recovery point calculation step for calculating, as a recovery point of said update data at an arbitrary time, a coinciding time in which an update data accumulation amount of said update data accumulated in said primary update data storage area at said arbitrary time coincides with the total amount of update data input into said primary update data storage area;
- and
- a recovery point comparison step for comparing a recovery point calculated in a time-series at designated time intervals with said recovery point calculation unit and a target recovery point pre-set with a target point for recovering said update data.
Dependencies are inferred from the claim text.